ASTM B249/B249M-23

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B249/B249M − 22 B249/B249M − 23
Standard Specification for
General Requirements for Wrought Copper and Copper-
Alloy Rod, Bar, Shapes and Forgings
This standard is issued under the fixed designation B249/B249M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishescovers the general requirements common to wrought copper and copper alloy rod, bar, shapes,
and forgings which shall apply to Specifications B16/B16M, B21/B21M, B98/B98M, B124/B124M, B138/B138M, B139/B139M,
B140/B140M, B150/B150M, B151/B151M, B187/B187M, B196/B196M, B283/B283M, B301/B301M, B371/B371M, B411/
B411M, B441, B453/B453M, B455, B570, B870, B927/B927M, B929, B967/B967M, B974/B974M, and B981/B981M to the
extent referenced therein.
1.2 The chemical composition, physical and mechanical properties, and all other requirements not included in this specification
are prescribed in the product specification.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in
each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
1.3.1 Within the text the SI values are given in brackets.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines
B21/B21M Specification for Naval Brass Rod, Bar, and Shapes
B98/B98M Specification for Copper-Silicon Alloy Rod, Bar and Shapes
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings.
Current edition approved Oct. 1, 2022Oct. 1, 2023. Published October 2022October 2023. Originally approved in 1951. Last previous edition approved in 20202022 as
B249/B249MB249/B249M – 22.–20. DOI: 10.1520/B0249_B0249M-22.10.1520/B0249_B0249M-23.
For ASME Boiler and Pressure Vessel Code applications see related Specifications SB-249 in Section II of that Code.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B249/B249M − 23
B124/B124M Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes
B138/B138M Specification for Manganese Bronze Rod, Bar, and Shapes
B139/B139M Specification for Phosphor Bronze Rod, Bar, and Shapes
B140/B140M Specification for Copper-Zinc-Lead (Red Brass or Hardware Bronze) Rod, Bar, and Shapes
B150/B150M Specification for Aluminum Bronze Rod, Bar, and Shapes
B151/B151M Specification for Copper-Nickel-Zinc Alloy (Nickel Silver) and Copper-Nickel Rod and Bar
B154 Test Method for Mercurous Nitrate Test for Copper Alloys
B187/B187M Specification for Copper, Bus Bar, Rod, and Shapes and General Purpose Rod, Bar, and Shapes
B193 Test Method for Resistivity of Electrical Conductor Materials
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B196/B196M Specification for Copper-Beryllium Alloy Rod and Bar
B283/B283M Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)
B301/B301M Specification for Free-Cutting Copper Rod, Bar, Wire, and Shapes
B371/B371M Specification for Copper-Zinc-Silicon Alloy Rod
B411/B411M Specification for Copper-Nickel-Silicon Alloy Rod and Bar
B441 Specification for Copper-Cobalt-Beryllium Alloy, Copper-Nickel-Beryllium Alloy, Copper-Nickel-Lead-Beryllium Alloy,
and Copper-Nickel-Cobalt Alloy Rod and Bar
B453/B453M Specification for Copper-Zinc-Lead Alloy (Leaded-Brass) Rod, Bar, and Shapes
B455 Specification for Copper-Zinc-Lead Alloy (Leaded-Brass) Extruded Shapes
B570 Specification for Copper-Beryllium Alloy Forgings and Extrusions (UNS Nos. C17000 and C17200)
B577 Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in Copper
B846 Terminology for Copper and Copper Alloys
B858 Test Method for Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in Copper Alloys
B870 Specification for Copper-Beryllium Alloy Forgings and Extrusions (UNS Nos. C17500, C17510, and C17540)
B900 Practice for Packaging of Copper and Copper Alloy Mill Products for U.S. Government Agencies
B927/B927M Specification for Brass Rod, Bar, and Shapes
B929 Specification for Copper-Nickel-Tin Spinodal Alloy Rod and Bar
B967/B967M Specification for Copper-Zinc-Tin-Bismuth Alloy Rod, Bar and Wire
B974/B974M Specification for Free-Cutting Bismuth Brass Rod, Bar and Wire
B981/B981M Specification for Low-Leaded Brass Rod, Bar, Wire, and Shapes
D4855 Practice for Comparing Test Methods (Withdrawn 2008)
E3 Guide for Preparation of Metallographic Specimens
E8/E8M Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry (Withdrawn 2022)
E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)
E75 Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys (Withdrawn 2010)
E76 Test Methods for Chemical Analysis of Nickel-Copper Alloys (Withdrawn 2003)
E112 Test Methods for Determining Average Grain Size
E118 Test Methods for Chemical Analysis of Copper-Chromium Alloys (Withdrawn 2010)
E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys (Withdrawn 2010)
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E290 Test Methods for Bend Testing of Material for Ductility
E478 Test Methods for Chemical Analysis of Copper Alloys
E581 Test Methods for Chemical Analysis of Manganese-Copper Alloys
2.2 ASME Code:
ASME Boiler and Pressure Vessel Code
3. Terminology
3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
3.2 Definitions of Terms Specific to This Standard:
The last approved version of this historical standard is referenced on www.astm.org.
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
B249/B249M − 23
3.2.1 lengths, mill, n—straight lengths, including ends, that can be conveniently manufactured in the mill. Full length Full-length
pieces are usually 10 ft or 12 ft [3000 mm or 3600 mm].10 ft or 12 ft [3000 mm or 3600 mm].
3.2.2 lengths, stock, n—straight lengths that are mill cut and stored in advance of orders. They are usually 10 ft or 12 ft [3000 mm
or 3600 mm] 10 ft or 12 ft [3000 mm or 3600 mm] and subject to established length tolerances.
4. Materials and Manufacture
4.1 Materials:
4.1.1 The material of manufacture shall be a form of the Copper or Copper Alloy UNS No. designation specified in the ordering
information of such purity and soundness as to be suitable for processing into the products described in the product specification.
4.1.2 When specified in the contract or purchase order that heat identification or traceability is required, the purchaser shall specify
the details desired.
NOTE 1—Due to the discontinuous nature of the processing of castings into wrought products, it is not always practical to identify specific casting analysis
with a specific quantity of finished product.
4.2 Manufacture—The product shall be manufactured by such hot-working, cold-working, and annealing processes as to produce
a uniform wrought structure in the finished product.
4.2.1 The product shall be hot- or cold-worked to the finished size and subsequently annealed or heat treated when required, and
straightened to meet the properties specified.
4.2.2 Edges—The edge shall be drawn, extruded, or rolled; refer to Edge Contours in Section 6.
5. Chemical Composition
5.1 The material shall conform to the chemical composition requirements prescribed in the product specification.
5.1.1 Results of analysis on a product (check) sample shall conform to the composition requirements within the permitted
analytical variance given in the product specification.
5.2 The composition limits established for the Copper or Copper Alloy UNS No. designation specified in the product specification
do not preclude the presence of other elements. By agreement between the manufacturer or supplier and the purchaser, limits may
be established and analysis required for unnamed elements.
5.3 When material composition has been determined during the course of manufacture, analysis of the finished product by the
manufacturer is not required.
6. Dimensions, Mass and Permissible Variations
6.1 General—For the purpose of determining conformance with the dimensional requirements, any measured value outside the
specified limiting values for any dimension may be cause for rejection.
6.1.1 The dimensions and tolerances for products referenced to this specification shall be as noted in the following paragraphs and
tables, where the product specification is noted in the table heading.
NOTE 2—Blank spaces in the tolerance tables indicate either that the material generally is not available or that no tolerances are established.
6.2 Diameter or Distance Between Parallel Surfaces—The diameter of round sections or the distance between parallel surfaces
in the case of other sections, except shapes, shall not vary from that specified by more than the amounts specified in Tables 1-12,
included, for the product specification indicated.
B249/B249M − 23
TABLE 1 Tolerances for Diameter or Distance Between Parallel
Surfaces of Cold-Drawn Rod
(Applicable to Specifications B16/B16M, B21/B21M, B98/B98M (Cop-
per Alloy UNS No. C65100), B124/B124M (Copper Alloy UNS Nos.
C11000, C14500, C14700, C46400, C46750, C48200, C48500,
C48640, C48645, C49250, C49255, C49260, C49265, C49300,
C49340, C49345, C49350, and C49360), B140/B140M, B301/B301M,
B453/B453M, B927/B927M, B967/B967M, and B974/B974M)
A
Tolerances, Plus and Minus,
in. [mm]
Diameter or Distance Between
Parallel Surfaces, in. [mm]
Hexagonal,
Round
Octagonal
Up to 0.150 [3.8], incl 0.0013 [0.035] 0.0025 [0.06]
Over 0.150 to 0.500 [3.8 to 12], incl 0.0015 [0.04] 0.003 [0.08]
Over 0.500 to 1.00 [12 to 25], incl 0.002 [0.05] 0.004 [0.10]
Over 1.00 to 2.00 [25 to 50], incl 0.0025 [0.06] 0.005 [0.13]
B B B B
Over 2.00 [50] 0.15 [0.15] 0.30 [0.30]
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified diameter or distance between parallel surfaces expressed to
the nearest 0.001 in. [0.01 mm].
TABLE 2 Tolerances for Diameter or Distance Between Parallel
Surfaces of Cold-Drawn Rod
(Applicable to Specifications B98/B98M (Copper Alloy UNS Nos.
C65500 and C66100), B124/B124M (Copper Alloy UNS Nos. C27450,
C27453, C28500, C36300, C36500, C37000, C37700, C61900,
C62300, C63000, C63200, C64200, C64210, C65500, C65680,
C67500, C67600, C69240, C69300, C69410, C69850, C70620,
C71520, and C77400), B138/B138M, B139/B139M, B150/B150M,
B151/B151M, B196/B196M, B371/B371M, B411/B411M, B441, and
B981/B981M)
A
Tolerances, Plus and Minus,
in. [mm]
Diameter or Distance Between
Parallel Surfaces, in. [mm] Hexagonal,
Round
Octagonal
Up to 0.150 [3.8], incl 0.002 [0.050] . . .
Over 0.150 to 0.500 [3.8 to 12], incl 0.002 [0.050] 0.004 [0.10]
Over 0.500 to 1.00 [12 to 25], incl 0.003 [0.08] 0.005 [0.13]
Over 1.00 to 2.00 [25 to 50], incl 0.004 [0.10] 0.006 [0.15]
B B B B
Over 2.00 [50] 0.20 [0.20] 0.40 [0.40]
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified diameter or distance between parallel surfaces expressed to
the nearest 0.001 in. [0.01 mm].
TABLE 3 Diameter Tolerances for Piston-Finish Rod
(Applicable to Specifications B21/B21M, B138/B138M, B139/B139M,
and B150/B150M)
A
Diameter, in. [mm] Tolerances, Plus and Minus, in. [mm]
Over 0.500 to 1.00 [12 to 25], incl 0.0013 [0.35]
Over 1.00 to 2.00 [25 to 50], incl 0.0015 [0.04]
B B
Over 2.00 [50] 0.10 [0.10]
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified diameter expressed to the nearest 0.0005 in. [0.01 mm].
6.2.1 Table 1 and Table 2—List the tolerances for diameter or distance between parallel surfaces of cold-drawn rod in round,
hexagonal, and octagonal cross sections. Applicable product specifications and alloys are shown in the table titles.
6.2.2 Table 3—Lists the diameter tolerances for piston finish rod applicable to product specifications shown in the table title.
6.2.3 Table 4 and Table 5—List the tolerances for diameter or distance between parallel surfaces of as-extruded rod and bar
applicable to the specifications and alloys shown in the table titles. These tolerances are applicable to round, hexagonal, and
octagonal rod as well as square and rectangular bar.
B249/B249M − 23
TABLE 4 Tolerances for Diameter or Distance Between Parallel
Surfaces of As-Extruded Rod and Bar
(Applicable to Specifications B21/B21M, B124/B124M (Copper Alloy
UNS Nos. C27450, C27453, C28500, C36300, C36500, C37000,
C37700, C46400, C46750, C48200, C48500, C48640, C48645,
C49250, C49255, C49260, C49265, C49300, C49340, C49345,
C49350, C49355, C49360, C61900, C62300, C63000, C63200,
C64200, C64210, C67500, C67600, C69240, C69300, C69410,
C69850, C70620, and C71520), B138/B138M (Copper Alloy UNS
Nos. C67500 and C67600), B150/B150M, B967/B967M, and B981/
B981M)
A
Tolerances, Plus and Minus,
in. [mm]
Diameter or Distance Between
Rod (Round, Hexagonal, and
Parallel Surfaces, in. [mm]
Octagonal) Bar (Rectangular and
Square)
Up to 1.00 [25], incl 0.010 [0.25]
Over 1.00 to 2.00 [25 to 50], incl 0.015 [0.38]
Over 2.00 to 3.00 [50 to 75], incl 0.025 [0.65]
Over 3.00 to 3.50 [75 to 90], incl 0.035 [0.90]
Over 3.50 to 4.00 [90 to 100], incl 0.060 [1.5]
A
When tolerances are specified as all plus or all minus, double the values given.
TABLE 5 Tolerances for Diameter or Distance Between Parallel
Surfaces of As-Extruded Rod and Bar
(Applicable to Specifications B98/B98M, B124/B124M (Copper UNS
Nos. C11000, C14500, C14700 and Copper Alloy UNS Nos. C65500,
C65680, C77400, C87700, and C87710), B138/B138M (Copper UNS
No. C67000), B196/B196M, B441 and B929)
A
Tolerances, Plus and Minus,
in. [mm]
Diameter or Distance Between
Rod (Round, Hexagonal, and
Parallel Surfaces, in. [mm]
Octagonal) Bar (Rectangular and
Square)
Up to 1.00 [25], incl 0.020 [0.50]
Over 1.00 to 2.00 [25 to 50], incl 0.030 [0.75]
Over 2.00 to 3.00 [50 to 75], incl 0.050 [1.3]
Over 3.00 to 3.50 [75 to 90], incl 0.070 [1.8]
Over 3.50 to 4.00 [90 to 100], incl 0.120 [3.0]
A
When tolerances are specified as all plus or all minus, double the values given.
TABLE 6 Diameter Tolerances for Hot-Rolled Round Rod
(Applicable to Specifications B98/B98M, B124/B124M, B138/B138M,
B150/B150M, B196/B196M, and B441)
A
Tolerances, Plus and Minus,
Diameter, in. [mm]
in. [mm]
0.250 [6.35] only +0.020 [+0.50]
−0.010 [−0.25]
Over 0.250 to 0.750 [6.35 to 20], incl 0.015 [0.38]
Over 0.750 to 1.25 [20 to 30], incl 0.020 [0.50]
Over 1.25 to 1.50 [30 to 38], incl 0.030 [0.75]
Over 1.50 to 3.00 [38 to 75], incl ⁄16 [1.6]
Over 3.00 [75] ⁄8 [3.2]
A
When tolerances are specified as all plus or all minus, double the values given.
6.2.4 Table 6—Lists the diameter tolerances for hot-rolled round rod applicable to the product specification shown in the table title.
6.2.5 Table 7, Table 8 and Table 9—List the thickness tolerances for rectangular and square bar applicable to the product
specifications and alloys shown in the table titles.
6.2.6 Table 10 and Table 11—List the width tolerances for rectangular bar applicable to the product specifications and alloys
shown in the table titles.
B249/B249M − 23
TABLE 7 Thickness Tolerances for Rectangular and Square Bar
(Applicable to Specifications B124/B124M, (Copper Alloy UNS Nos. C11000, C14500, and C14700), B301/B301M, and B974/B974M)
A
Thickness Tolerances, Plus and Minus, in. [mm] for Widths Given in Inches
Thickness, in. [mm] 1 1 1
Over ⁄2 to 1 ⁄4 [12 Over 1 ⁄4 to 2 [30 to Over 2 to 4 [50 to Over 4 to 8 [100 to Over 8 to 12 [200 to
⁄2 [12] and Under
to 30] Incl 50] Incl 100] Incl 200] Incl 300] Incl
Over 0.188 to 0.500 [4.8 to 12], incl 0.003 [0.08] 0.003 [0.08] 0.0035 [0.09] 0.004 [0.10] 0.0045 [0.11] 0.0055 [0.13]
Over 0.500 to 1.00 [12 to 25], incl . 0.004 [0.10] 0.004 [0.10] 0.0045 [0.11] 0.005 [0.13] 0.006 [0.15]
Over 1.00 to 2.00 [25 to 50], incl . 0.0045 [0.11] 0.0045 [0.11] 0.005 [0.13] 0.006 [0.15] .
B
Over 2.00 to 4.00 [50 to 100], incl . . . 0.30 . .
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified thickness expressed to the nearest 0.001 in. [0.01 mm].
TABLE 8 Thickness Tolerances for Rectangular and Square Bar
(Applicable to Specifications B16/B16M, B21/B21M, B98/B98M, (Copper Alloy UNS No. 65100), B124/B124M (Copper Alloy UNS Nos. C46400,
C46750, C48200, and C48500), B140/B140M, B453/B453M, B927/B927M, and B967/B967M)
A
Thickness Tolerances, Plus and Minus, in. for Widths Given in Inches
Thickness, in. [mm]
1 1 1 1
⁄2 and Under Over ⁄2 to 1 ⁄4 Incl Over 1 ⁄4 to 2 Incl Over 2 to 4 Incl Over 4 to 8 Incl Over 8 to 12 Incl
Over 0.188 to 0.500 [4.8 to 12], incl 0.0035 [0.09] 0.004 [0.10] 0.0045 [0.11] 0.0045 [0.11] 0.006 [0.13] 0.008 [0.20]
Over 0.500 to 1.00 [12 to 25], incl . 0.0045 [0.11] 0.005 [0.13] 0.005 [0.13] 0.007 [0.18] 0.009 [0.23]
Over 1.00 to 2.00 [25 to 50], incl . 0.005 [0.13] 0.005 [0.13] 0.006 [0.15] 0.008 [0.20] .
B
Over 2.00 to 4.00 [50 to 100], incl . . . 0.30 . .
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified thickness expressed to the nearest 0.001 in. [0.01 mm].
TABLE 9 Thickness Tolerances for Rectangular and Square Bar
(Applicable to Specifications B98/B98M (Copper Alloy UNS Nos. C65500 and C66100), B124/B124M (Copper Alloy UNS Nos. C27450, C27453,
C28500, C36300, C36500, C37000, C37700, C48640, C48645, C65680, C61900, C62300, C63000, C63200, C64200, C64210, C65500,
C67500, C67600, C69240, C69300, C69410, C69850, C70620, C75120, C77400, C87700, and C87710), B138/B138M, B139/B139M, B150/
B150M, B151/B151M, B196/B196M, B411/B411M, B441, B929, and B981/B981M)
A
Thickness Tolerances, Plus and Minus, in. [mm] for Widths Given in Inches
Thickness, in. [mm] 1 1 1
Over ⁄2 to 1 ⁄4 [12 Over 1 ⁄4 to 2 [30 to Over 2 to 4 [50 to Over 4 to 8 [100 to Over 8 to 12 [200 to
⁄2 [12] and Under
to 30] Incl 50] Incl 100] Incl 200] Incl 300] Incl
Over 0.188 to 0.500 [4.8 to 12], incl 0.005 [0.13] 0.005 [0.13] 0.006 [0.15] 0.007 [0.18] 0.009 [0.23] 0.012 [0.30]
Over 0.500 to 1.00 [12 to 25], incl . 0.006 [0.15] 0.007 [0.18] 0.008 [0.20] 0.010 [0.25] 0.013 [0.33]
Over 1.00 to 2.00 [25 to 50], incl . 0.006 [0.15] 0.007 [0.18] 0.009 [0.23] 0.011 [0.28] .
B
Over 2.00 to 4.00 [50 to 100], incl . . . 0.50 . .
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified thickness expressed to the nearest 0.001 in. [0.1 mm].
TABLE 10 Width Tolerances for Rectangular Bar
(Applicable to Specifications B16/B16M, B21/B21M, B98/B98M (Cop-
per Alloy UNS No. C65100), B124/B124M (Copper Alloy UNS Nos.
C11000, C14500, C14700, C46400, C46750, C48200, and C48500),
B140/B140M, B301/B301M, B453/B453M, B927/B927M, B967/B967M
and B974/B974M)
A
Width, in. [mm] Tolerances, Plus and Minus, in. [mm]
Over 0.188 to 0.500 [4.8 to 12], 0.0035 [0.09]
incl
Over 0.500 to 1.25 [12 to 30], incl 0.005 [0.13]
Over 1.25 to 2.00 [30 to 50], incl 0.008 [0.20]
B
Over 2.00 to 4.00 [50 to 100], incl 0.012 [0.30]
B
Over 4.00 to 12.00 [100 to 300], 0.30 [0.30]
incl
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified width expressed to the nearest 0.001 in. [0.01 mm].
6.2.7 Table 12—Lists the diameter or distance between parallel surfaces tolerances for hot-forged rod and bar applicable to the
product specification shown in the title.
6.3 Length—Rod, bar, and shapes shall be furnished in stock lengths with ends, unless the order specifies stock lengths, specific
lengths, or specific lengths with ends as specified in Table 13, Table 14, and Table 15 for the product specification indicated.
B249/B249M − 23
TABLE 11 Width Tolerances for Rectangular Bar
(Applicable to Specifications B98/B98M (Copper Alloy UNS Nos.
C65500 and C66100), B124/B124M (Copper Alloy UNS Nos. C27450,
C27453, C28500, C36300, C36500, C37000, C37700, C48640,
C48645, C65680, C61900, C62300, C63000, C63200, C64200,
C64210, C65500, C67500, C67600, C69240, C69300, C69410,
C69850, C70620, C75120, C77400, C87700, and C87710), B138/
B138M, B139/B139M, B150/B150M, B151/B151M, B196/B196M,
B411/B411M, B441, B929, and B981/B981M)
A
Width, in. [mm] Tolerances, Plus and Minus, in. [mm]
Over 0.188 to 0.500 [4.8 to 12], incl 0.005 [0.13]
Over 0.500 to 1.25 [12 to 30], incl 0.007 [0.18]
Over 1.25 to 2.00 [30 to 50], incl 0.010 [0.25]
Over 2.00 to 4.00 [50 to 100], incl 0.015 [0.38]
B B
Over 4.00 to 12.00 [100 to 300], incl 0.50 [0.50]
A
When tolerances are specified as all plus or all minus, double the values given.
B
Percent of specified width expressed to the nearest 0.001 in. [0.01 mm].
TABLE 12 Diameter Tolerances for Hot-Forged Rod and Bar
(Applicable to Specification B138/B138M)
Diameter or Distance Between Tolerances, All Plus, in. [mm]
Parallel Surfaces, in. [mm] As-Forged Rough-Turned
Over 3.50 [90] 0.125 [3.2] 0.050 [1.3]
TABLE 13 Length Tolerances for Rod, Bar, and Shapes (Full-
Length Pieces Specific and Stock Lengths With or Without Ends)
(Applicable to Specifications B16/B16M, B21/B21M, B98/B98M, B138/
B138M, B139/B139M, B140/B140M, B150/B150M, B151/B151M,
B196/B196M, B301/B301M, B371/B371M, B411/B411M, B441, B453/
B453M, B927/B927M, B929, B967/B967M, B974/B974M, and B981/
B981M)
NOTE 1—The length tolerances in this table are all plus; if all minus
tolerances are desired, use the same values; if tolerances are desired plus
and minus, halve the values given.
Tolerances, All Plus, in. [mm]
Length Classification (Applicable Only to
Full-Length Pieces)
Specific lengths ⁄8 [10]
Specific lengths with ends 1 [25]
A A
Stock lengths with or without ends 1 [25]
A
As stock lengths are cut and placed in stock in advance of orders, departure from
this tolerance is not practicable.
6.3.1 Table 13—Length tolerances for full-length pieces applicable to product specifications shown in the table title.
6.3.2 Table 14 and Table 15—Lists the schedule of lengths (specific and stock) with ends applicable to product specifications and
alloys shown in the table titles.
6.4 Straightness:
6.4.1 Unless otherwise specified, drawn rod, bar, and shapes, other than shafting rod, piston-finish rod shall be furnished in straight
lengths. The deviation from straightness shall not exceed the limitations specified in Table 16 for either general or automatic screw
machine use for the product specifications and alloys shown in the table titles. To determine compliance with this tolerance, the
lengths shall, in case of disagreement, be checked by the following method:
6.4.1.1 Place the lengths on a level table so that the arc or departure from straightness is horizontal. Measure the depth of arc to
the nearest ⁄32 in. [1.0 mm], using a steel scale and a straightedge. Local departure from straightness should be measured with a
1 ft [300 mm] straightedge and a feeler gage.
B249/B249M − 23
TABLE 14 Schedule of Lengths (Specific and Stock) with Ends for Rod, Bar, and Shapes
(Applicable to Specifications B16/B16M, B21/B21M, B138/B138M (Copper Alloy UNS Nos. C67500 and C67600), B140/B140M, B301/B301M,
B453/B453M, B927/B927M, and B974/B974M)
Diameter or Distance Between Parallel Maximum Permissible
Shortest Permissible
Nominal Length,
A 2 2 B
Surfaces for Round, Hexagonal, and Rectangular Bar, Area, in. [mm ] Weight of Ends, % of
Length, % of
ft [mm]
Nominal Length
Octagonal Rod, and Square Bar, in. [mm] Lot Weight
0.500 [12] and under 0.250 [160] and under 6 to 14 [2000 to 4250], incl 75 20
Over 0.500 to 1.00 [12 to 25], incl over 0.250 to 1.00 [160 to 650], incl 6 to 14 [2000 to 4250], incl 70 30
Over 1.00 to 1.50 [25 to 38], incl over 1.00 to 2.25 [650 to 1500], incl 6 to 12 [2000 to 3750], incl 60 40
Over 1.50 to 2.00 [38 to 50], incl over 2.25 to 4.00 [1500 to 2500], incl 6 to 12 [2000 to 3750], incl 50 45
Over 2.00 to 3.00 [50 to 75], incl over 4.00 to 9.00 [2500 to 5850], incl 6 to 10 [2000 to 3000], incl 40 50
A
Width times thickness, disregarding any rounded corners or edges.
B
Expressed to the nearest ⁄2 ft [150 mm].
TABLE 15 Schedule of Lengths (Specific and Stock) with Ends for Rod, Bar, and Shapes
(Applicable to Specifications B98/B98M, B138/B138M (Copper Alloy UNS No. C67000), B139/B139M, B150/B150M, B151/B151M, B196/B196M,
B371/B371M, B411/B411M, B441, B929, B967/B967M, and B981/B981M)
Diameter or Distance Between Parallel Maximum Permissible
Shortest Permissible
A 2 2
B
Surfaces for Round, Hexagonal, and Rectangular Bar, Area, in. [mm ] Nominal Length, ft [mm] Weight of Ends, % of
Length, % of
Octagonal Rod, and Square Bar, in. [mm] Nominal Length Lot Weight
0.500 [12] and under 0.250 [160] and under 6 to 12 [2000 to 4000], incl 65 30
Over 0.500 to 1.00 [12 to 25], incl over 0.250 to 1.00 [160 to 650], incl 6 to 12 [2000 to 4000], incl 60 40
Over 1.00 to 1.50 [25 to 38], incl over 1.00 to 2.25 [650 to 1500], incl 6 to 10 [2000 to 3000], incl 50 50
Over 1.50 to 2.00 [38 to 50], incl over 2.25 to 4.00 [1500 to 2500], incl 6 to 10 [2000 to 3000], incl 40 60
A
Width times thickness, disregarding any rounded corners or edges.
B
Expressed to the nearest ⁄2 ft [150 mm].
TABLE 16 Straightness Tolerances for Rod, Bar, and Shapes
Form and Size, Maximum Curvature
Length, ft [mm]
in. [mm] (Depth of Arc), in. [mm]
FOR GENERAL USE
(Applicable to Specifications B16/B16M, B21/B21M, B98/B98M, B138/B138M,
B139/B139M, B140/B140M, B150/B150M, B151/B151M, B196/B196M, B301/
B301M, B371/B371M, B411/B411M, B441, B453/B453M, B927/B927M, B929,
B967/B967M, B974/B974M, and B981/B981M)
Rod: drawn up to 2 [600] ⁄32 [0.80]
incl 2 to 5 [600 to 1500] ⁄32 in any 2 ft portion [0.80 in
A
any 600 mm portion]
incl 5 to 10 [1500 to 3000] ⁄8 in any 5 ft portion [3.0 in
A
any 1500 mm portion]
10 [3000] and over ⁄2 in any 10 ft portion [12 in
A
any 3000 mm portion]
Bar and shapes 6 [2000] and over ⁄2 in any 6 ft portion [12 in
A,B
(rolled or drawn) any 2000 mm portion]
DRAWN ROD—FOR AUTOMATIC SCREW MACHINE USE
(Applicable to Specifications B16/B16M,B140/B140M,B301/B301M, B453/
B453M, B974/B974M, and B981/B981M)
Round only:
1 1
Under ⁄4 [6.35] 10 [3000] and over ⁄2 in any 10 ft portion [12 in
A
any 3000 mm portion]
1 1
⁄4 [6.35] and over 10 [3000] and over ⁄4 in any 10 ft portion [6.35
A
in any 3000 mm portion]
Local departure from . ⁄64 in any 1 ft portion of
straightness, ⁄4 the total length [0.40 in any
[6.35] and 300 mm portion of the total
over only length]
Hexagonal and
octagonal:
1 1
Under ⁄4 [6.35] 10 [3000] and over ⁄2 in any 10 ft portion [12.7
A
in any 3000 mm portion]
1 3
⁄4 [6.35] and over 10 [3000] and over ⁄8 in any 10 ft portion [9.5 in
A
any 3000 mm portion]
A
Of total length.
B
Applicable to any longitudinal surface or edge.
6.4.2 Shafting rod, when so specified, shall comply with the tolerances of Table 17 for the product specifications shown in the table
title. To determine compliance with this paragraph, shafting shall, in case of disagreement, be checked by the following method:
B249/B249M − 23
TABLE 17 Straightness Tolerances for Shafting
(Applicable to Specifications B21/B21M, B138/B138M, B139/B139M,
and B150/B150M)
Maximum Permissible
Minimum Diameter
Departure from Straightness
Length of Shaft, ft [mm] Applicable for Length
of Either Center or End
Indicated, in. [mm]
Portions, in. [mm]
Up to 6 [2000], incl 0.005 [0.13] ⁄2 [12]
7 [1750] 0.007 [0.18] ⁄2 [12]
8 [2400] 0.009 [0.23] ⁄2 [12]
9 [2750] 0.012 [0.30] ⁄2 [12]
10 [3050] 0.014 [0.36] ⁄2 [12]
11 [3350] 0.017 [0.43] ⁄2 [12]
12 [3650] 0.020 [0.50] ⁄2 [12]
14 [4250] 0.028 [0.63] ⁄8 [16]
16 [4875] 0.036 [0.91] ⁄4 [20]
18 [5500] 0.045 [1.14] 1 [25]
20 [6100] 0.055 [1.4] 1 ⁄4 [30]
22 [6700] 0.068 [1.73] 1 ⁄2 [40]
24 [7300] 0.078 [2.00] 1 ⁄4 [44]
26 [7900] 0.094 [2.38] 2 [50]
6.4.2.1 Place the shaft upon two freely rotating supports, one fourth of the shaft length extending beyond each support. Measure
the departure from straightness at each end and at the center by means of a dial gage mounted on a suitable movable block and
set successively at the three points to be measured while rotating the shaft slowly and carefully to avoid vibration. The total range
of the dial reading at a given point, divided by two, gives the departure from straightness at that point.
6.5 Edge Contours:
6.5.1 Finish—All rectangular and square bar shall have finished edges.
6.5.2 Angles—All regular polygonal sections shall have substantially exact angles. For hexagonal and octagonal rods cold-drawn
1 3
to size, corner radii shall not exceed ⁄16 in. [1.5 mm] for sizes up to 2 in. [50 mm], incl., and ⁄32 in. [2.5 mm] for sizes over 2
in. [50 mm].
6.5.2.1 When specified, hexagons and octagons shall be furnished with corners rounded to a radius of 11 % of the distance
between parallel faces. The distance from corner to corner (see Note 3) shall be the basis for acceptance or rejection. The
appropriate tolerances are listed in Table 18.
NOTE 3—The distance from corner to corner is determined by calculating the distance across parallel faces times 1.121 for hexagons and 1.064 for
octagons.
6.5.3 Rectangular and Square Bar—Unless otherwise specified, square corners shall be furnished on rectangular and square bar.
When so ordered, the edge contours described in 6.5.4 – 6.5.7 inclusive shall be furnished.
6.5.4 Square Corners—Unless otherwise specified, bar shall be finished with commercially square corners with a maximum
1 3
permissible radius of ⁄32 in. [1.0 mm] for bars over ⁄16 to 1 in. [5 to 25 mm], in. to 1 in. [5 mm to 25 mm], inclusive, in thickness,
and ⁄16 in. in. [1.5 mm] for bars over 1 in. [25 mm] in thickness.
6.5.5 Rounded Corners—When specified, bar shall be finished with corners rounded as shown in Fig. 1 to a quarter circle with
1 3 1
a radius of ⁄16 in. [1.5 mm] for bars over ⁄16 in. to 1 in. [25 mm], inclusive, in thickness, and ⁄8 in. [5 mm] for bars over 1 in.
[25 mm] in thickness. The tolerance on the radius shall be 625 %.
TABLE 18 Tolerances for Rounded Corne
...