SKD11
Data verifiedSKD11 is the JIS cold work tool steel equivalent to AISI D2 and DIN 1.2379 — the Asian-market designation buyers meet on Japanese and Korean mill certificates.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 1.40–1.60 |
| Si | ≤0.40 |
| Mn | ≤0.60 |
| Cr | 11.00–13.00 |
| Mo | 0.80–1.20 |
| V | 0.20–0.50 |
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 | 7.70 g/cm³ |
Heat treatment
Harden 1000–1050 °C air/oil; temper 150–250 °C for max hardness or ~500 °C for secondary hardening.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.2379 |
| aisi | D2 |
| jis | SKD11 |
| gb | Cr12Mo1V1 |
Compare side by side: SKD11 vs D2 · SKD11 vs D3 · SKD11 vs DC53
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, IC molds, gauges, cold forming tools.
Processing: As D2: machine annealed, grind hardened; low distortion with air hardening.
FAQ
- Is SKD11 exactly the same as D2?
- Functionally yes — composition windows overlap almost completely. Certificates differ only in the governing standard (JIS G4404 vs ASTM A681).
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Ask for a quotationVisit NasteelSource: JIS G4404 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.