Wuxi Hongcheng Metal Products Co.,Ltd

 

 

304 stainless steel sheet is a common material in stainless steel with a density of 7.93 g/cm3. 304 stainless steel contains more than 18% chromium and more than 8% nickel; 800℃ high temperature resistance, with good processing performance, high toughness, widely used in industrial and furniture decoration industries as well as food and medical industry. However, it should be noted that the content index of food grade 304 stainless steel is more stringent than ordinary 304 stainless steel. For example: the international definition of 304 stainless steel is basically 18% -20% chromium and 8% -10% nickel, but food grade 304 stainless steel is 18% chromium and 8% nickel, allowing to fluctuate in a certain range, and limit the content of various heavy metals. In other words, 304 stainless steel is not necessarily food grade 304 stainless steel

 

 

Composition content required by the various standards

1. ASTM A276 (Standard Specification for Stainless steel bars and profiles)

304 carbon, manganese, phosphorus, silicon, chromium-nickel

Requirements,% 0.082.000.0450.0301.0018.0-20.0 8.0-11.0

2. ASTM A240 (pressure vessels and generally applied chromium and chromium nickel stainless steel plates, sheets and strips)

304 C Mn P S Si Cr Ni N

Requirement,% 0.072.000.0450.0300.07517.5-19.5 8.0-10.50.1

3. JIS G4305 (cold-rolled, stainless steel plate, steel plate and steel strip)

SUS 304 C Mn P S Si Cr Ni

Requirements,% 0.082.000.0450.0301.0018.0-20.0 8.0-10.5

4. JIS G4303 (stainless steel rod)

SUS 304 C Mn P S Si Cr Ni

Requirements,% 0.082.000.0450.0301.0018.0-20.0 8.0-10.5

 

 

Tensile strength σ b (MPa) 515-1035

Conditional yield strength σ 0.2 (MPa) 205

Elongation rate is δ 5 (%) 40

Area contraction ψ(%)≥-

Hardness: 201 HBW; 92 HRB; 210 high pressure

Density (20℃, g / cm³): 7.93

Melting point (℃): 1398~1454

Specific heat capacity (0~100℃, KJkg-1K-1): 0.50

Thermal conductivity (W · m-1 · K-1): (100℃) 16.3, (500℃) 21.5

Line expansion coefficient (10-6 · K-1): (0~100℃) 17.2, (0~500℃) 18.4

Resistor (20℃, 10-6 Ω·m2 / m): 0.73

Longitudinal modulus of elasticity (20℃, KN/mm2): 193

 

 

Excellent corrosion resistance, excellent high temperature creep strength, good processing hardening, solid solution state of no magnetic properties, and a higher price than 201 stainless steel.

Corrosion resistance: 304 stainless steel cold-rolled plate can be used because of its high chromium and nickel content, especially good corrosion resistance, atmospheric corrosion resistance and high temperature strength, which can be used under harsh conditions. Its less carbon content makes it more corrosion resistant

High temperature creep strength: 304 stainless steel can still maintain excellent creep strength under high temperature conditions, which makes it have good stability when applied in high temperature environment.

Processing hardening: 304 stainless steel cold rolled plate has good processing hardening after processing, that is, weak magnetism after processing, which makes it can maintain good mechanical properties in the processing process.

Non-magnetic properties: In the solid solution state, 304 stainless steel cold rolled plate has no magnetic properties, which provides a convenience for the application of non-magnetic materials 2.

Price: relative to 201 stainless steel, 304 stainless steel price is higher. This is because of the alloy composition and performance standards of 304 stainless steel are higher, resulting in a higher cost 2.

In addition, the 304 stainless steel cold car rolling. The surface of the board is silvery white, relatively smooth and more delicate to the touch, which provides a good choice in the application field with high appearance requirements.

 

 

 

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