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Chemical composition % of grade CuZn31Si1 ( CW708R )

Fe	Si	Ni	Cu	Pb	Others	-
max 0.4	0.7 - 1.3	max 0.5	66 - 70	max 0.8	total 0.5	Zn - remainder

Mechanical properties of grade CuZn31Si1 ( CW708R )

Rm - Tensile strength (MPa) (R460)

460

Rm - Tensile strength (MPa) (R530)

530

Rp0.2 0.2% proof strength (MPa) (R460)

250

Rp0.2 0.2% proof strength (MPa) (R530)

330

A - Min. elongation at fracture (%) (R460)

22

A - Min. elongation at fracture (%) (R530)

12

Brinell hardness (HB): (H115)	115 - 145
Brinell hardness (HB): (H140)	140

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