DNV Qib A420 D420 E420 F420 steel phaj yog cov qib steel ntawm lub zog siab ntxiv shipbuilding phaj uas yog siv los ua lub cev ntawm cov hlab ntsha, lub nkoj lub cev siv. Feem ntau thaum dov ntawm steel phaj DNV Qib A420 D420 E420 F420, kev kho cua sov yuav tsum tau quenching thiab Tempering los txhim kho steel lub zog nyob rau hauv yield thiab tensile ntsiab lus.
DNV Qib A420 Shipbuilding Steel Phaj Chemical Composition thiab Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.21 |
0.55 | 1.70 |
0.030 |
0.030 |
0.020 |
| Yield zog (MPa) min. | Tensile zog (MPa) | Elongation min. % |
| 420 | 530-680 | 18 |
DNV Qib D420 Shipbuilding Steel Phaj Chemical Composition thiab Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Yield zog (MPa) min. | Tensile zog (MPa) | Elongation min. % |
| 420 | 530-680 | 18 |
DNV Qib E420 Shipbuilding Steel Phaj Chemical Composition thiab Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Yield zog (MPa) min. | Tensile zog (MPa) | Elongation min. % |
| 420 | 530-680 | 18 |
DNV Qib F420 Shipbuilding Steel Phaj Chemical Composition thiab Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.18 |
0.55 | 1.60 |
0.020 |
0.020 |
0.020 |
| Yield zog (MPa) min. | Tensile zog (MPa) | Elongation min. % |
| 420 | 530-680 | 18 |
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Cim npe nrov: a420 d420 e420 f420 kub dov steel phaj, Tuam Tshoj a420 d420 e420 f420 kub dov steel phaj manufacturers, lwm tus neeg, Hoobkas
