Stainless pipe fitting,stainless fitting,duplex stainless,31803,32750,32760,we are one of largest sour service stainless fitting supplier according to ISO 10156.
Uns S31803 Pipe Suppliers, We stock and Supply Duplex S31803 Rectangular and Square pipe in various size, check Duplex S31803 Seamless Tube Specification.
Detailed description
- Standard: JIS, ANSI, ASTM, GB, DIN, EN
- Place of Origin: ShangHai, China (Mainland)
- Brand Name: C&N HuiTong
- Model Number: seamless and welded
- Steel Grade: UNS32750
- Application: Oil and gas industry equipment.Chemical process industries
- Certification: SGS、TUV
- Thickness: SCH10S to SCHXXS
- Outer Diameter: DN15 ~DN1200
Description of Super Duplex Stainless Steel:
Super Duplex Stainless Steel is a highly alloyed, good performance duplex steel with a pitting resistance. Super duplex offers good resistance to pitting and crevice corrosion.Super duplex is suited for use in aggressive environments. It has good resistance to stress corrosion cracking in chloride and sour environments and has good resistance to erosion corrosion and corrosion fatigue.
Application:
Oil and gas industry equipment.
Offshore platforms, heat exchangers, process and service water systems, fire – fighting systems, injection and ballast water system.
Chemical process industries, heat exchangers, vessels, and piping.
Desalination plants, high pressure RO – plant and seawater piping.
Mechanical and structural components, high strength, corrosion – resistant parts.
power industry FGD systems, utility and idustrial scrubber systems, absorber towers, ducting, and piping.
Chemical composition%
| C | Cr | Ni | Mo | N | Others |
| 0.020 | 25 | 7 | 4.0 | 27 | S=0.001 |
| Pren= (Cr%)+3.3 (Mo%)+16 (N%) not less than 40 | |||||
Mechanical Performance:
| Ultimate Tensile Strength, Ksi | 116min |
| 0.2%Offset Yield Strength 0.2%, Ksi | 80min |
| 0.1%Offset Yield Strength 0.2%, Ksi | 91min |
| Elongation in 2 inches, % | 15 min |
| Hardness Rockwell C | 32 max |
| Impact Energy, ft. – lbs. | 74min |
Low Temperature Impact Properties:
| Temperature 0F | RT | 34 | – 4 | – 40 |
| Ft – lbs | 162 | 162 | 155 | 140 |
| Temperature 0F | – 76 | – 112 | – 148 | – 320 |
| Ft – lbs | 110 | 44 | 30 | 7 |
Elevated temperature Tensile Properties:
| Temperature 0F | 68 | 212 | 302 | 392 | 482 |
| 0.2%Offset Yield Strength, Ksi | 80 | 65 | 61 | 58 | 55 |
| Ultimate Tensile Strength, Ksi | 116 | 101 | 98 | 95 | 94 |
Chemical composition%
| C | Cr | Ni | Mo | N | Others |
| 0.020 | 25 | 7 | 4.0 | 27 | S=0.001 |
| Pren= (Cr%)+3.3 (Mo%)+16 (N%) not less than 40 | |||||
Mechanical Performance:
| Ultimate Tensile Strength, Ksi | 116min |
| 0.2%Offset Yield Strength 0.2%, Ksi | 80min |
| 0.1%Offset Yield Strength 0.2%, Ksi | 91min |
| Elongation in 2 inches, % | 15 min |
| Hardness Rockwell C | 32 max |
| Impact Energy, ft. – lbs. | 74min |
Low Temperature Impact Properties:
| Temperature 0F | RT | 34 | – 4 | – 40 |
| Ft – lbs | 162 | 162 | 155 | 140 |
| Temperature 0F | – 76 | – 112 | – 148 | – 320 |
| Ft – lbs | 110 | 44 | 30 | 7 |
Elevated temperature Tensile Properties:
| Temperature 0F | 68 | 212 | 302 | 392 | 482 |
| 0.2%Offset Yield Strength, Ksi | 80 | 65 | 61 | 58 | 55 |
| Ultimate Tensile Strength, Ksi | 116 | 101 | 98 | 95 | 94 |
