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D2
Qilu
Product Description
Hot forged D2 round bar, flats and blocks, supplied annealed for machining or pre-hardened, with heat treatment and ultrasonic testing done in our own workshop.
Equivalent to: AISI D2 · DIN 1.2379 / X153CrMo12 · JIS SKD11 · GB Cr12Mo1V1
Material Steel AISI D2 SKD11 DIN 1.2379 Tool Steel Forged Ba
Material Steel AISI D2 SKD11 DIN 1.2379 Tool Steel Forged Ba
Material Steel AISI D2 SKD11 DIN 1.2379 Tool Steel Forged Ba
Supply form — Round bar, flats, plates and blocks
Process — Hot forged / hot rolled
Condition — Annealed (≤ 255 HB), or pre-hardened to 58-62 HRC
Diameter range — 10-500 mm
Standard — ASTM A681
Certificate — EN 10204 3.1 standard, 3.2 on request
Lead time — 15-30 days
D2 is the high-carbon, high-chromium cold-work tool steel from ASTM A681. The 1.4-1.6 % carbon and 11-13 % chromium form hard Cr-carbides that give it outstanding wear resistance — the standard grade for stamping and punching dies, forming rolls and cutting tools that must hold a sharp edge over long runs.
| Element | C | Mn | Si | Cr | Mo | V |
|---|---|---|---|---|---|---|
| ASTM A681 D2 | 1.40-1.60 | 0.20-0.60 | 0.10-0.60 | 11.00-13.00 | 0.70-1.20 | 0.50-1.10 |
Typical values. D2 is normally supplied annealed and hardened after rough machining.
| Property | Annealed | Hardened (typical) |
|---|---|---|
| Hardness | ≤ 255 HB | 58-62 HRC |
| Tensile strength, Rm (MPa) | — | ≈ 1800 |
| Impact, KV (J) | — | ≥ 12 |
| Wear resistance | — | Excellent |
| Standard | Designation |
|---|---|
| ASTM (USA) | D2 |
| DIN / EN (Germany/Europe) | 1.2379 / X153CrMo12 |
| JIS (Japan) | SKD11 |
| GB (China) | Cr12Mo1V1 |
| Werkstoff Nr. | 1.2379 |
Stamping — progressive stamping and blanking dies
Cutting — slitting knives, shear blades, paper and metal cutting
Forming — deep-drawing dies, forming rolls
Plastics — fiber-filled plastic mold cavities
D2 is hardened from 980-1050 °C in air or oil and tempered at 180-200 °C (low temper for max hardness) or 250-400 °C (for a toughness lift). It is air-hardening, which means minimal distortion during quench — important for precision dies. We can supply pre-hardened and rough-machined to your die-block dimensions.
Most suppliers in this business are traders who subcontract everything. We run our own processes, which means shorter cycles and one point of accountability when something needs fixing.
Heat treatment shop — quenching, tempering and vacuum heat treatment to your target hardness, with furnace charts recorded per batch
Machining shop — rough turning, peeling, milling and cutting to length, so your bar or block arrives ready for finish machining
Testing — ultrasonic per ASTM A388 / EN 10228-3, hardness mapping across the section, microstructure on request
Certification — EN 10204 3.1 as standard, 3.2 available with third-party witness (ABS, BV, CCS, GL)
Export packing — bundled, end-capped and rust-protected for sea freight
D2 has 12 % Cr and 1.5 % C for maximum wear resistance; A2 has 5 % Cr and 1 % C for better toughness at slightly lower wear. Choose D2 for long-run cutting; A2 when the die takes impact. See our A2 page.
Yes. We heat treat to 58-62 HRC, rough-machine to size and ultrasonically test. Pre-hardened blocks arrive ready for finish machining.
EN 10204 3.1 mill certificate as standard. 3.2 with third-party witness on request.
Send us your grade, dimensions, quantity, required hardness and destination port. You will get a quotation with the full technical proposal within 24 hours.
Email: enquiry@qilumetal.com | Web: www.qilumetal.com
