Usage:
Heat exchanger and tube on oil desalt device, catalyst tube bank of the tubular reactor for methanol manufacturing, condenser for VCM, convey pipe and header of land/ocean oil/gas industry; Heat exchanger, water treatment and supply system, fire extinguishing system, spraying system and water stabilizing system of the offshore platform; Pressure vessel, channels tanks, and heat exchanger used in chemicals process and transportation in the chemical industry.
General characteristic:
1. High intensity and tenacity, excellent mechanical performance.
2. Good resistance to corrosive pitting and crevice corrosion.
3. Good resistance to stress corrosion cracking.
4. Good resistance to uniform corrosion.
5. The material has bigger heat conductivity and smaller linear expansibility.
6. Good welding performance, a small tendency of hot cracking.
Microstructure:
Duplex of ferrite-austenite under solution condition, the content of austenite is 40~60%, no brittleness precipitation of σ, etc.
Contrast of grades:
| China (GB/T21833) | US | SW | DE |
| 022Cr19Ni5Mo3Si2N | S31500 | 3RE60 | 1.4424 |
| 022Cr22Ni5Mo3N | S31803 | - | 1.4462 |
| 022Cr23Ni5Mo3N | S32205 | SAF2205 | - |
| 022Cr25Ni7Mo4N | S32750 | SAF2507 | 1.4410 |
Physical Property:
| Physical Property | Unit | 20℃ | 100℃ | 200℃ | 300℃ |
| Density | kg/dm3 | 7.8 | - | - | - |
| Electrical Resistivity | μΩm | 0.80 | 0.85 | 0.90 | 1.00 |
| Thermal Conductivity | W/m℃ | 15 | 16 | 17 | 18 |
| Specific Heat | J/kg℃ | 500 | 530 | 560 | 590 |
| Modulus of Elasticity | Gpa | 200 | 194 | 186 | 180 |
| Poissons Ratio | 0.3 | ||||
| Coefficient of Expansion | x10-6/℃ | 13.0 | 13.5 | 14.0 |