S31603 Hot Rolled No. 1 Stainless Steel Plate.Video
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S31603 Hot Rolled No. 1 Stainless Steel Plate.Video
Introduction to S31603 Hot-Rolled Type 1 Stainless Steel Plate
1. Material Grade & Standards
UNS Number: S31603 (Corresponds to 316L stainless steel, extra-low carbon grade)
Standards:
Chinese (GB): GB/T 24511 (Stainless Steel Plates and Strips for Pressure Equipment)
American (ASTM): ASTM A240 (Stainless Steel Plates for Pressure Vessels)
Others: EN 1.4404 (European), JIS SUS316L (Japanese)
Product Type: Hot-rolled stainless steel plate. "Type 1" typically refers to the "1D" surface finish (hot-rolled and pickled), which features a silver-white, slightly rough surface suitable for further processing.
2. Chemical Composition (Weight %, Standard Values)
| Element | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| Standard | 0.03 | 1.0 | 2.0 | 0.045 | 0.03 | 16.0–18.5 | 10.0–14.0 | 2.0–3.0 |
Key Characteristics:
Extra-Low Carbon (C ≤ 0.03%): Significantly reduces the risk of intergranular corrosion during welding, making it ideal for welded structural components.
Molybdenum Addition (2–3%): Enhances resistance to chloride-induced corrosion (e.g., pitting and crevice corrosion) by ~50% compared to 304 stainless steel.
Austenitic Microstructure: Exhibits excellent high-temperature toughness, non-magnetic properties, and maintains good ductility at low temperatures.
3. Mechanical Properties (Hot-Rolled, Thickness ≤ 20mm)
| Property | Index | Test Standard | Comparison to 304 Hot-Rolled Plate |
|---|---|---|---|
| Tensile Strength (MPa) | ≥480 | GB/T 228 | Slightly lower (304: ≥515 MPa) |
| Yield Strength (MPa) | ≥170 | GB/T 228 | Similar |
| Elongation (%) | ≥40 | GB/T 228 | Same |
| Hardness (HB) | ≤217 | GB/T 231 | Similar |
| High-Temperature Resistance | Max. service temp. ~800°C (under continuous load) | - |
