Austenitic · Stainless Steel
304L Low-Carbon Austenitic Stainless Steel
Chemical composition and mechanical properties per ASTM A240; available sizes are standard ranges.
① Chemical Composition (ASTM A240, %)
| Base Element | Range |
|---|---|
| C | ≤0.03 |
| Si | ≤0.75 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 18.0–20.0 |
| Ni | 8.0–12.0 |
② Mechanical Properties (ASTM A240)
| Property | Requirement |
|---|---|
| Tensile Strength Rm | ≥ 485 MPa |
| Yield Strength Rp0.2 | ≥ 170 MPa |
| Elongation A | ≥ 40% |
| Hardness | ≤ 201 HBW |
③ Available Sizes (Standard Range)
- Thickness: 0.3–60 mm
- Width: ≤ 2000 mm
- Form: strip / sheet / plate / round billet / slit strip on request
- Surface: 2B · BA · No.1 · No.4 · HL · 8K on request
④ Applicable Standards
ASTM A240 · EN 10088-2 · JIS G4304/4305 · GB/T 3280
⑤ Typical Applications
Thick-walled welded parts, large tanks, chemical equipment, piping, welded structures not heat-treated after welding
⑥ Substitution and Selection Guidance
Slightly lower strength than 304 but better resistance to intergranular corrosion after welding. If solution annealing after welding is applied, 304 is sufficient.
Chemical and mechanical data are sourced from the public standard ASTM A240. Available sizes are standard ranges; the contract and technical agreement take precedence.