Austenitic - Ferritic ( Duplex ) Grade Stainless Steel Welded Tubes / Pipes GB/T 21832
GB/T 21832 Austenitic-Ferritic (duplex) Grade Stainless Steel Welded Tubes and Pipes
Spec:
Material:329J3L 1.4462
Size Range:OD:4-1200mm
WT:0.3-200mm
General Length:3-12m
Tolerance:
According to the following tables or customers’ request.
Mechanical Property
| No. | Unified digital code | Steel Grade | Recommended heat treatment system | Tensile property | Hardness | ||||
| Tensile strength Rm/(N/mm2) | Non proportional extension strength Rp0.2/(N/mm2) | Elongation | HBW | HRC | |||||
| ≥ | ≤ | ||||||||
| 1 | S21953 | 022Cr19Ni5Mo3Si2N | 980℃~1040℃ | Rapid cooling | 630 | 440 | 30 | 290 | 30 |
| 2 | S22253 | 022Cr22Ni5Mo3N | 1020℃~1100℃ | Rapid cooling | 620 | 450 | 25 | 290 | 30 |
| 3 | S22053 | 022Cr23Ni5Mo3N | 1020℃~1100℃ | Rapid cooling | 655 | 485 | 25 | 290 | 30 |
| 4 | S23043 | 022Cr23Ni4MoCuN | 925℃~1050℃ | Rapid cooling D≤25mm | 690 | 450 | 25 | - | - |
| Rapid cooling D＞25mm | 600 | 400 | 25 | 290 | 30 | ||||
| 5 | S22553 | 022Cr25Ni6Mo2N | 1050℃~1100℃ | Rapid cooling | 690 | 450 | 25 | 280 | - |
| 6 | S22583 | 022Cr25Ni7Mo3WCuN | 1020℃~1100℃ | Rapid cooling | 690 | 450 | 25 | 290 | 30 |
| 7 | S25554 | 03Cr25Ni6Mo3Cu2N | ≥1040℃ | Rapid cooling | 760 | 550 | 15 | 297 | 31 |
| 8 | S25073 | 022Cr25Ni7Mo4N | 1025℃~1125℃ | Rapid cooling | 800 | 500 | 15 | 300 | 32 |
| 9 | S27603 | 022Cr25Ni7Mo4WCuN | 1100℃~1140℃ | Rapid cooling | 750 | 550 | 25 | 300 | - |
| No hardness required of the steel grade, only have to provide the measured data, not as the delivery conditions | |||||||||
Steel Grade Reference Table
| No. | China | USA | Japan | Europe | |
| Unified digital code | Steel Gade | ASTM A790-05a | JIS G3463.2005 | EN 10217-7.2005 | |
| 1 | S21953 | 022Cr19Ni5Mo3Si2N | S31500 | - | - |
| 2 | S22253 | 022Cr22Ni5Mo3N | S31803 | SUS329J3LTB | X2CrNiMoN22-5-3 1.4462 |
| 3 | S22053 | 022Cr23Ni5Mo3N | S32205 | - | - |
| 4 | S23043 | 022Cr23Ni4MoCuN | S32304 | - | X2CrNiN23-4 1.4362 |
| 5 | S22553 | 022Cr25Ni6Mo2N | S31200 | - | - |
| 6 | S22583 | 022Cr25Ni7Mo3WCuN | S31260 | SUS329J4LTB | - |
| 7 | S25554 | 03Cr25Ni6Mo3Cu2N | S32550 | - | - |
| 8 | S25073 | 022Cr25Ni7Mo4N | S32750 | - | X2CrNiMoN25-7-4 1.4410 |
| 9 | S27603 | 022Cr25Ni7Mo4WCuN | S32760 | - | X2CrNiMoCuWN25-7-4 1.4501 |
Recommended heat treatment system and mechanical property of steel tube
| Number | Steel grade | Recommended Heat treatment system | Tensile property | Hardness | ||||
| Tensile strength Rm/(N/mm²) | Specifies the non-proportional extension strength Rp0.2/MPa | Elongation A/% | HBW | HRC | ||||
| No less than | No more than | |||||||
| 1 | 022Cr19Ni5Mo3Si2N | 980℃~1040℃ | Quenching | 630 | 440 | 30 | 290 | 30 |
| 2 | 022Cr22Ni5Mo3N | 1020℃~1100℃ | Quenching | 620 | 450 | 25 | 290 | 30 |
| 3 | 022Cr23Ni5Mo3N | 1020℃~1100℃ | Quenching | 655 | 485 | 25 | 290 | 30 |
| 4 | 022Cr23Ni4MoCuN | 925℃~1050℃ | Quenching | 690 | 450 | 25 | 290 | 30 |
| 5 | 022Cr25Ni6Mo2N | 1050℃~1100℃ | Quenching | 600 | 400 | 25 | 280 | — |
| 6 | 022Cr25Ni7Mo3WCuN | 1020℃%~1100℃ | Quenching | 690 | 450 | 25 | 290 | 30 |
| 7 | 03Cr25Ni6Mo3Cu2N | ≥1040℃ | Quenching | 760 | 450 | 25 | 297 | — |
| 8 | 022Cr25Ni7Mo4N | 1025℃~1125℃ | Quenching | 800 | 550 | 15 | 300 | 32 |
| 9 | 022Cr25Ni7Mo4WCuN | 1100℃~1140℃ | Quenching | 750 | 550 | 25 | 300 | — |
Duplex stainless steel brand contrast table in different standards
| Number | China | US | Japan | Europe |
| Steel grade in this standard | ASTM A790-05a | JIS G3463:2006 | EN 10217-7:2005 | |
| 1 | 022Cr19Ni5Mo3Si2N | S31500 | — | — |
| 2 | 022Cr22Ni5Mo3N | S31803 | SUS329J3LTH | X2CrNiMoN22-5-3 1.4462 |
| 3 | 022Cr23Ni5Mo3N | S32205 | — | — |
| 4 | 022Cr23Ni4MoCuN | S32304 | X2CrNiN234 1.4362 | |
| 5 | 022Cr25Ni6Mo2N | S31200 | — | — |
| 6 | 022Cr25Ni7Mo3WCuN | S31260 | SUS329J4LTB | — |
| 7 | 03Cr25Ni6Mo3Cu2N | S32550 | — | — |
| 8 | 022Cr25Ni7Mo4N | S32750 | — | X2CrNiMoN25-7-4 1.4410 |
| 9 | 022Cr25Ni7Mo4WCuN | S32760 | — | X2CrNiMnCuWN25-7-4 1.4501 |
Producing Method:Single-sided or double-sided automatic arc welding
Technical Delivery Conditions:Pickled after heat treatment
Widely used in the field of/Application:Pressure equipment, liquid delivery and heat exchanger
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.