Cr12MoV is not part of our stocked range — the D2-family Cr12Mo1V1 covers this duty better, and D3-type work is quoted against Cr12MoV by name when a drawing demands it. Even so, Cr12MoV is the most common economy cold-work tool steel in Chinese die shops, and the most commonly mis-cross-referenced steel in incoming inspection. Knowing what it is equivalent to — and what it is not — prevents a lot of scrapped dies.
The grade is a high-carbon, high-chromium ledeburitic steel with molybdenum and vanadium additions. It offers excellent wear resistance for the price, and it comes with two real limitations: lower toughness than Cr12Mo1V1 or Cr8Mo2SiV, and a narrower heat-treatment window with a strong tendency to distort.
GB standard reference
- Standard
- GB/T 1299 (alloy tool steel) · GB/T 1220 (stainless)
- GB grades in this article
- Cr12MoV · Cr12Mo1V1
- Also sold as
- D3 / SKD3 / 1.2601 / Kh12M · D2 / SKD11 / 1.2379 / Kh12MF
- Hardness range
- HRC 58-60 (Cr12MoV) · HRC 58-62 (Cr12Mo1V1)
1. Cross-Reference: What Cr12MoV Really Is
| Standard | Designation | Notes |
|---|---|---|
| GB (China) | Cr12MoV | The reference designation |
| AISI (US) | D3 (approximate) | D3 has higher carbon at 2.0-2.35%; not identical |
| DIN (Germany) | 1.2601 / X165CrMoV12 | Closest European match |
| JIS (Japan) | SKD3 (approximate) | Close in carbon, slightly different vanadium |
| Common wrong cross-reference | Cr12MoV / Cr12Mo1V1 | Cr12Mo1V1 is much tougher and lower carbon — do not substitute blindly |
A drawing that specifies Cr12Mo1V1 but is fulfilled with Cr12MoV will produce a die that is harder and less tough than intended. Expect edge chipping on thin profiles. Always verify the spectral analysis report against the drawing, not against the supplier's description.
- Carbon content
- 1.45-1.70%
- Chromium content
- 11.0-12.5%
- Annealed hardness
- HB 207-255
- Working hardness
- HRC 58-60 (up to 62 with care)
- Typical delivery
- Φ2-Φ100 mm ground, ±1 HRC
2. Heat Treatment: Where the Difficulty Lives
Cr12MoV's high chromium content gives it excellent hardenability — it will harden in air across surprisingly large sections. That is an advantage for thick parts and a problem for slender ones, because quenching produces more distortion than consumers of the grade expect.
| Stage | Temperature | Notes |
|---|---|---|
| Preheat | 550-600 °C | Essential; skipping it causes cracking on complex shapes |
| Second preheat | 800-850 °C | Recommended for sections above 30 mm |
| Austenitizing | 1000-1040 °C | Higher temperature raises hardness and lowers toughness |
| Quench | Gas or air | Air-hardening behaviour means slower quench is often enough |
| Temper | 180-200 °C × 2 | Double temper required; 500-520 °C for secondary hardening |
For long slender Cr12MoV bars, ask for vacuum gas quenching plus press straightening after tempering. Our standard supply holds 0.05 mm/300 mm, and 0.02 mm/300 mm is achievable on request with a slower cut and post-temper straightening — without any straightening the bars commonly arrive with 0.1 mm of bow.
3. Where Cr12MoV Makes Sense
Where a drawing specifies D3, SKD3 or Cr12MoV by name, this is the reference for what you are asking for. Cr12MoV is a genuinely good steel in the right application. It is a poor choice when it is used as a drop-in for a tougher grade.
| Application | Cr12MoV verdict | Reason |
|---|---|---|
| Heavy-plate blanking (4 mm+) | Good | Wear resistance with low thin-edge risk |
| Standard hardware stamping | Good | Cost advantage, adequate life |
| Simple shear blades | Good | Robust geometry tolerates lower toughness |
| Thin-stock die-cutting rules | Poor | Edges chip; use Cr8Mo2SiV instead |
| Progressive-die punches | Poor | Impact loading cracks the punch head |
| High-precision long slender rules | Poor | Distortion during hardening |
4. Total Cost, Not Purchase Price
The purchase price of Cr12MoV is typically 30-40% below Cr12Mo1V1 and roughly half of Cr8Mo2SiV. That looks decisive until you cost the failure. A chipped Cr12MoV die-cutting rule that stops a press for two hours costs more than the entire material difference on the order.
- Choose Cr12MoV when the die geometry is robust and the failure mode is wear
- Choose Cr12Mo1V1 when you need the same job done with more margin
- Choose Cr8Mo2SiV when edges are thin, stock is thin, or impact loads are present
- Never substitute Cr12MoV for a specified Cr12Mo1V1 without written agreement
Cr12MoV: frequently asked questions
No, and treating them as interchangeable causes real problems. Cr12Mo1V1 contains 1.40-1.60% carbon and 11-13% chromium with a molybdenum-vanadium balance designed for toughness. Cr12MoV runs higher carbon at 1.45-1.70%, which raises wear resistance and lowers toughness. The correct approximate equivalents are AISI D3, DIN 1.2601 and JIS SKD3.
