Duplex Stainless Steels are magnetic and offer significantly enhanced corrosion and fatigue resistance.
Duplex Stainless Steel Overview
Duplex stainless steels are magnetic alloys that offer significantly greater corrosion resistance compared to standard stainless grades such as 302 and 316. They are distinguished by their high yield strength, strong resistance to fatigue, and excellent performance in corrosive environments.
Duplex Composition
| C | 硅 | 锰 | 磷 | 小号 | 铬 | 你 | 莫 | ñ | |
|---|---|---|---|---|---|---|---|---|---|
| Min % | - | - | - | - | - | 21 | 4.5 | 2.5 | 0.1 |
| Max % | 0.03 | 1 | 2 | 0.035 | 0.015 | 23 | 6.5 | 3.5 | 0.22 |
Designations and Specifications
Designations
- W.Nr 1.4462
- UNS S31803
- UNS S32205
Specifications
- BS EN ISO 6931-1
- ISO 15156-3
- NACE MR 0175
应用领域
Common Duplex Stainless Steel Alloy applications include:
- 斯普林斯
- 化学加工
- 石油和天然气
- Filtration
- Marine Environments
- 污染控制设备
抗拉强度
| Condition | N/mm² | KSI |
|---|---|---|
| Annealed | <1100 | <159 |
| Condition | As Drawn | |
|---|---|---|
| N/mm² | KSI | |
| Spring Temper | 1300-1900 | 189-276 |