Pb:

Sn:

Bi

Cd

Cu

Fe

Sb

Co+Ni

AL

Zn

As

In

S

≥50%

7%

0.1 ~1

0.002 ~0.006

0.1 ~0.5

0.01 ~0.05

0.04 ~0.2

0.01   ~0.05

0.001 ~0.002

0.005 ~0.1

0.001~0.004

0.01 ~0.1

0.005   ~ 0.01