| Material | austenitic stainless steel |
| Standard | EN 10088-1 |
| Grade | 1.4541 |
| Main properties and application | 1.4541 Stainless steel is a versatile and widely used steel; steel weldability is good and this grade, as well as stainless steel grades with titanium content, are recommended for use in welded products; steel is weakly magnetic, in the heat-treated state it is practically non-magnetic; steel grade 1.4541 is recommended for long products and hot-rolled sheets not produced on continuous rolling mills; good resistance to atmospheric and intergranular corrosion, combined with heat resistance, stability, strength, ease of processing, the ability to use in a wide temperature range, made this steel grade one of the most produced and used in various industries around the world, including for the manufacture of machine parts and apparatus for food and commercial engineering, consumer goods, etc.; it is possible to smelt steel of this group with a low carbon content.
Compared to 1.4301, 1.4541 stainless steel has higher creep strength and tensile strength, and good low temperature toughness. However, 1.4301 wire mesh is generally more affordable than 1.4541 and is often used in most situations, unless the wire mesh is to be used in an operating environment with temperatures above 420°C (since 1.4541 has better hot strength properties) . If resistance to intergranular corrosion after welding is the only requirement, 1.4301 alloy is preferred given its greater stock availability. |
| Operating temperature | recommended operating temperature not more than 900°С; melting point 1400°С |
| Grade analogue | AISI 321; Poland (PN): 1H18N9T; GB: BS 321S31; UNS S32100; Japan: SUS321 |
| Density | 7.92 g/cm3 |
| Corrosion resistance | wire, wire clothes and view screens made of stainless steel 1.4541 has good resistance to atmospheric and intergranular corrosion, including in saturated steam, when working at high and low temperatures and in aggressive environments, in solutions of nitric, acetic, phosphoric acids, solutions of alkalis and salts, in sea water; 1.4541 steel is recommended to be used as corrosion resistant; used in environments with greater aggressiveness, including for welded products; 1.4541 steel grade is unstable in sour environments. |
| Notes regarding corrosion | weather resistance: higher than ordinary carbon steel (St.0-St.3, etc.) uncoated 4500 times higher than galvanized steel 500 times higher than aluminum 50 times higher than brass 25 times. PREN (EPC - Pitting Resistance Equivalent): 20 |
