Rapidly passing the sensitized temperature range 425-815 ☌ (800-1500 ☏), thus Cr does not have enough time to combine with C, and it is impossible to precipitate chromium carbide.In order to prevent sensitization, the following methods can be used for AISI 304 stainless steel: Therefore, its corrosion resistance is lowered. Carbon and chromium combine to form chromium carbide, which precipitates at the crystal boundary, so the Cr content near the grain boundary is greatly reduced, and becomes a Cr-depleted region. Sensitization occurs when type 304 austenitic stainless steel is heated between 425 and 815 ☌ (800-1500 ☏). Continuous service temperature: 925 ☌ (1700 ☏).Intermittent service temperature: 870 ☌ (1600 ☏).Type 304 stainless steel is not magnetic, but may be slightly magnetic after cold working. Mean coefficient of thermal expansion, (10 -6/K) Modulus of elasticity (Elastic modulus), GPa (psi) Mechanical Properties, data are for 25.4 mm (1 in.) diameter barĭatasheet 3, ASTM 304 Stainless Steel Properties – Mechanical Properties Mechanical Propertiesĭata comes from professional, authoritative and trustworthy ASTM standards. SS304 Stainless Steel Mechanical Properties Datasheet-2, the tables below list SS304 material mechanical properties including yield strength, tensile strength, elongation and hardness, etc. Type 304 grade stainless steel composition is given in table below.ĭatasheet 1, AISI 304 stainless steel composition Chemical Composition, % The following datasheet and specification show SS 304 stainless steel properties including physical properties and mechanical properties. For more information, please check 304 vs 304L stainless steel and 304 vs 316 stainless steel. AISI 316 is better than 304 in certain properties, corrosion resistance and heat resistance, etc. SS 304 is widely used in the industrial use, furniture decoration, food and medical industry, etc.ĪISI 304L is the low carbon version of 304 stainless steel, AISI 303 is a free-machining steel, basically a variant of SS304, which increases the phosphorus (P) and sulfur (S) content and improves the machinability. Type 304 has good processability, weldability, corrosion resistance, heat resistance, low temperature strength and mechanical properties, good hot workability such as stamping and bending, and no heat treatment hardening. Because SS304 contains 18% chromium (Cr) and 8% nickel (Ni), it’s also known as 18/8 stainless steel. AISI 304 stainless steel (UNS S30400) is the most commonly used material in stainless steels, and is usually purchased in an annealed or cold worked state.

Ss316 composition