X32CrMoV3-3
1.2365Chromium-molybdenum hot work tool steel (AISI H10) with high Mo content for excellent resistance to thermal softening and thermal fatigue. Can be safely water-cooled in service, unlike tungsten hot work steels. Achieves 50-52 HRC. Used for hot forging dies, die casting dies (especially aluminum), hot extrusion tools, hot punches, and hot shear blades. Superior thermal fatigue resistance compared to H11/H13 in continuous high-temperature service above 600°C. EN designation: 32CrMoV12-28.
Chemical composition comparison (wt%)
Side-by-side: X32CrMoV3-3 (EN) (EN ISO 4957) vs ASTM
| Element | X32CrMoV3-3 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | 0.28–0.35% | — | — |
| Si | 0.1–0.4% | — | — |
| Mn | 0.15–0.45% | — | — |
| P | ≤ 0.03% | — | — |
| S | ≤ 0.02% | — | — |
| Cr | 2.7–3.2% | — | — |
| Mo | 2.6–3% | — | — |
| V | 0.4–0.7% | — | — |
Mechanical properties
Annealed
| Property | Value | Unit |
|---|---|---|
| Hardness HB | ≤ 235 | HB |
QT
| Property | Value | Unit |
|---|---|---|
| Hardness HRC | 50–52 | HRC |
| Tensile Strength | ≥ 980 | MPa |
| Density | ≥ 7.85 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| annealing | 800–840 °C | furnace | — | Slow cool, max 235 HB |
| hardening | 1020–1060 °C | air | — | Air or oil quench; vacuum possible |
| tempering | 520–700 °C | air | — | Double temper, 50-52 HRC |
Related materials
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M2 / HS6-5-2
1.3343The most widely used high-speed steel worldwide. W-Mo-Cr-V composition gives excellent red hardness (cuts at temperatures up to 600°C). Used for twist drills, end mills, taps, reamers, bandsaw blades, and general-purpose cutting tools. The benchmark HSS grade.
X45NiCrMo4
1.2767Nickel cold-work tool steel with exceptional toughness from ~4% Ni content. Excellent through-hardenability, polishability, and impact resistance. Used for plastic injection molds (high-gloss), embossing dies, scrap shear blades, punches, cutlery dies, and bending tools.
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