Wrought Copper Alloys: Copper Nickels (C70000 - C73499)

Standard Designation for Wrought Copper Alloys

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UNS #	Cu		Pb		Sn		Zn		Fe		Ni		Mn		Other Named Elements		Status
UNS #	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Status
C70100*		Rem⁽¹⁾⁽²⁾						0.25		0.05	3.0⁽³⁾	4.0		0.50			active
C70200*		Rem⁽¹⁾⁽²⁾		0.05						0.10	2.0⁽³⁾	3.0		0.40			active
C70230*		Rem⁽²⁾⁽¹⁾			0.10	0.50	0.50	2.0			2.2	3.2			0.40 Si	0.10 Ag⁽⁴⁾ 0.8 Si	active
C70240*		Rem⁽²⁾⁽¹⁾		0.05			0.30	0.8		0.10	1.0	4.0⁽³⁾	0.01	0.20	0.01 Ag 0.40 Si	0.10 Ag 0.8 Si	active
C70250*		Rem⁽¹⁾⁽²⁾		0.05				1.0		0.20	2.2	4.2⁽³⁾		0.10	0.05 Mg 0.25 Si	0.30 Mg 1.2 Si	active
C70252* Copper Nickel NKC 388		Rem⁽²⁾⁽¹⁾		0.05				1.0		0.20	3.0⁽³⁾	4.2	0.11	0.20	0.05 Mg 0.40 Si	0.30 Mg 1.2 Si	active
C70255		Rem⁽⁵⁾		0.02	0.05	0.50		0.40		0.10	3.0	4.5	0.50	2.0	0.40 Si	0.02 P 1.2 Si 0.20 Cr	active
C70260*		Rem⁽¹⁾⁽²⁾									1.0⁽³⁾	3.0			0.20 Si	0.01 P 0.7 Si	active
C70265*		Rem⁽²⁾⁽¹⁾		0.05	0.05	0.8		0.30			1.0	3.0⁽³⁾			0.20 Si	0.01 P 0.7 Si	active
C70270*		Rem⁽²⁾⁽¹⁾		0.05	0.10	1.0		1.0	0.28	1.0	1.0	3.0⁽³⁾		0.15	0.20 Si	1.0 Si	active
C70275* Copper Nickel Alloy MAX126		Rem⁽¹⁾⁽²⁾		0.01	0.30	1.0	0.30	1.0		0.25	0.50	1.5			0.002 Mg 0.10 Si	0.01 Ca 0.06 Cr 0.20 Mg 0.50 Si	active
C70280*		Rem⁽¹⁾⁽²⁾		0.02	1.0	1.5		0.30		0.015	1.3⁽³⁾	1.7			0.02 P 0.22 Si	0.04 P 0.30 Si	active
C70290*		Rem⁽²⁾⁽¹⁾		0.02	2.1	2.7		0.30		0.015	1.3⁽³⁾	1.7			0.02 P 0.22 Si	0.04 P 0.30 Si	active
C70300* Copper Nickel Alloy		Rem⁽¹⁾								0.05	4.7	5.7		0.05			inactive 07/74
C70310*		Rem⁽¹⁾⁽²⁾		0.05		1.0		2.0		0.10	1.0	4.0⁽³⁾			0.02 Ag 0.08 Si 0.005 Zr	0.05 P 0.50 Ag 0.10 Mg 1.0 Si 0.05 Zr	active
C70315 STOL 94		Rem⁽²⁾		0.05		1.0		2.0		0.10	1.0	4.0			0.08 Si	0.05 P 0.50 Ag 0.20 Mg 1.0 Si	active
C70318		Rem⁽²⁾		0.05				0.50		0.50	2.6	3.4		0.50	0.6 Si 0.8 Co	1.2 Si 1.2 Co 0.20 Cr 0.10 Mg 0.10 Zr	active
C70320 Copper Nickel		Rem⁽¹⁾									2.5⁽³⁾	5.0			0.20 Al 0.18 Cr 0.20 Si	1.2 Al 0.50 Cr 1.2 Si	inactive 03/92
C70330		Rem⁽⁶⁾						0.20			0.50	1.5			0.50 Co 0.05 Cr 0.40 Si	0.20 P 1.5 Co 0.20 Cr 0.8 Si	active
C70340		Rem⁽⁶⁾			0.050.05			0.50			1.5	2.5			0.40 Si 0.20 Co 0.05 Cr	0.30 0.50 P 0.8 Si 0.6 Co 0.15 Cr	active
C70345					0.05	0.30		0.50			2.2	3.5			0.50 Si 0.05 Co 0.05 Cr	Rem ⁽⁶⁾ 0.50 P 1.0 Si 0.45 Co 0.30 Cr	active
C70350*		Rem⁽²⁾		0.05				1.0		0.20	1.0	2.5		0.20	1.0 Co 0.50 Si	2.0 Co 0.15 Mg 1.2 Si	active
C70370*		Rem⁽²⁾⁽¹⁾		0.05				1.0		0.20	1.0	2.0		0.20	0.20 Ag 1.0 Co 0.50 Si	0.70 Ag 2.0 Co 0.04 Mg 1.0 Si	active
C70390		Rem⁽²⁾		0.05				1.0		0.20	2.3	4.6		0.20	0.10 Co 0.6 Si	0.8 Co 0.20 Mg 1.3 Si	active
C70400* Copper-Nickel, 5%		Rem⁽¹⁾⁽²⁾		0.05				1.0	1.3	1.7	4.8⁽³⁾	6.2	0.30	0.8			active
C70440 95/5 Copper-Nickel		Rem⁽¹⁾⁽²⁾		0.05				1.0	1.0	1.8	4.5⁽³⁾	6.0	1.0	1.5	0.35 Si	0.05 C 0.05 S 0.45 Si	inactive 03/92
C70500* Copper-Nickel, 7%		Rem⁽²⁾⁽¹⁾		0.05				0.20		0.10	5.8⁽³⁾	7.8		0.15			active
C70600* Copper-Nickel, 10%		Rem⁽²⁾⁽¹⁾		0.05				1.0	1.0	1.8	9.0	11.0⁽³⁾		1.0			active
C70610*		Rem⁽¹⁾⁽²⁾		0.01					1.0	2.0	10.0⁽³⁾	11.0	0.50	1.0		0.05 C 0.05 S	active
C70620*	86.5⁽¹⁾⁽²⁾			0.02				0.50	1.0	1.8	9.0	11.0⁽³⁾		1.0		0.02 P 0.05 C 0.02 S	active
C70690*		Rem⁽¹⁾⁽⁷⁾⁽²⁾		0.001				0.001		0.005	9.0⁽³⁾	11.0		0.001		0.02 C	active
C70700*		Rem⁽¹⁾⁽²⁾								0.05	9.5	10.5⁽³⁾		0.50			active
C70800* Copper-Nickel, 11%		Rem⁽¹⁾⁽²⁾		0.05				0.20		0.10	10.5⁽³⁾	12.5		0.15			active
C70900* Copper Nickel		Rem⁽¹⁾		0.05				1.0		0.6	13.5⁽³⁾	16.5		0.6			inactive 03/92
C71000* Copper-Nickel, 20%		Rem⁽²⁾⁽¹⁾		0.05				1.0		1.0	19.0⁽³⁾	23.0		1.0			active
C71100*		Rem⁽¹⁾⁽²⁾		0.05				0.20		0.10	22.0⁽³⁾	24.0		0.15			active
C71110* Copper Nickel		Rem⁽¹⁾									21.5⁽³⁾	23.5		0.35		0.008 S 0.05 Ti	inactive 03/92
C71300*		Rem⁽¹⁾⁽²⁾		0.05				1.0		0.20	23.5⁽³⁾	26.5		1.0			active
C71500* Copper-Nickel, 30%		Rem⁽²⁾⁽¹⁾		0.05				1.0	0.40	1.0	29.0	33.0⁽³⁾		1.0			active
C71520*	65.0⁽¹⁾⁽²⁾			0.02				0.50	0.40	1.0	29.0⁽³⁾	33.0		1.0		0.02 P 0.05 C 0.02 S	active
C71580*		Rem⁽⁸⁾⁽¹⁾⁽²⁾		0.05				0.05		0.50	29.0⁽³⁾	33.0		0.30		0.07 C	active
C71581*		Rem⁽⁹⁾⁽²⁾⁽¹⁾		0.02					0.40	0.7	29.0⁽³⁾	32.0		1.0			active
C71590*		Rem⁽⁷⁾⁽¹⁾		0.001		0.001		0.001		0.15	29.0⁽³⁾	31.0		0.50		0.02 C	active
C71600* Copper Nickel Alloy		Rem⁽¹⁾		0.05				1.0	4.8	5.8	29.0⁽³⁾	33.0		1.0			inactive 05/71
C71630* Copper Nickel		Rem⁽¹⁾		0.01					0.40	1.0	30.0⁽³⁾	32.0	0.50	1.5		0.06 C 0.08 S	inactive 03/92
C71640*		Rem⁽²⁾⁽¹⁰⁾⁽¹⁾		0.05⁽¹⁰⁾				1.0⁽¹⁰⁾	1.7	2.3	29.0⁽³⁾	32.0	1.5	2.5		0.06 C 0.03 S	active
C71700*		Rem⁽¹⁾⁽²⁾						1.0	0.40	1.0	29.0⁽³⁾	33.0		1.0	0.30 Be	0.7 Be	active
C71900		Rem⁽¹⁾⁽²⁾		0.015				0.05		0.50	28.0⁽³⁾	33.0	0.20	1.0	2.2 Cr 0.01 Ti 0.02 Zr	0.02 P 0.04 C 3.0 Cr 0.015 S 0.25 Si 0.20 Ti 0.35 Zr	active
C71950		Rem⁽¹¹⁾		0.005					0.5	1.0	29.0	32.0	0.5	1.0	1.6 Cr 0.20 Si 0.03 Ti 0.05 Zr	0.005 P 0.001 B 0.001 Bi 0.020 C 0.050 Co 2.0 Cr 0.005 S 0.40 Si 0.15 Ti 0.15 Zr	active
C72000 Copper-Nickel Alloy		Rem⁽¹⁾		0.05				0.30	1.5	2.5	40.0	43.0⁽³⁾	0.8	1.7			inactive 02/71
C72150		Rem⁽¹⁾⁽²⁾		0.05				0.20		0.10	43.0⁽³⁾	46.0		0.05		0.10 C 0.50 Si	active
C72200		Rem⁽¹⁾⁽¹⁰⁾⁽¹²⁾		0.05⁽¹⁰⁾				1.0⁽¹⁰⁾	0.50	1.0	15.0⁽³⁾	18.0		1.0	0.30 Cr	0.7 Cr 0.03 Si 0.03 Ti	active
C72400 Copper Nickel		Rem⁽¹⁾		0.05		0.05		0.50		0.10	11.0	15.0⁽³⁾		1.0	1.5 Al 0.05 Mg	2.5 Al 0.40 Mg 1.0 Hg	inactive 03/92
C72420		Rem⁽¹⁾⁽¹³⁾		0.02		0.10		0.20	0.7	1.2	13.5⁽³⁾	16.5	3.5	5.5	1.0 Al	0.01 P 2.0 Al 0.05 C 0.50 Cr 0.05 Mg 0.15 S 0.15 Si	active
C72500*		Rem⁽¹²⁾⁽¹⁾		0.05	1.8	2.8		0.50		0.6	8.5⁽³⁾	10.5		0.20			active
C72600* Copper Nickel	91.0	93.0⁽¹³⁾⁽¹⁾			3.5	4.5		0.50		0.20	3.5⁽³⁾	4.5		0.20		0.05 P	inactive 03/92
C72650*		Rem⁽¹³⁾⁽¹⁾		0.01	4.5	5.5		0.10		0.10	7.0⁽³⁾	8.0		0.10			active
C72660*		Rem⁽²⁾		.02	4.5	5.5		.50		.50	7.0	8.0⁽¹⁴⁾	.05	.30		.15 Mg	active
C72670		Rem⁽²⁾		0.10	4.5	5.5		0.50		0.50	7.0	8.0	0.05	0.30	0.20 Te	0.30 Te 0.15 Mg	active
C72700*		Rem⁽¹³⁾⁽¹⁾		0.02⁽¹⁵⁾	5.5	6.5		0.50		0.50	8.5	9.5⁽³⁾	0.05	0.30		0.15 Mg 0.10 Nb	active
C72800*		Rem⁽¹³⁾⁽¹⁾		0.005	7.5	8.5		1.0		0.50	9.5⁽³⁾	10.5	0.05	0.30	0.005 Mg 0.10 Nb	0.005 P 0.10 Al 0.001 B 0.001 Bi 0.15 Mg 0.0025 S 0.02 Sb 0.05 Si 0.01 Ti 0.30 Nb	active
C72900*		Rem⁽¹³⁾⁽¹⁾		0.02⁽¹⁵⁾	7.5	8.5		0.50		0.50	14.5	15.5⁽³⁾		0.30		0.15 Mg 0.10 Nb	active
C72950*		Rem⁽¹³⁾⁽¹⁾		0.05	4.5	5.7				0.6	20.0⁽³⁾	22.0		0.6			active
C73100* Copper Zinc Nickel Alloy		Rem⁽¹⁾⁽²⁾		0.05		0.10	18.0	22.0		0.10	4.0	6.0		0.50			active
C73150 Copper Nickel		Rem⁽¹⁾		0.10			9.0	15.0		0.25	4.0	7.0		0.50			inactive 03/92
C73200* Copper Nickel		Rem⁽¹⁾		0.05			3.0	6.0		0.6	19.0	23.0		1.0			inactive 03/92
* = are alloys registered with the U.S. EPA as Antimicrobial.
(1) = Cu value includes Ag.
(2) = Cu + Sum of Named Elements 99.5% min.
(3) = Ni value includes Co.
(4) = Ag Includes B
(5) = Cu + Sum of Named Elements, 99.95% min.
(6) = Cu + Sum of Named Elements, 99.92% min.
(7) = The following additional maximum limits shall apply: Si 0.015% S 0.003% Al 0.002% P 0.001% Hg 0.0005% Ti 0.001% Sb 0.001% As 0.001% Bi 0.001% Co 0.05% Mg 0.10% and Oxygen 0.005% Oxygen. For C70690, Co shall be 0.02% max.
(8) = The following additional maximum limits shall apply: Si 0.15% S 0.024% Al 0.05% and P 0.03%.
(9) = Includes P 0.02% max.; Si 0.25% max.; S 0.01% max.; Ti 0.02 - 0.50%.
(10) = The following additional maximum limits shall apply: When the product is for subsequent welding applications and is so specified by the purchaser Zn 0.50% P 0.02% Pb 0.02% S 0.02% (0.008% S for C71110) and C 0.05%.
(11) = Cu + Sum of Named Elements 99.93% min.
(12) = Cu + Sum of Named Elements 99.8% min.
(13) = Cu + Sum of Named Elements 99.7% min.
(14) = Includes Co.
(15) = 0.005% Pb max. for hot rolling.