CuSn4 CW450K - EN 1654-1998

Grade	CuSn4
European Standard Steel Grade	CW450K
Corresponding Standard	EN 1654-1998 Copper and copper alloys - Strip for springs and connectors
Classification	Copper and Copper Alloys
Properties	Hardness
Density	8.9 g/cm³

CuSn4 Chemical Element Composition Content (%)

Component	Fe	P	Ni	Pb	Zn	Sn	Other Total	More
Minimum Value	-	0.01	-	-	-	3.5	-	Cu:余量
Maximum Value	0.1	0.4	0.2	0.02	0.2	4.5	0.2	Cu:余量

"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.

CuSn4 Mechanical Properties

condition	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Strip	CuSn4-R390	R390	390~490		≥11ⓐ ；≥13ⓑ
Strip	CuSn4-H115	H115				HV: 115~155
Strip	CuSn4-Y320	Y320		320~(420)	≥11ⓐ ；≥13ⓑ
Strip	CuSn4-R480	R480	480~570		≥4ⓐ ；≥5ⓑ
Strip	CuSn4-H150	H150				HV: 150~180
Strip	CuSn4-Y440	Y440		440~(530)	≥4ⓐ ；≥5ⓑ
Strip	CuSn4-R540	R540	540~630		≥3ⓐ ；≥4ⓑ
Strip	CuSn4-H170	H170				HV: 170~200
Strip	CuSn4-Y510	Y510		510~(600)	≥3ⓐ ；≥4ⓑ
Strip	CuSn4-R610	R610	≥610		≥2ⓑ
Strip	CuSn4-H190	H190				HV: ≥190
Strip	CuSn4-Y580	Y580		≥580	≥2ⓑ

1 Approximate Comparison Table bronze

China		United States		International Organization for Standardization		Germany		European Standard		Russia
GB	ISC	ASTM	UNS	ISO	Numerical Grade	DIN EN/DIN	W-Nr.	EN	Numerical Grade	GOST
QSn4-0.3	C51100	96Cu-4Sn-.2P	C51100	CuSn4	C51100	CuSn4	2.1016 C51100	CuSn4	CW450K	БрОФ4-0.25

2 Approximate Comparison Table Cupper and cupper alloy

Germany		European Standard
DIN EN/DIN	W-Nr.	EN	Numerical Grade
CuSn4	2.1016	CuSn4	CW450K

CuSn4 Corresponding Standards(Same grade name, different standards)

1	EN 12166-1998
	CuSn4 CW450K
2	EN 1654-1998
	CuSn4 CW450K
3	EN 12166-2016
	CuSn4 CW450K
4	DIN EN 12166-2016
	CuSn4 CW450K
5	DIN EN 12166-1998
	CuSn4 CW450K
6	ISO 427-1983
	CuSn4

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