What is ASTM A240?
ASTM A240 is a standard specification from ASTM International for chromium and chromium-nickel stainless steel plates, sheets, and strips. It defines the material's chemical composition and mechanical property requirements, covering various grades of stainless steel used for both pressure vessels and general applications like construction, architecture, and food processing equipment. Common grades include 304, 304L, 316, and 316L.
What is ASTM A240 S31254 stainless steel plate?
ASTM A240 S31254 stainless steel plate is a high-performance austenitic stainless steel, also known as 254 SMO or 6Mo stainless steel. Containing a high concentration of nickel, chromium, and molybdenum (approximately 6%), it offers excellent corrosion resistance, especially in high-chloride environments such as seawater. It is widely used in the chemical, pulp and paper, oil and gas, desalination, and marine industries.
ASTM A240 254SMO steel plate Chemical Composition:
| Alloy | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
| 254SMO | 0.02 | 0.8 | 1 | 0.03 | 0.01 | 20 | 18 | 6.1 | 0.7 | 0.2 |
The physical properties of Duplex steel UNS S31254 plate are as follows:
- Density: 7.8 g/cm³
- Melting point: 1390-1440°C
- Electrical resistivity: 0.82 μΩ∙m
- Thermal conductivity: 12.4 W/m∙K
- Modulus of elasticity: 193 GPa
- Poisson's ratio: 0.3
- Specific heat capacity: 500 J/kg∙K
Mechanical Property
|
Yield strength Rp0.2, Mpa |
Tensile strength Rm, Mpa |
Elongation [%] |
Hardness [HB] |
Impact, Sharp-V, -46℃ [J] |
before |
| ≥ 310 | 655 – 850 | ≥ 35 | ≤ 310 | ≥ 45 | ≥ 40 |
ASTM A240 S31254 stainless steel plate price per kg
The price of ASTM A240 S31254 (254SMO) stainless steel plate per kg typically ranges from USD 12 to 18 per kg, depending on thickness, finish, and market conditions.
S31254 stainless steel cold rolled plate application
S31254 (254 SMO) cold-rolled stainless steel plate is suitable for use in high-chloride environments such as seawater, pulp mills, and chemical processing due to its excellent resistance to localized corrosion. Key applications include offshore oil and gas equipment, desalination systems, heat exchangers, and chemical reactors.
GNEE offers ASTM A240 S31254 stainless steel plates with thicknesses ranging from 3.0mm to 100.0mm, widths from 1000mm to 3000mm, and lengths up to 12000mm. All plates are precision rolled and heat-treated, with surface roughness Ra ≤ 0.8μm. Mechanical properties include yield strength ≥ 295MPa, tensile strength ≥ 650-880MPa, and elongation ≥ 35%, meeting the stringent corrosion resistance and structural integrity requirements of industries such as marine engineering, chemical engineering, and pollution control. GNEE also provides value-added services, including cut-to-size, surface polishing, and third-party inspection reports, to ensure quality assurance and operational efficiency for critical applications. Mail:es@gescosteel.com
ASTM A240 S31254 duplex steel plate specification
|
Type |
Plate |
|
Standard |
ASTM,AISI, AMS,MLS,EN,JIS,DIN,GOST ASTM / ASME A240 |
|
Thickness |
1.2-100mm |
|
Width |
1000-1500mm |
|
Length |
1000-6000mm |
|
Surface |
2B, No.3, No.4, HL, BA, 8K |
|
Manufacturing process |
Hot rolled, cold rolled |
|
Packing |
bubble bag and plywood pallet or according to the customers' requirements. The inner size of container is below: 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high) about 24-26CBM 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high) about 54CBM 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high) about 68CBM |
|
Delivery time |
10-100 days depending on quantity |
