ASTM B122/B122M-95

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Designation: B 122/B122M – 95
Standard Specification for
Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy
(Nickel Silver), and Copper-Nickel Alloy Plate, Sheet,
Strip, and Rolled Bar
This standard is issued under the fixed designation B 122/B122M; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2. Referenced Documents
1.1 This specification covers copper-nickel-tin alloy, 2.1 The following documents of the issue in effect on date
copper-nickel-zinc alloy (nickel silver), and copper-nickel of material purchase form a part of this specification to the
alloy plate, sheet, strip, and rolled bar. The following alloys are extent referenced herein:
covered: 2.2 ASTM Standards:
B 171 Specification for Copper-Alloy Plate and Sheet for
Previously
Copper Alloy Used Nominal Composition,
Pressure Vessels, Condensers, and Heat Exchangers
UNS No. Designation %
B 248 Specification for General Requirements for Wrought
Chro-
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
Copper Nickel Zinc Tin mium
Bar
C70600 . 90 10 . . .
B 601 Practice for Temper Designations for Copper and
C71000 6 80 20 . . .
C71500 5 70 30 . . . Copper Alloys—Wrought and Cast
C72200 . 85 15 . . 0.5
E 527 Practice for Numbering Metals and Alloys (UNS)
C72500 . 89 9 . 2 .
C73500 1 72 18 10 . .
3. Ordering Information
C74000 9 70 10 20 . .
C74500 3 65 10 24 . .
3.1 Orders for material under this specification should
C75200 2 65 18 17 . .
include the following information:
C76200 8 59 12 29 . .
3.1.1 Alloy number (Section 1),
C77000 4 55 18 27 . .
3.1.1.1 Whether the alloy ordered will be used in applica-
NOTE 1—Plates of copper-nickel alloy Copper Alloy UNS Nos.
tions requiring it to be welded (see Table 1, Footnote B),
C70600, C71500, and C72200 for use as tube plates in surface condensers
3.1.2 Temper (Section 5),
and heat exchangers are covered by Specification B 171.
3.1.3 Dimensions: thickness and width (see 9.2 and 9.3),
1.2 The values stated in either inch-pound units of SI units
3.1.4 Type of edge, if required: slit, sheared, sawed, square
are to be regarded separately as standard. Within the text, the
corners, rounded corners, rounded edges, or full rounded edges
SI units are shown in brackets. The values stated in each
(see 9.6),
system are not exact equivalents; therefore, each system shall
3.1.5 How furnished: flat or rolls,
be used in independently of the other. Combining values from
3.1.6 Length (see 9.4), and
the two systems may result in nonconformance with the
3.1.7 Weight: total for each size.
specification.
3.1.8 ASTM Specification B 122/B 122M, year of issue.
1.2.1 When the product is ordered in inch-pound units, the
3.2 In addition, when material is purchased for agencies of
inch-pound units are to be regarded as the standard except
the U.S. Government, it shall conform to the Supplementary
grain size is always specified in millimeters.
Requirements as defined in Specification B 248 when specified
1.2.2 When the product is ordered in SI units, the SI units
in the contract or purchase order.
are to be regarded as the standard.
4. Chemical Composition
This specification is under the jurisdiction of ASTM Committee B05 on Copper
4.1 The material shall conform to the chemical composition
and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,
prescribed in Table 1.
Sheet, and Strip.
Current edition approved Nov. 10, 1995. Published January 1996. Originally
4.2 These specification limits do not preclude the presence
published as B 122 – 39 T. Last previous edition B 122 – 92a.
of other elements. Limits may be established for unnamed
The UNS system for copper and copper alloys (see Practice E 527) is a simple
expansion of the former standard designation system accomplished by the addition
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate Annual Book of ASTM Standards, Vol 02.01.
composition variations of the base alloy. Annual Book of ASTM Standards, Vol 01.01.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
B 122/B122M
TABLE 1 Chemical Requirements
Composition, %
Copper
Copper, Nickel, Other
Alloy
Lead, Iron, Manganese, Chro-
incl incl Zinc Tin Named
UNS No.
max max max mium
Silver Cobalt Elements
A B B B
C70600 remainder 9.0–11.0 0.05 1.0–1.8 1.0 1.0 max . .
B B B
C71000 remainder 19.0–23.0 0.05 1.0 max 1.0 1.0 max . .
A B B B
C71500 remainder 29.0–33.0 0.05 0.40–1.0 1.0 1.0 max . .
B B B
C72200 remainder 15.0–18.0 0.05 0.50–1.0 1.0 1.0 . 0.30–0.70
C72500 remainder 8.5–10.5 0.05 0.6 0.2 0.5 max 1.8–2.8 . .
C73500 70.5–73.5 16.5–19.5 0.10 0.25 max 0.50 remainder . . .
C74000 69.0–73.5 9.0–11.0 0.10 0.25 max 0.50 remainder . . .
C74500 63.5–66.5 9.0–11.0 0.10 0.25 max 0.50 remainder . . .
C75200 63.5–66.5 16.5–19.5 0.05 0.25 max 0.50 remainder . . .
C76200 57.0–61.0 11.0–13.5 0.10 0.25 max 0.50 remainder . . .
C77000 53.5–56.5 16.5–19.5 0.05 0.25 max 0.50 remainder . . .
A
Copper plus elements with specific limits, 99.5 % min.
B
When the product is for subsequent welding applications and so specified by the purchaser, zinc shall be 0.50 % max, lead 0.02 % max, phosphorus 0.02 % max, sulfur
0.02 % max, and carbon 0.05 % max.
elements by agreement between manufacturer or supplier and sheet and plate produced by hot rolling and is as designated in
purchaser.
Table 2.
4.2.1 For copper alloys for which copper is specified as a
5.2 Rolled (H) Material—The standard tempers of rolled
remainder, copper may be taken as the difference between the
material are as designated in Table 2 with the prefix “H.”
sum of all the elements analyzed and 100 %. When all the
Former designations and the standard designations as defined
elements in Table 1 are analyzed, their sum shall be as follows:
in Practice B 601 are shown. Special or nonstandard tempers
Copper plus Named Ele-
are subject to negotiation between manufacturer and purchaser
Copper Alloy UNS No. ments, % min
(See 3.1.2).
C70600 99.5
5.3 Annealed—The standard temper is O60 (soft), as indi-
C71000 99.5
cated in Table 2.
C71500 99.5
C72200 99.5
C72500 99.8
6. Mechanical Properties of Rolled Tempers
4.2.2 For copper alloys for which zinc is specified as a
6.1 Tensile Strength:
remainder, either copper or zinc may be taken as the difference
6.1.1 Products ordered to this specification in inch-pound
between the sum of all elements analyzed and 100 %. When all
units shall conform to the tensile strength requirements pre-
elements in Table 1 are analyzed, their sum shall be as follows:
scribed in ksi units in Table 2.
Copper plus Named Ele-
6.1.2 Products ordered to this specification in SI units shall
Copper Alloy UNS No. ments, % min
conform to the tensile strength requirements prescribed in MPa
C73500 99.5
units [bracketed] in Table 2.
C74000 99.5
C74500 99.5
6.1.3 Acceptance or rejection based on mechanical proper-
C75200 99.5
ties shall depend only on the tensile strength.
C76200 99.5
C77000 99.5
6.1.4 The tension test specimens shall be taken so the
longitudinal axis of the specimen is parallel to the direction of
5. Temper
rolling.
5.1 As Hot-Rolled (M20) Material—The standard temper of
B 122/B122M
TABLE 2 Tensile Strength Requirements and Approximate Rockwell Hardness Values for Rolled Tempers
NOTE 1—Plate is generally available in only the as hot–rolled (M20) tempers. Required properties for other tempers shall be agreed upon between
manufacturer and purchaser at the time of placing the order.
A
Tensile Strength, ksi
C,D
Temper Designation Approximate Rockwell Hardness
B
(MPa )
Superficial
Standard Former Min Max G Scale B Scale
30-T
Copper Alloy UNS No. C70600†
M20 as hot-rolled 40 [275] 62 [425] . . .
H01 quarter hard 51 [350] 67 [460] . 51–78 52–70
H02 half hard 58 [400] 72 [495] . 66–81 61–72
H04 hard 71 [490] 83 [570] . 76–86 67–74
H06 extra hard 73 [505] 85 [585] . 80–88 71–77
H08 spring 78 [540] 88 [605] . 83–91 72–78
Copper Alloy UNS No. C71000
M20 as hot-rolled 38 [260] 56 [385] . . .
H01 quarter hard 47 [325] 63 [435] . 45–72 46–65
H02 half hard 56 [385] 70 [485] . 64–78 59–69
H04 hard 67 [460] 79 [545] . 76–84 67–73
H06 extra hard 72 [495] 84 [580] . 79–87 69–75
H08 spring 76 [525] 87 [600] . 82–88 71–75
Copper Alloy UNS No. C71500
M20 as hot-rolled 45 [310] 65 [450] . . .
H01 quarter hard 58 [400] 72 [495] . 67–81 61–71
H02 half hard 66 [455] 80 [550] . 76–85 67–74
H04 hard 75 [515] 88 [605] . 83–89 72–76
H06 extra hard 80 [550] 92 [635] . 85–91 73–77
H08 spring 84 [580] 94 [650] . 87–91 74–77
Copper Alloy UNS No. C72200
M20 as hot-rolled 42 [290] 62 [425] . . .
H01 quarter hard 55 [380] 67 [460] . 63–78 58–70
H02 half hard 58 [400] 72 [495] . 66–85 61–73
H04 hard 71 [490] 85 [585] . 76–88 67–78
H06 extra hard 73 [505] 90 [620] . 79–90 69–78
H08 spring 78 [540] 91 [625] . 81–91 71–79
Copper Alloy UNS No. C72500
M20 as hot-rolled 50 [345] 70 [485] . . .
H01 quarter hard 55 [380] 75 [515] . Up to 85 Up to 72
H02 half hard 65 [450]
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