Simbi inogona kukamurwa kuita yakaderera kabhoni simbi, yepakati kabhoni simbi uye yakakwira kabhoni simbi.Yakaderera kabhoni simbi - kabhoni yemukati kazhinji isingasviki 0.25%;yepakati kabhoni simbi - kabhoni yemukati kazhinji iri pakati pe0.25 ne0.60%;yakakwira kabhoni simbi - kabhoni yemukati kazhinji yakakura kupfuura 0.60%.
Executive mwero: nyika yangu Taiwan CNS yakajairika simbi nhamba S20C, yeGerman DIN yakajairwa zvinhu nhamba 1.0402, yeGerman DIN yakajairika simbi nhamba CK22/C22.British BS yakajairika simbi nhamba IC22, French AFNOR mwero simbi nhamba CC20, French NF mwero simbi nhamba C22, Italian UNI mwero simbi nhamba C20/C21, Belgium NBN mwero nhamba simbi C25-1, Sweden SS mureza simbi nhamba 1450, Spain UNE yakajairika simbi Nhamba F.112, American AISI/SAE simbi yakajairika Nhamba 1020, Japanese JIS mureza simbi No. S20C/S22C.
Mushonga weKemikari: Carbon C: 0.32～0.40 Silicon Si: 0.17～0.37 Manganese Mn: 0.50～0.80 Sulfur S: ≤0.035 Phosphorus P: ≤0.035 Chromium Cr: ≤Nick02: ≤5 Nick02: ≤5 Nick02. , mechanical properties : Tensile simba σb (MPa): ≥530 (54) Goho simba σs (MPa): ≥315 (32) Elongation δ5 (%): ≥20 Area shrinkage ψ (%): ≥45 Impact simba Akv ( J): ≥ 55 kukanganisa kuoma kukosha αkv (J/cm²): ≥69 (7) Kuoma: kusina kupisa ≤197HB Saizi yemuenzaniso: saizi yemuenzaniso ndeye 25mm Kuitwa kwehunyanzvi National standard: GB699-1999
