SA240/SA240m Type 304L Stainless Steel Plate
Hot Finished in Solution Annealed Pickled and Passivated No. 1 Finished
Product Overview
SA240/SA240M Type 304L Stainless Steel Plate Hot Finished in Solution Annealed Pickled and Passivated NO.1 Finished
Surface Treatment Characteristics
| Surface Finish |
Characteristics and Application |
| NO.2B |
Better surface brightness and flatness than NO.2D. Special surface treatment improves mechanical properties, suitable for comprehensive uses. |
| NO.1 |
Surface finished by heat treatment and pickling after hot rolling. |
| NO.4 |
Polished with abrasive belt grit #150-#180, better brightness with discontinuous coarse striations. Used for bathtubs, building ornaments, appliances, kitchen utensils, and food processing equipment. |
| HL |
Polished with abrasive belt grit #150-#320 on NO.4 finish with continuous streaks. Used for building ornaments, elevators, doors, and frontal plates. |
| BA |
Cold rolled, bright annealed and skin-passed. Excellent brightness and mirror-like reflexivity for kitchen apparatus and ornaments. |
| 8K |
Excellent brightness and superior mirror-like reflexivity. |
Chemical Composition
Carbon (C): ≤0.03%
Silicon (Si): ≤1.0%
Manganese (Mn): ≤2.0%
Chromium (Cr): 18.0-20.0%
Nickel (Ni): 8.0-10.0%
Sulfur (S): ≤0.03%
Phosphorus (P): ≤0.045%
Physical Properties
| Property |
Value |
| Tensile Strength σb (MPa) |
≥ 520 |
| Yield Strength σ0.2 (MPa) |
≥ 205 |
| Elongation δ5 (%) |
≥ 40 |
| Section Shrinkage ψ (%) |
≥ 60 |
| Hardness |
≤ 187HB; ≤ 90HRB; ≤ 200HV |
| Melting Point (°C) |
1398 - 1454 |
| Specific Heat Capacity (0-100°C, KJ/kgK) |
0.50 |
| Thermal Conductivity (W/m·K) |
16.3 (100°C), 21.5 (500°C) |
| Linear Expansion Coefficient |
17.2 (0-100°C), 18.4 (0-500°C) |
| Resistivity (20°C, 10⁻⁶ Ω·m) |
0.73 |
| Longitudinal Elastic Modulus (20°C, KN/mm²) |
193 |
Corrosion Resistance
Stainless steel's exceptional resistance to corrosion and staining, combined with low maintenance requirements and attractive luster, makes it ideal for numerous applications. The alloy is steam-cleanable and sterilizable without needing paint or other surface finishes.
Applications
- Food preparation equipment, especially in chloride environments
- Chemical processing equipment
- Laboratory benches and equipment
- Rubber, plastics, pulp & paper machinery
- Pollution control equipment
- Boat fittings, valves and pump trim
- Commercial kitchens and food processing plants
- Cookware, cutlery, and household hardware
- Surgical instruments and major appliances
- Industrial equipment and automotive components
- Construction materials for large buildings