| Product Name: | Stainless Steel | Standard: | ASTM A312 / ASME SA312 |
|---|---|---|---|
| Material: | TP304/304L/304H/316L/309S/310S/316L/316H/317H/321/253MA/254SMO， Etc. | O.D.: | 1/2”to 48” |
| W.T.: | SCH 5S To XXS | Length: | Single Random， Double Random & Cut Length |
| End: | Plain Ends， Beveled Ends | Type: | Seamless， Welded |
| Surface: | Pickled And Annealed | ||
| High Light: | 254SMO Duplex Stainless Steel， Round Duplex Stainless Steel Pipes， Pickled Annealed Duplex Stainless Steel Pipes | ||
ASTM A312 UNS S31254 / 254SMO Duplex Stainless Steel
Duplex stainless steels are characterized by their high levels of both ferrite and austenite phases， which give them excellent strength and corrosion resistance. ASTM A312 254SMO / UNS S31254 duplex Stainless Steels are commonly used in industries such as chemical processing， oil and gas， and pulp and paper. These pipes are made using a seamless manufacturing process， which ensures that they have a uniform wall thickness and smooth surface finish. They are available in various sizes and thicknesses， and can be customized to meet specific requirements.
Equivalent Grade of A312 254SMO Stainless Steels
| UNS | EN Number | EN Name | W.Nr. | SS | AFNOR |
| S31254 | 1.4547 | X1CrNiMoCuN20-18-7 | 1.4529 | 2378 | Z1 CNDU 20.18.06AZ |
Chemical Composition of ASTM A312 254SMO Stainless Steels
| C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| ≤0.020 | ≤0.80 | ≤1.00 | ≤0.030 | ≤0.010 | 20 | 18 | 6.1 | 0.20 | 0.7 |
Mechanical Properties of ASTM A312 254SMO Stainless Steels
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 680 MPa | 98600 psi |
| Yield strength | 300 MPa | 43500 psi |
| Modulus of elasticity | 195 GPa | 28300 ksi |
| Shear modulus | 75 GPa | 10900 ksi |
| Poisson’s ratio | 0.30 | 0.30 |
| Elongation at break | 50 % | 50 % |
| Hardness， Brinell | 210 | 210 |
The physical properties of ASTM A312 254SMO Stainless Steels
| Specific Heat (0-100°C) | 500 | J.kg-1.°K-1 |
| Thermal Conductivity | 14 | W.m -1.°K-1 |
| Thermal Expansion | 16.5 | mm/m/°C |
| Modulus Elasticity | 196 | GPa |
| Electrical Resistivity | 8.5 | μohm/cm |
| Density | 8.0 | g/cm3 |
The Thermal Properties of ASTM A312 254SMO Stainless Steels
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@20-100°C/68-212°F) | 16.5 µm/m°C | 9.17 µin/in°F |
| Thermal conductivity | 14 W/mK | 97.2 BTU in/hr.ft².°F |
Apllications
Saltwater handling
- Tall oil distillation columns
- Flue gas desulfurization scrubbers
- Components used in petroleum production
- Food processing equipment
- Process equipment in chemical industry
- Bleaching equipment in the pulp and paper industry
- Flue-gas cleaning
- Desalination
- Heat exchangers
- Equipment for handling of seawater， such as， seawater cooling， cooling water Pipes， ballast water systems， firefighting systems etc.
- Hydraulic and instrumention tubing
- Equipment in pulp bleaching plants
- Components in gas cleaning systems
- Tanks and pipelines for chemicals with high halide contents
