Standard Grade

GB/T8890
B7

Cu

Balance

Ni+Co

6-7

Pb

0.01

Fe

0.2

P

0.01

Mn

0.2

S

0.01

C

0.03

Sb

0.005

Bi

0.002

As

0.01

Total impurities

0.3

Condition

M

Y2

Tensile Strength
N/mm2

270 min.

300 min.

Elongation (%)

35

18

Typical use

This alloy has similar characteristic of CuNi 90/10, but with low content of Nickel.
Longda invents and has the patent of this alloy

• Hot Working Properties: Good
Density (20°C): 8,94 g/cm3 • Cold Working Properties: Good

Weight Formula

Average Wall: (OD-WT) x WT x 0,0284= Kg/m (all sizes in mm)
Minimum Wall: (OD-WT) x WT x 0,0295 = Kg/m (all sizes in mm)