Ngwakọta kemịkalụ
Ọkwa
C%
P%
S%
Mn%
Si%
Cu%
Ni%
Co%
Fe%
1J22
Oke 0.04
Kachasị 0.020
Kachasị 0.30
Kachasị 0.20
Oke -0.5
49.0-51.0
Bal.