White Metal 7th Class

[WJ-7]
White Metal 7th Class is good to use for a bearing for medium speed and medium weight, and is used for small size electric motor, journal of car such as freight car, elevator, crusher and so on.
Composition of White Metal 7th Class [WJ-7]
Sn
Sb
Cu
Pb
Zn
As
Impurities
Pb
Fe
Zn
Al
Bi
As
Cu
11.0~13.0
13.0~15.0
under
1.0
rest
-
-
-
under
0.10
under
0.05
under
0.01
-
under
0.20
-
Physical and Mechanical Property of White Metal 7th Class [WJ-7]
Base Element
Freezing Temp.
℃
Specific Gravity
Hardness
BHN20℃
Tensile Strength
kg/?A
Elongation
%
Compressive Strength
kg/?A
0.125%
Fatigue Strength
kg/?A
(20000000)
Pb
245~268
9.37
28.7
7.37
1.2
2.60
-
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