SMO 254 Material in standard UNS 31254 is a high end stainless steel which is designed specifically to offer increased strength and toughness along with an increased resistance to chloride and crevice corrosion.
The stainless steel grade of SMO 254 Products offer highly commendable physical properties including a density of 8 g/cm3 metric or 0.289 lb/in3 imperial. The mechanical properties can be summarised as mentioned below:
Mechanical Properties of SMO 254:
| Property | 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 |
Chemical Composition of SMO 254:
| Element | % Content |
| Carbon | 0.01 |
| Chromium | 20 |
| Iron | 55.69 |
| Molybdenum | 6.1 |
| Nickel | 18 |
| Nitrogen | 0.2 |
The physical and chemical properties of SMO 254 Round Bars allow it to be used under extreme environments such as sea water and chloride based applications. The SMO 254 Pipes offered are preferred for oil distillation columns, food processing equipments as well as bleaching equipments among others majorly because they are annealed, pickled, and cold drawn and polished as per requirements. All the products of SMO 254 grade exhibit great welding properties although they require filler materials which maintains the strength of the material. Hot working of these products above the temperature range of 982 -1142 degree Celsius, results into scaling and reduced workability of the material. Post process annealing is preferred in order to retain its maximum corrosion resistance. Although cold working of these materials are a little difficult, it can be performed as per all the traditional methods and the outcome is an increased strength and toughness.
SMO 254 Flanges and SMO 254 Pipe Fittings are a cost effective alternatives for high nickel and titanium alloys, in a range of applications. They offer great workability and an increased connectivity to pipes. Also, they have a longer service life in the refining industry from low to high pressure applications. SMO 254 Sheets & Plates are 2 mm to 3 mm thick, and the high molybdenum content combined with nickel and copper offers an imperviousness to setting and fissure erosion particularly in situation containing particles such as bromide, chloride, and fluoride solutions. Therefore, they are preferred over the 300 series for sea water applications, marine solutions and shut circle water frameworks among others.
The thermal expansion co-efficient of this grade at 20 – 1000 C / 68 – 2120 F is metric 16.5 µm/m0C or 9.17 µin/in0F imperial, where as the thermal conductivity is 14 W/mK or 97.2 BTU in/hr.ft2.0F. These materials are not quite receptive to heat treatment and so, hardening of these materials can only be done through cold reduction.
We are a renowned professional manufacturers, suppliers and exporters of 254 sheets, plates and coils across the world, offering products that are in compliance with the national and international standards. They are manufactured using very high quality raw materials. We offer 254 sheets, plates and coils I thickness ranging from 3 mm to 100 mm in various standards such as ASTM A240, UNS 31254 F44/ 1.4547 / 2378. We offer these products in hot rolled, cold rolled, 2B, 2D, BA NO(8), SATIN and other finishes, in the form of foils, coils, rolls, plain sheet, strips, flats and circles. Contact us for more details and we assure you to offer a very competitive price list for all our products.