Ferritic · Stainless Steel
409 Titanium-stabilised Ferritic Stainless Steel
Chemical composition and mechanical properties to ASTM A240; available sizes are standard ranges.
① Chemical composition (ASTM A240, %)
| Element | Range |
|---|---|
| C | ≤0.08 |
| Si | ≤1.00 |
| Mn | ≤1.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 10.5–11.75 |
| Ti | 6×C–0.75 |
② Mechanical properties (ASTM A240)
| Property | Requirement |
|---|---|
| Tensile strength Rm | ≥ 380 MPa |
| Yield strength Rp0.2 | ≥ 170 MPa |
| Elongation A | ≥ 20% |
| Hardness | ≤ 179 HBW |
③ Available sizes (standard range)
- Thickness: 0.5–3.0 mm
- Width: ≤ 1219 mm
- Form: coil / sheet / plate / circle / slit strip on request
- Surface: 2B · BA · No.1 · No.4 · HL · 8K on request
④ Applicable standards
ASTM A240 · JIS G4305
⑤ Typical applications
Automotive exhaust systems, mufflers, agricultural machinery, heat-resistant low-corrosion parts
⑥ Substitution and selection advice
Low-cost heat-resistant ferritic grade dedicated to exhaust and muffler applications. Not suitable for wet corrosive environments.
Chemical and mechanical data quoted from the public ASTM A240 standard. Available sizes are standard ranges; the contract and technical agreement prevail.