Ngwakọta Kemịkalụ
Ọkwa
C%
P%
S%
Mn%
Si%
Cu%
Ni%
Kọ%
Fe%
1J22
Oke kachasị 0.04
Kachasị 0.020
Oke kachasị 0.30
Kachasị 0.20
Oke -0.5
49.0~51.0
Bọl.
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