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Hot Rolled Stainless Steel Sheet, 304 Sheet Metal Corrosion Resistant
300 Series stainless steels are classified as austenitic, and are hardenable only by cold working methods. These grades of stainless have chromium (approx. 18 to 30%) and nickel (approx. 6 to 20%) as their major alloying additions. Type 304 is the most widely used alloy of all stainless steels. 300 Series Stainless steel alloys resist corrosion, maintain their strength at high temperatures and are easy to maintain.
304 Chemical Properties:
C: ≤0.08 ,Si :≤1.0 ,Mn :≤2.0 ,Cr :18.0～20.0 ,
Ni : 8.0～10.0,S :≤0.03 ,P :≤0.045
Pysical properties:
| Tensile strength σb (MPa | ≥ 520 | Specific heat capacity(0 ~ 100 ℃, KJ kgK) | 0.50 |
| Conditions yield strength | σ0.2 (MPa) ≥ 205 | Thermal conductivity (W m. K) | (100 ℃), 16.3 21.5 (500 ℃) |
| Elongation δ5 (%) | ≥40 | The linear expansion coefficient k. | (0 ~ 100 ℃), 17.2 (0 ~ 500 ℃) of 18.4 |
| Section shrinkage ψ (%) | ≥ 60 | Resistivity (20 ℃, 10 Ω m.) | 0.73 |
| Hardness | ≤ 187HB; ≤ 90HRB; ≤ 200HV | The longitudinal elastic modulus (20 ℃, KN/mm) | 193 |
| Melting point (℃) | 1398 ~ 1454 | Specific heat capacity | 0.50 |
| Surface Finish | Definition | Application |
| 2B | Those finished, after cold rolling, by heat treatment, pickling or
other equivalent treatment and lastly by cold rolling to given appropriate luster. | Medical equipment, Food industry, Construction material, Kitchen utensils. |
| BA | Those processed with bright heat treatment after cold rolling. | Kitchen utensils, Electric equipment, Building construction. |
| NO.3 | Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001. | Kitchen utensils, Building construction. |
| NO.4 | Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001. | Kitchen utensils, Building construction, Medical equipment. |
| HL | Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size. | Building construction. |
| NO.1 | The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling. | Chemical tank, pipe. |
Stainless steel plate is an alloy steel with smooth surface, high weldability, corrosion resistance, polishability, heat resistance, corrosion resistance and other characteristics. It is widely used in various industries and is an important material in modern industry. Stainless steel is divided into austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, and duplex stainless steel according to the structure state. Austenitic Stainless Steel: stainless steel with an austenitic structure at room temperature. Steel contains Cr≈18%, Ni≈8%-25% and C≈0.1%. Steel has high toughness and plasticity, but low strength.
