X6CrAl13
1.4002Ferritic chromium-aluminum stainless steel with good oxidation resistance up to 850°C. The aluminum addition (0.10–0.30%) improves scaling resistance at elevated temperatures by forming a protective Al₂O₃ layer. Non-hardenable by heat treatment. Used for furnace parts, burner nozzles, heat exchangers, and automotive exhaust system components.
Chemical composition comparison (wt%)
Side-by-side: X6CrAl13 (EN) (EN 10088-2:2005) vs ASTM
| Element | X6CrAl13 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | ≤ 0.08% | — | — |
| Si | ≤ 1% | — | — |
| Mn | ≤ 1% | — | — |
| P | ≤ 0.04% | — | — |
| S | ≤ 0.015% | — | — |
| Cr | 12–14% | — | — |
| Al | 0.1–0.3% | — | — |
Mechanical properties
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 400–630 | MPa |
| Yield Strength | ≥ 250 | MPa |
| Elongation | ≥ 20 | % |
| Hardness HB | ≤ 180 | HB |
| Density | ≥ 7.7 | g/cm3 |
| Elastic Modulus | ≥ 220 | GPa |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| annealing | 750–850 °C | air | — | Recrystallization annealing. Not hardenable by heat treatment. |
Related materials
304 Stainless Steel
1.4301The most widely used austenitic stainless steel. Excellent corrosion resistance, good formability and weldability. Standard choice for food processing, chemical, and architectural applications.
316L
1.4404Low-carbon austenitic stainless steel with molybdenum addition. Superior corrosion resistance to 304, especially against chlorides and pitting. Standard choice for chemical processing, marine, medical implants, and pharmaceutical equipment.
430 Stainless Steel
1.4016Ferritic chromium stainless steel with good corrosion resistance and formability. Lower cost than austenitic grades. Used for automotive trim, kitchen sinks, architectural panels, and appliance components.
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