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Chemical composition % of grade CuNi7Zn39Pb3Mn2 ( CW400J )

Fe	Mn	Ni	Cu	Pb	Sn	Others	-
max 0.3	1.5 - 3	6 - 8	47 - 50	2.3 - 3.3	max 0.2	total 0.2	Zn - remainder

Mechanical properties of grade CuNi7Zn39Pb3Mn2 ( CW400J )

Rm - Tensile strength (MPa) (R510)

510

Rp0.2 0.2% proof strength (MPa) (R510)

400

A - Min. elongation at fracture (%) (R510)

A - Min. elongation Lo = 100mm (%) (R510)

Brinell hardness (HB): (R510)

150

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