12CRMOV asye wonn (GB/T 3077) gen yon konpozisyon nan 0.08-0.15% kabòn (C), 0.17-0.37% Silisyòm (SI), 0.40-0.70% Manganèz (MN), 0.90-1.20% CHROMIUM (CR), 0.25-0.35% MOLYM MOLYUM (LO, 0.25-0.35. Mwens pase oswa egal a 0.035% P, mwens pase oswa egal a 0.035% S.
Konpare ak 12cr1mov (0.08-0.15% C, 0.17-0.37% SI, 0.40-0.70% MN, 0.90-1.20% CR, 0.25-0.35% Mo, 0.15-0.30% V), de klas yo nan yo nan Vyolans yo ki gen rapò ak yo nan Van an (0.20-0.25% vs . 12 CR1MOV a 0.15-0.30%), ki optimize modere - Tanperati (450-550 degre) fluaj rezistans.
Vanadyòm fòme carbides VC ki PIN debwatman ak limit grenn - kritik pou reziste kont ranpe . 12 Crmov a pi sere ranje V asire carbid VC yo inifòm gwosè (10-20 nm) ak gaye, evite patikil yo koryas. Patikil VC koryas yo mwens efikas nan debwatman epenglaj, diminye rezistans fluaj. Pa kontwole V a 0.20-0.25%, 12CRMOV kenbe ki konsistan gwosè VC ak distribisyon, sa ki lakòz yon 20-25% pi ba ranpe pousantaj nan 500 degre pase 12cr1mov ak kontni V varyab.