DIN 2080 · AISI D3 · AFNOR Z210CW12-01 · X210CR12
High-carbon, high-chromium cold work tool steel with excellent wear resistance, edge retention, and hardness. Widely used for blanking, forming, and trimming dies across multiple industries.
D3 is a high-carbon, high-chromium cold work tool steel valued for its outstanding wear resistance and edge retention. With approximately 2% carbon and 12% chromium, it delivers exceptional hardness (58–64 HRC) making it suitable for demanding cold forming applications.
This grade is ideal for all types of cold forming and drawing dies, powder metallurgy tooling, blanking and trimming dies, cold shear blades, punches, ejector pins, and forming rolls. It also performs well in sheet cutting tools, rotary shear knives, and trimming dies for paper and plastics.
| C | Si | Mn | P | S | Cr | V |
|---|---|---|---|---|---|---|
| 2.00 - 2.35 | 0.10 - 0.60 | 0.10 - 0.60 | 0.03 max | 0.03 max | 11.0 - 13.0 | 1.00 |
| Impact Toughness | 28 J/cm² |
| Hardness | 58–64 HRC |
| Poisson’s Ratio | 0.27–0.30 |
| Modulus of Elasticity | 190–210 GPa |
| Temperature Range | Coefficient |
|---|---|
| 20–100°C | 10.7 × 10⁻² m/(m·K) |
| Temperature | W/(m·K) |
|---|---|
| 20°C | 16.6 |
| 350°C | 20.5 |
| 700°C | 24.3 |
Proper heat treatment ensures D3 achieves optimal hardness and wear resistance.
| Process | Temperature | Cooling | Result |
|---|---|---|---|
| Soft Annealing | 810–850°C | Furnace | Max 250 HB |
| Stress-Relief Annealing | 670–720°C | Furnace | — |
| Hardening (Oil) | 940–970°C | Oil | 64.5 HRC |
| Hardening (Air, ≤30mm) | 950–980°C | Air | 64.5 HRC |
| Forging | 1050–1100°C (preheat 900–950°C) | Slow cool | — |
| Annealing | 900°C, soak 3–4 hrs | Furnace cool | — |
Tempering temperature range: 100–600°C. Resulting hardness: 63.5 HRC at 100°C down to 47 HRC at 600°C. Select tempering temperature based on application requirements for the optimal balance of hardness and toughness.
Preheat to 900–950°C, then increase to 1050–1100°C for working temperature. Cool slowly after forging to avoid stress buildup. Always anneal post-forging.
D3 tool steel is supplied in flat, square, and round bars of all standard and custom sizes.
Flats
Squares
RoundsTell us the application, required properties, and quantities. We’ll confirm supply capability and walk you through our process.