3.3210¾T´Î 3.3210¾TªO 3.3210¾TºÞ 3.3210¾T¿õ 3.3210¾T±a 3.3210¾T½u
3.3210¤Æ¾Ç¦¨¤À¦p¤U¡G
Si:0.5~0.9
Fe:0.35
Cu:0.30
Mn:0.50
Mg:0.40~0.7
Cr:0.30
Zn:0.20
Ti:0.10
Mn+Cr0.12~0.50,Ni:0.10
Al:Êe¶q