组分含量组分含量 Mg 0.80 Zn (0.08) Ti (0.04) Cr (0.15)

Sn (0.001) Pb (0.003) Zr (0.001) Bi (0.001) Sb (0.001)

 Cd (0.001) Sr (0.001) Be 0.0005 Cu (0.15) Ni (0.05) V (0.01)

Si 0.55 Fe 0.30 Mn (0.05) Ga (0.02) Co (0.001) Ag (0.001) B