Unified Numbering Systemfor Copper + Copper Alloys

Cast Copper Alloys: High Copper Alloys (C81400 - C83299)

Standard Designation for Cast Copper Alloys

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UNS #	Cu		Pb		Sn		Zn		Fe		Ni		Al		Ag		Be		Co		Cr		Si		Other Named Elements		Status
UNS #	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Min%	Max%	Status
C81400 Copper Beryllium 70C		Rem⁽¹⁾															0.02	0.10			0.6	1.0					active
C81500 Chrome Copper		Rem⁽¹⁾		0.02		0.10		0.10		0.10				0.10							0.40	1.5		0.15			active
C81540	95.1⁽¹⁾⁽²⁾			0.02		0.10		0.10		0.15	2.0	3.0⁽³⁾		0.10							0.10	0.6	0.40	0.8			active
C81700* Copper Beryllium	94.2⁽¹⁾										0.25	1.5			0.8	1.2	0.30	0.55	0.25	1.5							inactive 03/92
C81800* Copper Beryllium 50C	95.6⁽¹⁾														0.8	1.2	0.30	0.55	1.4	1.7							inactive 03/92
C82000* Copper Beryllium 10C		Rem⁽¹⁾		0.02		0.10		0.10		0.10		0.20		0.10			0.45	0.8	2.40⁽⁴⁾	2.70		0.09		0.15			active
C82100* Copper Beryllium	95.5										0.25	1.5					0.35	0.8	0.25	1.5							inactive 03/92
C82200* Copper Beryllium 3C		Rem⁽¹⁾									1.0	3.0					0.35	0.8		0.30				0.15			active
C82400* Copper Beryllium 165C		Rem⁽¹⁾		0.02		0.10		0.10		0.20		0.20		0.15			1.60	1.85	0.20	0.65		0.09					active
C82500* Copper Beryllium 20C		Rem⁽¹⁾		0.02		0.10		0.10		0.25		0.20		0.15			1.90	2.25	0.35⁽⁴⁾	0.70		0.09	0.20	0.35			active
C82510* Copper Beryllium 21C		Rem⁽¹⁾		0.02		0.10		0.10		0.25		0.20		0.15			1.90	2.15	1.0	1.2		0.09	0.20	0.35			active
C82600* Copper Beryllium 245C		Rem⁽¹⁾		0.02		0.10		0.10		0.25		0.20		0.15			2.25	2.55	0.35	0.65		0.09	0.20	0.35			active
C82700* High Copper Alloy		Rem⁽¹⁾		0.02		0.10		0.10		0.25	1.0	1.5		0.15			2.35	2.55				0.09		0.15			active
C82800* Copper Beryllium 275C		Rem⁽¹⁾		0.02		0.10		0.10		0.25		0.20		0.15			2.50	2.85	0.35	0.70⁽⁴⁾		0.09	0.20	0.35			active
* = are alloys registered with the U.S. EPA as Antimicrobial.
(1) = Cu + Sum of Named Elements 99.5% min.
(2) = Cu value includes Ag.
(3) = Ni value includes Co.
(4) = Ni + Co.