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, %)
| 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: coil / sheet / plate / disc / cut-to-length strip
- 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-wall welded components, large tanks, chemical equipment, piping, welded assemblies without post-weld heat treatment
⑥ Substitution & Selection Guide
Slightly lower strength than 304 but better intergranular corrosion resistance after welding. If post-weld solution annealing is applied, 304 is sufficient.
Chemical and mechanical data cited from the public ASTM A240 standard. Available sizes are standard ranges; the contract and technical agreement shall prevail.