3RE60 Duplex Stainless Steel
Standards：3RE60 ASTM A789 / A790 Grade（UNS）：S31500 Type：Duplex Stainless steel
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3RE60 Duplex Stainless Steel Characteristics
3RE60 is a special duplex stainless steel with chloride ion stress corrosion resistance by adding 0.05% – 0.10% nitrogen on the basis of duplex stainless steel.
It has high corrosion resistance and high mechanical strength. It has good welding performance and physical properties. It has high stress corrosion cracking ability in the environment containing CI.
Its corrosion resistance is equivalent to that of 316L
This duplex stainless steel is often used in refineries, chemical plants and other pulping industries
Chemical Composition
| C | Mn | Si | Cr | Ni | P | S | Mo | |
| MIN | – | 1.00 | 1.3 | 18.0 | 4.5 | – | – | 2.5 |
| MAX | 0.03 | 2.00 | 2.0 | 19.5 | 5.5 | 0.035 | 0.03 | 3.0 |
Heat treatment
Fast cooling at 920 ～ 1150 ℃ for solid solution
3RE60 Standards
- GB-T standard digital brand: S21953
- New brand of GB-T standard: 022Cr19Ni5Mo3Si2N
- Old brand of GB-T standard: 00Cr18Ni5Mo3Si2
- ASTM standard: S31500
- UNS standard: 3RE60
- JIS standard: dp11
- DIN standard: 1.4424
- EN standard: X2CrNiMOsi18-5-3
Features
- Good weldability
- Good corrosion resistance
- Excellent mechanical strength
- Good stress resistance in CI environment
- High hardness
- High strength
Applications
- Refinery
- Chemical plant
- Pulping industry
- Heat exchanger
Mechanical properties
| Yield strength (Rp0.2 / MPa) | ≥683 |
| Tensile strength (Rm / MPa) | ≥881 |
| Impact (Kv / J) | 22 |
| Elongation (A / %) | 23 |
| Density | 7.8 g/cm³ |
| Hardness (HB) | 324 |
Our duplex stainless steel grades
What is duplex stainless steel ?
Duplex stainless steel is a kind of stainless steel composed of ferrite and austenite. The ferrite content is about 50%, and the austenite content is about 50%. This kind of steel has the characteristics of both austenitic stainless steel and ferritic stainless steel.
About Duplex Stainless Steel Pipe
Duplex stainless steel pipe is one of the main products of our company. It has good corrosion resistance and welding performance. Widely used in steel, smelting, petroleum, chemical, marine equipment and other industries.
Duplex steel applications
Because of the high strength of duplex stainless steel, it can save material, such as reducing the wall thickness of the pipe.
- Oil pipe in oil and natural gas industry
- Crude oil desalting
- Sulfur-containing gas purification
- Wastewater treatment equipment in refinery
- Cooling system using brackish water or chlorine solution
- Read More
Duplex stainless steel properties
Duplex stainless steel has almost twice as much yield strength as austenitic stainless steel, excellent corrosion resistance and weldability, and is widely used in various fields. Read more about the properties of duplex stainless steel