Type: | Stainless Steel Pipes |
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Standard: | ASTM |
Grade: | 1.4547 |
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254SMO is a type of austenitic stainless steel that contains high levels of molybdenum, chromium, and nickel. It is also known as UNS S31254 or 1.4547. This material is popular for its exceptional resistance to corrosion caused by various types of chemicals, such as sulfuric acid, hydrochloric acid, and seawater. It has a high level of strength and toughness at both room and elevated temperatures. It is often used in industries such as chemical processing, pulp and paper, and offshore oil and gas due to its excellent durability.
Chemical Composition of ASTM A312 254SMO Stainless Steel Seamless Pipes
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 Steel Seamless Pipes
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 Steel Seamless Pipes
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 Steel Seamless Pipes
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 |
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