GB-CuSn7ZnPb 2.1091 GB-Rg7 - DIN 17656-1973

Grade	GB-CuSn7ZnPb
Germany W-Nr.	2.1091
Old Grade
Corresponding Standard	DIN 17656-1973 Copper alloys ingots; chemical composition
Classification	Copper and Copper Alloys

GB-CuSn7ZnPb Chemical Element Composition Content (%)

Component	Fe	Si	Mn	P	S	Ni	Cu	As	Pb	Al	Zn	Sn	Sb	Other Total
Minimum Value	-	-	-	-	-	-	81	-	5.3	-	3.3	6.3	-	-
Maximum Value	0.2	0.01	0.1	0.03	0.06	1.8	84.5	0.1	7	0.01	5	8	0.25	0.4

"Other individual elements or other totals": The chemical composition includes elements not specified in the table. Analysis should only be conducted if these elements are suspected to be present, or if routine analysis suggests that their content may exceed the prescribed limits.

• Ni counts as Cu
• Sand, centrifugal, and continuous casting

Approximate Comparison Table Cupper and cupper alloy

Germany		European Standard
DIN EN/DIN	W-Nr.	EN	Numerical Grade
GB-CuSn7ZnPb	2.1091	CuSn7Zn4Pb7-B	CB493K

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!