X22CrMoV12-1
1.4923Martensitic creep-resistant stainless steel for high-temperature applications up to 600°C. V and Mo additions provide excellent creep rupture strength and high-temperature oxidation resistance. Hardenable to approximately 280 HB. Used for steam and gas turbine blades, high-temperature bolts, valve spindles, and fasteners in power generation. Standardized in EN 10302 (creep-resistant steels) and EN 10269 (high-temp fasteners).
Chemical composition comparison (wt%)
Side-by-side: X22CrMoV12-1 (EN) (EN 10302) vs ASTM
| Element | X22CrMoV12-1 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | 0.18–0.24% | — | — |
| Si | ≤ 0.5% | — | — |
| Mn | ≤ 1% | — | — |
| P | ≤ 0.025% | — | — |
| S | ≤ 0.015% | — | — |
| Cr | 11–12.5% | — | — |
| Mo | 0.8–1.2% | — | — |
| Ni | 0.3–0.8% | — | — |
| V | 0.25–0.35% | — | — |
Mechanical properties
QT
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 780–980 | MPa |
| Yield Strength | ≥ 590 | MPa |
| Elongation | ≥ 15 | % |
| impact_kv | ≥ 27 | J |
| Density | ≥ 7.7 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| hardening | 1020–1070 °C | oil | — | Oil or air quench |
| tempering | 680–750 °C | air | — | Double temper recommended |
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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