1.2436 (D6)
Data verified1.2436 is the tungsten-bearing D6 cold work steel: D3-class carbide volume with tungsten added for air hardening and superior dimensional stability. It is the European precision-gauge and die counterpart to the American D-family.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 2.00–2.30 |
| Si | 0.10–0.40 |
| Mn | 0.30–0.60 |
| Cr | 11.00–13.00 |
| W | 0.60–0.80 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Delivery condition | Annealed |
| Hardness (hardened) | 58–62 HRC |
| Density | 7.80 g/cm³ |
| Dimensional stability | Excellent (air hardening, W-bearing) |
Heat treatment
Harden 950–980 °C air; temper 180–250 °C, double temper for gauges.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.2436 |
| aisi | D6 |
| jis | SKD2 |
| gb | Cr12W (near) |
Compare side by side: 1.2436 (D6) vs D4 · 1.2436 (D6) vs D3 · 1.2436 (D6) vs D7
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Precision blanking dies, gauges, thread rolling dies, deep drawing dies, long-wear punches.
Processing: Air hardening minimizes movement; grinding is slow due to carbide content. Toughness is low, as with all 12% Cr steels.
FAQ
- D6 (1.2436) vs D2 (1.2379)?
- D6 has more carbon and tungsten, air hardens with less distortion and holds size better in gauges; D2 is tougher and cheaper for general blanking.
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Ask for a quotationVisit NasteelSource: EN ISO 4957 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.