D3 Cold Work Tool Steel
Comparable Standards
| Designation | Standard |
| DIN W.Nr. 1.2080 | D3 |
| AISI/SAE | D3 |
| JIS | SKD11D |
Chemical Composition (wt %)
| C | Si | Mn | P (max) | S (max) | Cr |
| 1.65–2.35 | 0.10–0.40 | 0.30–0.60 | 0.03 | 0.03 | 11.0–13.0 |
Mechanical Properties
| Property | Value |
| Hardness (annealed) | ~220 HB |
| Hardness (hardened) | 60–64 HRC |
| Ultimate Tensile Strength | 1,800 MPa |
| Impact Toughness | 45 J |
Heat Treatment Guidelines
– Annealing: 760–780 °C, slow cool in furnace
– Hardening: 1000–1020 °C; oil quench
– Tempering: 150–200 °C; 2× temper cycles
Typical Applications
– Slitting shears
– Blanking tools
– Forming dies
– Straightening blades
Supply Formats & Services
– Stocked Shapes: Rounds (20 – 350 mm Ø), Flats (25 × 50 – 200 × 500 mm), Blocks (up to 2,000 kg)
– Custom Cutting: Precision bandsaw to drawing
– Value-Added Services: In-house forging & heat treatment, Ultrasonic (UT) & MPI testing, Hardness & microstructure analysis, Pre-machining & surface grinding
Certifications & Quality Assurance
– Mill-Traceable Test Certificates (EN 10204 3.1)
– Ultrasonic & MPI Reports (ASTM A388 on request)
– Hardness, Grain-Size & Decarb Analysis
– ISO 9001:2015 (certification in process)
Logistics & Enquiry
– Same-day Dispatch for stocked items from Kolkata
– 24–48 hr turnaround on custom-cut materials
– PAN-India Delivery via trusted logistics partners