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Specification | Steel No. | Chemical composition % | ||||||
C | Si | Mn | S | P | Cr | Mo | ||
GB/T 18254 | GCr15 | 0.95 | 0.15 | 0.25 | below | below | 1.4 | below |
~ | ~ | ~ | 0.025 | 0.025 | ~ | 0.08 | ||
1.05 | 0.35 | 0.45 | 1.65 |
30200 Series | 30300 Series | 32000 Series | 32200 Series | 32300 Series |
30202 | 30304 | 32004 | 32205 | 32305 |
30203 | 30305 | 32005 | 32206 | 32306 |
30204 | 30306 | 32006 | 32207 | 32307 |
30205 | 30307 | 32007 | 32208 | 32308 |
30206 | 30308 | 32008 | 32209 | 32309 |
30207 | 30309 | 32009 | 32210 | 32310 |
30208 | 30310 | 32010 | 32211 | 32311 |
30209 | 30311 | 32011 | 32212 | 32312 |
30210 | 30312 | 32012 | 32213 | 32313 |
30211 | 30313 | 32013 | 32214 | 32314 |
30212 | 30314 | 32014 | 32215 | 32315 |
30213 | 30315 | 32015 | 32216 | 32316 |
30214 | 30316 | 32016 | 32217 | 32317 |
30215 | 30317 | 32017 | 32218 | 32318 |
30216 | 30318 | 32018 | 32219 | 32319 |
30217 | 30319 | 32019 | 32220 | 32320 |
30218 | 30320 | 32020 | 32221 | 32322 |
30219 | 30322 | 32021 | 32222 | 32324 |
30220 | 30324 | 32022 | 32224 | 32326 |
30221 | 30326 | 32024 | 32226 | |
30222 | 32026 | 32228 | ||
30224 | 32028 | 32230 | ||
30226 | 32030 | |||
30228 | ||||
30230 | ||||
30232 |