ASTM B511/B511M-21

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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: B511/B511M − 16 B511/B511M − 21
Standard Specification for
Nickel-Iron-Chromium-Silicon Alloy Bars and Shapes
This standard is issued under the fixed designation B511/B511M; 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.
1. Scope Scope*
1.1 This specification covers wrought alloys UNS N08330 and UNS N08332 in the form of hot-finished and cold-finished bar
and shapes intended for heat-resisting applications and general corrosive service.
1.2 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 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet
(SDS) for this product/material as provided by the manufacturer, to establish appropriate safety safety, health, and healthenvi-
ronmental practices, and determine the applicability of regulatory limitations prior to use.
1.4 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:
B536 Specification for Nickel-Iron-Chromium-Silicon Alloys Plate, Sheet, and Strip
B880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys
B899 Terminology Relating to Non-ferrous Metals and Alloys
E8 Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E112 Test Methods for Determining Average Grain Size
E1473 Test Methods for Chemical Analysis of Nickel, Cobalt and High-Temperature Alloys
3. Terminology
3.1 The definitions in Terminology B899 are applicable to this specification.
3.2 Definitions of Terms Specific to This Standard:
This specification is under the jurisdiction of ASTM Committee B02 on Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee B02.07 on Refined
Nickel and Cobalt and Their Alloys.
Current edition approved May 1, 2016Nov. 1, 2021. Published May 2016December 2021. Originally approved in 1970. Last previous edition approved in 20092016 as
B511 – 01 (2009).B511/B511M – 16. DOI: 10.1520/B0511_B0511M-16.10.1520/B0511_B0511M-21.
For ASME Boiler and Pressure Vessel Code applications, see related Specification SB-511 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
B511/B511M − 21
3.2.1 bar, n—material round, rectangular, hexagonal, octagonal, or square solid section, furnished in straight lengths.
3.2.2 shapes, n—material of solid section in such forms as angles, channels, tees, I-beams, and four-fluted bars.
4. Ordering Information
4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for the safe and satisfactory performance
of material ordered under this specification. Examples of such requirements include, but are not limited to the following:
4.1.1 Alloy (Table 1),
4.1.2 Quantity (weight or number of pieces),
4.1.3 ASTM designation and year of issue,
4.1.4 Section (round, square, I-beam, etc.),
4.1.5 Dimension, including length,
4.1.6 Certification—State if certification is required.
4.1.7 Samples for Product (Check) Analysis—State whether samples for product (check) analysis shall be furnished.
4.1.8 Purchaser Inspection—If a purchaser wishes to witness tests or inspections of material at the place of manufacture, the
purchase order must so state indicating which tests or inspections are to be witnessed.
5. Materials and Manufacture
5.1 All material shall be furnished in the heat-treated condition, except that cold-drawn hexagons may be given a cold-draw sizing
pass subsequent to the final heat treatment.
NOTE 1—Hot-finished rectangular bar in widths 10 in. [2504 mm] and under may be furnished as hot-finished plate with sheared or cut edges in
accordance with Specification B536.
6. Chemical Composition
6.1 The material shall conform to the requirements as to chemical composition specified in Table 2.
6.2 If a product (check) analysis is performed by the purchaser, the material shall conform to the product (check) analysis
variations in accordance with Specification B880.
7. Mechanical and Other Properties
7.1 The mechanical properties of the material at room temperature shall conform to those shown in Table 1.
TABLE 1 Mechanical Properties
Elongation in
Tensile Yield Strength
2 in. or 50
Alloy Condition Strength, 0.2 % off-set,
mm, or 4D,
min, psi [MPa] min, psi [MPa]
min, %
A
UNS annealed 70 000 [485] 30 000 [210] 30
N08330
UNS annealed 67 000 [465] 27 000 [190] 30
N08332
A
Applies to round bar only. For other bar cross-sections and shapes the minimum
elongation shall be 25 %.
B511/B511M − 21
TABLE 2 Chemical Requirements
Composition
Element
Limits, %
A
C . . .
Mn 2.00 max
P 0.03 max
S 0.03 max
Si 0.75–1.50
Cr 17.0–20.0
Ni 34.0–37.0
Cu 1.00 max
Pb 0.005 max
Sn 0.025 max
B
Fe remainder
A
Alloy UNS N08330: 0.08 max.
Alloy UNS N08332: 0.05–0.10.
Alloy UNS N08332: 0.05–0.10.
B
Element shall be determined arithmetically by difference.
7.2 Grain Size—Annealed alloy UNS N08332 shall conform to an average grain size of ASTM No. 5 or coarser.
7.3 Annealing Temperature—Alloy UNS N08330 shall be annealed at 1900°F [1040°C] minimum. Alloy UNS N08332 shall be
annealed at 2100°F [1150°C] minimum.
8. Dimensions and Permissible Variations
8.1 All bars and shapes shall conform to the permissible variations in dimensions specified in Tables 3-14, inclusive.
9. Workmanship, Finish, and Appearance
9.1 The material shall be uniform in quality and temper, smooth, commercially straight, and free of injurious imperfections.
10. Sampling
10.1 Lot Definition:
10.1.1 A lot for chemical analysis shall consist of one heat.
10.1.2 A lot for mechanical properties and grain size testing shall consist of material from one heat of the same condition and cross
section, and in no case more than 30 000 lb [13 600 kg] in weight.
10.2 Test Material Selection:
10.2.1 Chemical Analysis—Representative samples from each lot shall be taken during pouring or subsequent processing.
10.2.1.1 Product (check) analysis shall be wholly the responsibility of the purchaser.
10.2.2 Mechanical Properties and Grain Size—Samples of the material to provide test specimens for mechanical properties and
grain size shall be taken from such locations in each lot as to be representative of that lot.
11. Number of Tests
11.1 Chemical Analysis—One test per lot.
11.2 Grain Size—One test per lot.
11.3 Mechanical Properties—One test per lot.
B511/B511M − 21
TABLE 3 Permissible Variations in Size of Hot-Rolled Round and Square Bars
NOTE 1—Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same cross section.
NOTE 2—Out-of-square section is the difference in the two dimensions at the same cross section of a square bar, each dimension being the distance
between opposite faces.
1 5 1
NOTE 3—Size tolerances for rounds in the size range from ⁄4 to ⁄16 in. [6.5 to 8.0 mm], incl, and for rounds in the size range from ⁄4 in. [6.5 mm]
to approximate ⁄8 in. [15.5 mm], which are produced on rod mills in coils, are not shown herein.
NOTE 4—Variations in size of coiled product made on rod mills are greater than size tolerances for product made on bar mills.
Size Tolerance
Out-of-Round (Note 1)
Specified Size
or Out-of-Square Section (Note 2)
Over Under
in. [mm] in. [mm] in. [mm] in. [mm]
1 5
⁄4 to ⁄16 [6.5 to 8.0] 0.005 [0.13] 0.005 [0.13] 0.008 [0.20]
5 7
Over ⁄16 to ⁄16 [8.0 to 11.0] 0.006 [0.15] 0.006 [0.15] 0.009 [0.23]
7 5
Over ⁄16 to ⁄8 [11.0 to 15.5] 0.007 [0.18] 0.007 [0.18] 0.010 [0.26]
5 7
Over ⁄8 to ⁄8 [15.5 to 22.0] 0.008 [0.20] 0.008 [0.20] 0.012 [0.30]
Over ⁄8 to 1 [22.0 to 25.0] 0.009 [0.23] 0.009 [0.23] 0.013 [0.34]
Over 1 to 1 ⁄8 [25.0 to 28.0] 0.010 [0.25] 0.010 [0.25] 0.015 [0.38]
1 1
Over 1 ⁄8 to 1 ⁄4 [28.0 to 31.5] 0.011 [0.28] 0.011 [0.28] 0.016 [0.42]
1 3
Over 1 ⁄4 to 1 ⁄8 [31.5 to 34.5] 0.012 [0.30] 0.012 [0.30] 0.018 [0.46]
3 1
Over 1 ⁄8 to 1 ⁄2 [34.5 to 38.0] 0.014 [0.35] 0.014 [0.35] 0.021 [0.53]
1 1 1
Over 1 ⁄2 to 2 [38.0 to 50.0] ⁄64 [0.40] ⁄64 [0.40] 0.023 [0.60]
1 1
Over 2 to 2 ⁄2 [50.0 to 63.0] ⁄32 [0.80] 0 [0] 0.023 [0.60]
1 1 3
Over 2 ⁄2 to 3 ⁄2 [63.0 to 90.0] ⁄64 [1.20] 0 [0] 0.035 [0.90]
1 1 1
Over 3 ⁄2 to 4 ⁄2 [90.0 to 115.0] ⁄16 [1.60] 0 [0] 0.046 [1.20]
1 1 5
Over 4 ⁄2 to 5 ⁄2 [115.0 to 140.0] ⁄64 [2.0] 0 [0] 0.058 [1.50]
1 1 1
Over 5 ⁄2 to 6 ⁄2 [140.0 to 165.0] ⁄8 [3.00] 0 [0] 0.070 [1.80]
1 5
Over 6 ⁄2 to 8 [165.0 to 200.0] ⁄32 [4.00] 0 [0] 0.085 [2.20]
TABLE 4 Permissible Variations in Size of Hot-Rolled Hexagonal and Octagonal Bars
Size Tolerance Maximum Difference
Specified Sizes Measured Between Opposite Sides Measurements for
Over Under
Hexagons Only
in. [mm] in. [mm] in. [mm] in. [mm]
⁄2 to 1, incl [13.0 to 25.0] 0.010 [0.25] 0.010 [0.25] 0.015 [0.38]
Over 1 to 1 ⁄2, incl [25.0 to 38.0] 0.021 [0.53] 0.021 [0.53] 0.025 [0.64]
1 1 1 1
Over 1 ⁄2 to 2, incl [38.0 to 50.0] ⁄32 [0.80] ⁄32 [0.80] ⁄32 [0.80]
1 3 3 3
Over 2 to 2 ⁄2, incl [50.0 to 63.0] ⁄64 [1.20] ⁄64 [1.20] ⁄64 [1.20]
1 1 1 1 1
Over 2 ⁄2 to 3 ⁄2, incl [63.0 to 90.0] ⁄16 [1.60] ⁄16 [1.60] ⁄16 [1.6]
12. Specimen Preparation
12.1 Tension test specimens shall be taken from material in the final condition and tested in the direction of fabrication.
12.1.1 All material shall be tested in full cross-section size when possible. When a full cross-section size test cannot be performed,
the largest possible round specimen shown in Test Methods E8 shall be used. Longitudinal strip specimens shall be prepared in
accordance with Test Methods E8 for rectangular
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