DC53
Qilu
7228400000
Product Description
Hot forged DC53 round bar, flats and blocks, supplied annealed for machining or pre-hardened to 60-63 HRC, with heat treatment and ultrasonic testing done in our own workshop.
Equivalent to: JIS DC53 (Daido) · modified D2 with lower carbon for higher toughness
JIS DC53 Cold Work Tool Steel
JIS DC53 Cold Work Tool Steel
JIS DC53 Cold Work Tool Steel
Supply form — Round bar, flats and blocks
Process — Hot forged / hot rolled
Condition — Annealed (≤ 255 HB), or pre-hardened to 60-63 HRC
Diameter range — 10-400 mm
Standard — JIS G4404 (DC53)
Certificate — EN 10204 3.1 standard, 3.2 on request
Lead time — 15-30 days
DC53 is a modern Japanese cold-work tool steel (Daido) developed as an improvement on D2. The lower carbon and higher molybdenum give the same 60+ HRC hardness as D2 with measurably better toughness and less carbide segregation — the choice for progressive stamping and fine-blanking dies where D2 would chip.
| Element | C | Si | Mn | Cr | Mo | V |
|---|---|---|---|---|---|---|
| DC53 (typical) | ~1.00 | ~0.30 | ~0.40 | ~8.00 | ~2.00 | ~0.28 |
Typical values. DC53 reaches D2 hardness with higher toughness.
| Property | Annealed | Hardened (typical) |
|---|---|---|
| Hardness | ≤ 255 HB | 60-63 HRC |
| Tensile strength, Rm (MPa) | — | ≈ 1800 |
| Impact, KV (J) | — | ≥ 25 (higher than D2) |
| Machinability | — | Better than D2 |
| Standard | Designation |
|---|---|
| JIS (Japan) | DC53 |
| Origin | Daido Steel (improved D2) |
| Related | ~D2 family, lower C / higher Mo |
| ASTM (USA) | no exact equivalent |
| Werkstoff Nr. | — |
Stamping — progressive stamping and fine-blanking dies
Cutting — slitting and shearing tools
Forming — drawing and forming dies
Plastics — mold cavities for abrasive plastics
DC53 is hardened from 1020-1040 °C in air or gas and tempered at 200-220 °C (for max hardness) or 500-520 °C (high-temp temper for toughness). The high-temperature temper option transforms retained austenite and lifts impact toughness above D2 — a key reason DC53 replaces D2 in chipping-prone service.
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
DC53 reaches the same 60+ HRC as D2 but with higher toughness and less carbide banding — dies chip less and last longer in chipping-prone progressive stamping and fine blanking. DC53 also machines better in the annealed condition. See our D2 page.
Yes. We heat treat to 60-63 HRC, rough-machine to size and ultrasonically test. High-temperature tempering is available for maximum toughness.
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
