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For high pressure chemical fertilizer equipment, (working temperature 40 ~ 400 ℃ & working pressure 3 ~ 10 MPa)
Product Standard: GB6479
Main steel grades: 20G, 16Mn, 15MnV, 10MoWVNb, 12CrMo, 15CrMo, 1Cr5Mo
| Standard | Grade | Chemical Composition（％） | |||||||
| C | Si | Mn | P | S | Cr | Mo | Ni | ||
| GB6479 | 10 | 0.07～0.14 | 0.17～0.37 | 0.35～0.65 | ≤0.030 | ≤0.030 | / | / | / |
| 20 | 0.17～0.24 | 0.17～0.37 | 0.35～0.65 | ≤0.030 | ≤0.030 | / | / | / | |
| 16Mn | 0.12～0.20 | 0.20～0.60 | 1.20～1.60 | ≤0.030 | ≤0.030 | ||||
| 10MoWVNb | 0.07～0.13 | 0.50～0.80 | 0.50～0.80 | ≤0.030 | ≤0.030 | / | 0.60～0.90 | / | |
| 15CrMo | 0.12～0.18 | 0.17～0.37 | 0.40～0.70 | ≤0.030 | ≤0.030 | 0.80～1.10 | 0.40～0.55 | / | |
| 1Cr5Mo | ≤0.15 | ≤0.50 | ≤0.60 | ≤0.030 | ≤0.030 | 4.00～6.00 | 0.45～0.60 | ≤0.60 | |
| 12 Cr2Mo | 0.80～0.15 | ≤0.50 | 0.40～0.70 | ≤0.030 | ≤0.030 | 2.0～2.50 | 0.90～1.20 | ||
| Standard | Grade | TS（MPa） | YS（MPa） | Elongation（％） | AK（J） | Akv |
| GB6479 | 10 | 335～490 | ≥205 | ≥24 | / | －20℃≥18 |
| 20 | 410～550 | ≥245 | ≥24 | ≥39 | －20℃≥18 | |
| 16Mn | 490～670 | ≥320 | ≥21 | ≥47 | －40℃≥21 | |
| 10MoWVNb | 470～670 | ≥295 | ≥19 | ≥62 | ||
| 15CrMo | 440～640 | ≥235 | ≥21 | ≥47 | ||
| 1Cr5Mo | 390～590 | ≥195 | ≥22 | ≥94 | ||
| 12 Cr2Mo | 450～600 | ≥280 | ≥20 | ≥38 |
