304 DDQ Stainless Steel
304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm3, also known as 18/8 stainless steel in the industry. Its high temperature up to 800 °C, and has a good processing performance, high toughness characteristics, widely used in industrial and furniture decoration industry and food and medical industries.
The common marking methods in the market are 0Cr18Ni9, SUS304, where 0Cr18Ni9 generally represents the national standard production, 304 generally represents the ASTM standard production, and SUS 304 represents the daily standard production.
304 is a versatile stainless steel that is widely used to make equipment and parts that require good overall performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 18% of chromium, more than 8% of the nickel content. 304 stainless steel is a grade of stainless steel produced according to American ASTM standards.
Tensile strength σb (MPa) ≥515-1035
Conditional yield strength σ0.2 (MPa) ≥ 205
Elongation δ5 (%)≥40
Section shrinkage ψ (%)≥?
Hardness: ≤201HBW; ≤92HRB; ≤210HV
Melting point (°C): 1398~1454
Specific heat capacity (0~100°C, KJ·kg-1K-1): 0.50
Thermal conductivity (W·m-1·K-1): (100°C) 16.3, (500°C) 21.5
Linear expansion coefficient (10-6·K-1): (0~100°C) 17.2, (0~500°C) 18.4
Resistivity (20°C, 10-6Ω·m): 0.73
Longitudinal Elastic Modulus (20°C, KN/mm2): 193