KW-TCuNi (CuNi)

70%Cu-30%Ni Cupronickel and copper alloys. It can be used for surfacing steels and dissimilar welding of copper alloys with steels.

Key Features

Sizes (mm)	Standard		Welding Position View(+)	Shielding gas	Polarity
1.2~3.2	AWS A5.7 EN 14640 JIS Z 3341 KS D 7044	ERCuNi S Cu 7158 (CuNi30) YCuNi-3 YCuNi-3	F, HF, H, VU, VD, OH	Ar	DC(-)

Typical chemical composition of wire (%)
Cu	Si	Mn	P	S	Cr	Ni	Mo	Remark
Rem.	0.08	0.79	–	–	–	30.71	–	Ti : 0.30

Typical mechanical properties of all-weld metal
Y.S (MPa)	T.S (MPa)	EI. (%)	Hardness (HV)	IV (J)	PWHT
–	345	30	–	–	–