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This specification establishes the requirements for copper-nickel-tin alloy, copper-nickel-zinc alloy (nickel silver), and copper-nickel alloy plate, sheet, strip, and rolled bar.
| Copper Alloy UNS No. | Composition, % | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Copper, incl Silver | Nickel, incl Cobalt | Lead, max | Iron, max | Manganese, max | Zinc | Tin | Chromium | Other Named Elements | ||||||
| C70600 | remainder | 9.0-11.04 | 0.058 | 1.0-1.8 | 1.0 | 1.08 max | … | … | B | |||||
| C70620 | 86.5 min | 9.0-11.0 | 0.02 | 1.0-1.8 | 1.0 | 0.50 max | … | C | ||||||
| C71000 | remainder | 19.0-23.0 | 0.058 | 1.0 max | 1.0 | 1.08 max | … | B | ||||||
| C71500 | remainder | 29.0-33.04 | 0.058 | 0.40-1.0 | 1.0 | 1.08 max | … | … | B | |||||
| C71520 | 65.0 min | 28.0-33.0 | 0.02 | 0.40-1.0 | 1.0 | 0.50 max | … | … | C | |||||
| C72200 | remainder | 15.0-18.0 | 0.058 | 0.50-1.0 | 1.0 | 1.08 | … | 0.30-0.70 | B | |||||
| C72500 | remainder | 8.5-10.5 | 0.05 | 0.6 | 0.2 | 0.5 max | 1.8-2.8 | … | D | |||||
| 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 | … | … | … | |||||
Note :
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.
C : Phosphorus at 0.2 % max, sulfur at 0.02 % max, and carbon at 0.05 % max.
D : Silicon and titanium each at 0.03 % max.
| Temper Designation | Tensile Strength, ksiA [MPaB] | Approximate Rockwell HardnessC,D | ||||
|---|---|---|---|---|---|---|
| Standard | Former | Min | Max | G Scale | B Scale | Superficial 30-T |
| Copper Alloy UNS No. C70600t and C70620 | ||||||
| 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 | 59-6g |
| 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 and C71520 | ||||||
| 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) | 80 (550) | – | 70-90 | 62-75 |
| H04 | hard | 75 [515) | 90 (620) | – | 75-90 | 66–75 |
| H06 | extra hard | 80 [550) | 95 (655) | – | 80-95 | 70-80 |
| H08 | spring | 85 [585) | 100 (690) | – | 85-95 | 72-80 |
| H10 | extra spring | 90 [620) | 105 (725) | – | 87-95 | 76-80 |
| H14 | super spring | 100 [690) | 125 [860) | – | 92 and over | 78 and over |
| Copper Alloy UNS No. C73500 | ||||||
| M20′ | as hot-rolled | 48 [330) | 63 (435) | – | – | – |
| H01 | quarter hard | 56 [385) | 69 (475) | 20-47 | 66-80 | 60-70 |
| H02 | half hard | 63 [435) | 75 (515) | 38-53 | 75-84 | 67-73 |
| H04 | hard | 73 [505) | 84 (580) | 51-61 | 83-88 | 72-75 |
| H06 | extra hard | 79 [545) | 90 (620) | 57-65 | 86-90 | 74-76 |
| Copper Alloy UNS No. C74000 | ||||||
| M20 | as hot-rolled | 48 [330) | 63 (435) | – | – | – |
| H01 | quarter hard | 55 [380) | 70 (485) | – | 60-80 | – |
| H02 | half hard | 63 [435) | 77 (530) | – | 70-85 | – |
| H04 | hard | 73 [505) | 87 (600) | – | 79-91 | – |
| H06 | extra hard | 79 [545) | 91 (625) | – | 83-93 | – |
| Copper Alloy UNS No. C74500 | ||||||
| M20 | as hot-rolled | 48 [330) | 65 (450) | – | – | – |
| H01 | hard | 56 [385) | 73 (505) | – | 51-80 | 50-70 |
| H02 | half hard | 67 [460) | 82 (565) | – | 72-87 | 65-75 |
| H04 | hard | 80 [550) | 94 (650) | – | 85-92 | 73-78 |
| H06 | extra hard | 89 [615) | 102 (700) | – | 90-94 | 7fr79 |
| HOB | spring | 95 [655) | 108 (740) | – | 92-96 | 77-80 |
| Copper Alloy UNS No. C75200 | ||||||
| M20 | as hot-rolled | 52 [355) | 65 (450) | – | – | – |
| H01 | quarter hard | 58 [400) | 72 (495) | – | 50-75 | 49-67 |
| H02 | half hard | 66 [455] | 80 [550] | … | 68-82 | 62-72 |
| H04 | hard | 78 [540] | 91 [625] | 80-90 | 70-76 | |
| H06 | extra hard | 86 [595] | 98 [675] | … | 87-94 | 74-79 |
| H08 | spring | 90 [620] | 101 [700] | 89-96 | 75-80 | |
| Copper Alloy UNS No.C76200 | ||||||
| M20 | as hot-rolled | 55 (380) | 75 (515) | – | – | – |
| H01 | quarter hard | 65 (450) | 81 (560) | – | 61-85 | 57-74 |
| H02 | half hard | 75 (515) | 91 (625) | – | 78-91 | 69-77 |
| H04 | hard | 90 (620) | 105 (720) | – | 90-95 | 7fr79 |
| H06 | extra hard | 99 (685) | 114 (790) | – | 94-9B | 79-81 |
| H08 | spring | 107 (740) | 122 (840) | – | 97-100 | 80 and over |
| Copper Alloy UNS No.C77000 | ||||||
| M20 | as hot-rolled | 60 (415) | 80 (550) | – | – | – |
| H01 | quarter hard | 69 (475) | 87 (600) | 23-62 | 70-88 | 63-75 |
| H02 | half hard | 78 (540) | 95 (655) | 51-69 | 81-92 | 71-78 |
| H04 | hard | 92 (635) | 109 (750) | 67-76 | 90-96 | 76-80 |
| H06 | extra hard | 102 (700) | 117 (810) | 73-80 | 95-99 | 79-82 |
| H08 | spring | 108 (740) | 123 (850) | 77-83 | 97-100 | 80 and over |
Note :
A : ksi = 1000 psi.
B : See Appendix X1.
C : Rockwell hardness values apply as follows: The B and G scale hardness values apply to metal 0.020 in. (0.508 mm) and over in thickness, and the 30-T scale hardness values apply to metal 0.012 in. (0.305 mm) and over in thickness.
D : Standard designation defined in Practice B 601.