Category: ship and ocean engineering structural steel, marine steel, shipbuilding steel, hull steel
Delivery condition:As Rolled, Cold Rolled, Q&T, Normalized or TMCP
Z-direction test: Z15, Z25, Z35
Delivery time: Prompt(stock) or 10-40 working days(production)
Tel: 0086-21-61182423
E-Mail: [email protected]
Extra-high tensile strength steel is hull structural steel for extra-high strength ship and ocean engineering application. It has good toughness properties, higher strength, strong corrosion-resistance, the processing properties, and welding properties. This kind of steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons.
Standard: ASTM A131, GB 712-2011
Certification: ABS, BV, CCS, DNV, GL, KR, LR, NK, RINA
Grades: A420/AQ43, D420/DQ43, E420/EQ4, F420/FQ43, A460/AQ47, D460/DQ47, E460/EQ47, F460/FQ47, A500/AQ51 D500/DQ51, E500/EQ51, F500/FQ51, A550/AQ56, D550/DQ56, E550/EQ56, F550/FQ56, A620/AQ63, D620/DQ63, E620/EQ63/EH62/E63, F620/FQ63, A690/AQ70, D690/DQ70, E690/EQ70, F690/FQ70
Dimension: Thickness: 3-150mm; Width: 1220-4200mm; Length: 5000-18000mm
Application: extra-high strength ships and ocean engineering structural steel
Chemical Composition (%)
| Grade | C max | Si | Mn max | P max | S max | Als | N max | Nb max | V max | Ti max | B max |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 420 | 0.21 | 0.10-0.55 | 1.7 | 0.030 | 0.030 | 0.015-0.08 | 0.20 | 0.02-0.05 | 0.04-0.10 | 0.02 | 0.005 |
| 460 | 0.21 | 0.10-0.55 | 1.7 | 0.030 | 0.030 | 0.015-0.08 | 0.20 | 0.04-0.10 | 0.04-0.10 | 0.02 | 0.005 |
| 500 | 0.21 | 0.10-0.55 | 1.7 | 0.030 | 0.030 | 0.015-0.08 | 0.20 | 0.04-0.10 | 0.04-0.10 | 0.02 | 0.005 |
| 550 | 0.21 | 0.10-0.55 | 1.7 | 0.030 | 0.030 | 0.015-0.08 | 0.20 | 0.02-0.05 | 0.04-0.10 | 0.02 | 0.005 |
| 620 | 0.21 | 0.10-0.55 | 1.7 | 0.030 | 0.030 | 0.015-0.08 | 0.20 | 0.02-0.05 | 0.04-0.10 | 0.02 | 0.005 |
| 690 | 0.21 | 0.10-0.55 | 1.7 | 0.030 | 0.030 | 0.015-0.08 | 0.20 | 0.02-0.05 | 0.04-0.10 | 0.02 | 0.005 |
Mechanical Property
| Grade | Mechanical Property | Charpy V Impact Test | ||||
|---|---|---|---|---|---|---|
| Yield Min Mpa | Tensile Mpa | Elongation Min % | Degree | Energy 1 (J) | Energy 2(J) | |
| 420 | 420 | 530-680 | 18% | 0 / -20 / -40 / -60 | 28 | 42 |
| 460 | 460 | 570-720 | 17% | 0 / -20 / -40 / -60 | 31 | 46 |
| 500 | 500 | 610-770 | 16% | 0 / -20 / -40 / -60 | 33 | 50 |
| 550 | 550 | 670-830 | 16% | 0 / -20 / -40 / -60 | 37 | 55 |
| 620 | 620 | 720-890 | 15% | 0 / -20 / -40 / -60 | 41 | 62 |
| 690 | 690 | 770-940 | 14% | 0 / -20 / -40 / -60 | 46 | 69 |
| Classification Society Standard | ||||||||
|---|---|---|---|---|---|---|---|---|
| ABS | BV | CCS | DNV | GL | KR | LR | NK | RINA |
| ABS AQ43 | BV AH420 | CCS AH420 | DNV A420 | GL A420 | KR AH43 | LR AH42 | KA43 | RINA A420 |
| ABS DQ43 | BV DH420 | CCS DH420 | DNV D420 | GL D420 | KR DH43 | LR DH42 | KD43 | RINA D420 |
| ABS EQ43 | BV EH420 | CCS EH420 | DNV E420 | GL E420 | KR EH43 | LR EH42 | KE43 | RINA E420 |
| ABS FQ43 | BV FH420 | CCS FH420 | DNV F420 | GL F420 | KR FH43 | LR FH42 | KF43 | RINA F420 |
| ABS AQ47 | BV AH460 | CCS AH460 | DNV A460 | GL A460 | KR AH47 | LR AH46 | KA47 | RINA A460 |
| ABS DQ47 | BV DH460 | CCS DH460 | DNV D460 | GL D460 | KR DH47 | LR DH46 | KD47 | RINA D460 |
| ABS EQ47 | BV EH460 | CCS EH460 | DNV E460 | GL E460 | KR EH47 | LR EH46 | KE47 | RINA E460 |
| ABS FQ47 | BV FH460 | CCS FH460 | DNV F460 | GL F460 | KR FH47 | LR FH46 | KF47 | RINA F460 |
