1.2379 equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for 1.2379 across standard systems. Each match is graded so you can see how safe the substitution is. Cold-work tool steel, 12 % Cr ledeburitic — full 1.2379 data sheet.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| D2 | AISI / SAE | Identical | AISI D2 (UNS T30402, ASTM A681): C 1.40–1.60, Cr 11–13, Mo 0.70–1.20, V 0.50–1.10. Same steel; 1.2379 has a slightly tighter V/Mo window. |
| BD2 | BS (superseded British) | Identical | BS 4659 BD2. |
| Cr12Mo1V1 | GB/T (China) | Identical | GB/T 1299 Cr12Mo1V1 (D2 type): C 1.40–1.60, Cr 11–13, Mo 0.70–1.20, V 0.50–1.10. Cr12MoV is the older lower-Mo Chinese grade. |
| SKD11 | JIS (Japan) | Identical | JIS G4404 SKD11: C 1.40–1.60, Cr 11–13, Mo 0.80–1.20, V 0.20–0.50 — vanadium lower; hardenability and wear resistance close. |
| 1.2436 | EN (European) | Near | X210CrW12 (D6): tungsten-bearing 12 % Cr, slightly higher wear resistance, lower toughness. |
| Kh12MF | GOST (Russia/CIS) | Near | GOST 5950 Kh12MF: C 1.45–1.65, Cr 11–12.5, Mo 0.40–0.60, V 0.15–0.30 — lower Mo and V. |
| 1.2363 | EN (European) | Functional | X100CrMoV5 (A2): 5 % Cr air-hardening steel with better toughness, lower wear resistance. |
| 1.2842 | EN (European) | Functional | 90MnCrV8 (O2) oil-hardening steel for less demanding dies. |
Identical = same composition and mechanical limits within rounding. Near = one limit differs (e.g. carbon max or impact temperature). Functional = interchangeable for most uses after an engineering check.
How the matches are graded
Identical means the chemical composition windows overlap so that material certified to one specification meets the other without deviation, and the mechanical minimums are the same or the other is inside them — mills usually dual-certify. Near means one limit differs (a carbon maximum, an impact temperature, a strength minimum or a delivery condition) and a substitution needs a one-line engineering check. Functional means the grades serve the same purpose but are not the same steel — a designer can often use one for the other, but only after re-checking the design.
1.2379 in AISI / SAE
- D2 — Identical AISI D2 (UNS T30402, ASTM A681): C 1.40–1.60, Cr 11–13, Mo 0.70–1.20, V 0.50–1.10. Same steel; 1.2379 has a slightly tighter V/Mo window.
1.2379 in BS (superseded British)
- BD2 — Identical BS 4659 BD2.
1.2379 in GB/T (China)
- Cr12Mo1V1 — Identical GB/T 1299 Cr12Mo1V1 (D2 type): C 1.40–1.60, Cr 11–13, Mo 0.70–1.20, V 0.50–1.10. Cr12MoV is the older lower-Mo Chinese grade.
1.2379 in JIS (Japan)
- SKD11 — Identical JIS G4404 SKD11: C 1.40–1.60, Cr 11–13, Mo 0.80–1.20, V 0.20–0.50 — vanadium lower; hardenability and wear resistance close.
1.2379 in EN (European)
- 1.2436 — Near X210CrW12 (D6): tungsten-bearing 12 % Cr, slightly higher wear resistance, lower toughness.
- 1.2363 — Functional X100CrMoV5 (A2): 5 % Cr air-hardening steel with better toughness, lower wear resistance.
- 1.2842 — Functional 90MnCrV8 (O2) oil-hardening steel for less demanding dies.
1.2379 in GOST (Russia/CIS)
- Kh12MF — Near GOST 5950 Kh12MF: C 1.45–1.65, Cr 11–12.5, Mo 0.40–0.60, V 0.15–0.30 — lower Mo and V.
Superseded names for 1.2379
- X155CrVMo12-1 — DIN 17350 (withdrawn): Same number 1.2379; renamed X153CrMoV12 in EN ISO 4957.
- X210Cr12 (1.2080) — DIN 17350: The older 2 % C / 12 % Cr steel (D3) it replaced — harder but more brittle.
- BD2 — BS 4659
- Z160CDV12 — NF A 35-590
- K110 — Böhler trade name: Sverker 21 (Uddeholm), Cryodur 2379 (Buderus), Thyrodur 2379.
Key data for 1.2379
Full composition, mechanical properties by thickness, heat treatment and applications for 1.2379 →
Verified against EN ISO 4957:2018. Last checked: September 2026.