X14CrMoS17
1.4104Free-cutting martensitic stainless steel with Mo and S additions. Equivalent to AISI 430F. Higher Cr (15.5-17.5%) and Mo addition provide better corrosion resistance than X12CrS13 while maintaining excellent machinability from S content. Used for automatic screw machine parts, fasteners, valve bodies, pump shafts, and precision components requiring both corrosion resistance and easy machining.
Chemical composition comparison (wt%)
Side-by-side: X14CrMoS17 (EN) (EN 10088-3) vs ASTM
| Element | X14CrMoS17 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | 0.1–0.17% | — | — |
| Si | ≤ 1% | — | — |
| Mn | ≤ 1.5% | — | — |
| P | ≤ 0.04% | — | — |
| S | 0.15–0.35% | — | — |
| Cr | 15.5–17.5% | — | — |
| Mo | 0.2–0.6% | — | — |
Mechanical properties
QT
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 700–900 | MPa |
| Yield Strength | ≥ 500 | MPa |
| Elongation | ≥ 10 | % |
| Density | ≥ 7.7 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| hardening | 980–1030 °C | oil | — | Oil quench |
| tempering | 150–350 °C | air | — | — |
| annealing | 760–810 °C | furnace | — | Soft annealing |
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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