TOOL & DIE STEEL
High Performance High-Speed Steel (HSS), Cold Work, Hot Work & Plastic Mold Steel Engineering Grades
High Wear & Impact Resistance
Red Hardness & High Temp Strength
Excellent Machinability & Toughness
Vacuum Degassed & EAF Refined
Powder Metallurgy Options
Ready Stock
TOOL & DIE STEEL SUPPLIER IN MUMBAI
High-carbon and alloy steels known as “tool steels” are frequently used to create cutters, reamers, bits, and other items needed to machine metals, plastics, and wood. Tool steels typically include cobalt or nickel to improve strength and performance at high temperatures, and carbide formers for increased wear resistance, including chromium, vanadium, molybdenum, and tungsten in various combinations. Most tool steel is produced in electric arc furnaces, where it is melted, purified, brought to the correct composition, then poured into ingots, cooled, and annealed to prepare it for further processing. Some tool steels are produced by powder metallurgy or other specialized processes.
MAIN USES OF HIGH SPEED STEEL:
They are mainly used to manufacture various cutting tools: drills, taps, milling cutters, drill and tool bits, hobbing (gear) cutters, power saw blades, planer and jointer blades, router bits, punches and dies.
High-speed steel (HSS) is made from 40+ tool steel alloys consisting of carbon steel, alloyed with more than 7% tungsten or molybdenum, and percentages of chromium-vanadium and cobalt. Its carbon content is about 0.7%–1.65%, and the alloy content is about 10%–25%.
ROUND BARS
HEXAGONAL BARS
SQUARE BARS & BITS
TOOL & DIE GRADES CLASSIFICATION
CATEGORIES OF TOOL & DIE STEEL
Tool steels are broadly categorized by application and operating environment into High-Speed Steel, Hot Work Die Steel, Cold Work Die Steel, Plastic Mold Steel, and Shock-Resisting Tool Steel.
HIGH-SPEED STEEL (HSS)
- Grades M2, M35, M42, T1, T4, ASP 30
- High Red Hardness & Thermal Wear Resistance
- Tungsten, Molybdenum & Cobalt Alloyed
- Drills, Milling Cutters, Hobs, Taps & Tool Bits
HOT WORK & COLD WORK DIE STEEL
- Hot Work: H11, H12, H13, H21, DIN 2714, DIN 2714+Ni, DB5, DB6
- Cold Work: D2 (KNL / 1.2379 / SKD11), D3, WPS, OHNS O1/O2, A2
- Thermal Fatigue, Impact & Abrasion Resistance
- Forging Dies, Press Tools, Blanking & Shearing
PLASTIC MOLD & SHOCK RESISTING STEEL
- Mold Steel: P20, P20+Ni, M200, M300
- Shock Resisting: S1, S7
- Superior Polishability & High Toughness
- Plastic Injection Molds, Heavy Punches & Chisels
INDUSTRIAL ADAPTABILITY
APPLICATIONS OF TOOL & DIE STEEL
Tool & Die steels power high-precision manufacturing, metal machining, die-casting, extrusion, and plastic injection molding worldwide.
CUTTING TOOLS (Drills, Taps, Hobs)
PUNCHING & FORMING DIES
HOT FORGING & DIE-CASTING MOULDS
PLASTIC INJECTION MOLDING
COLD HEADING & BLANKING DIES
SHEAR BLADES & SLITTERS
AEROSPACE PRECISION TOOLING
HEAVY SHOCK PUNCHES & CHISELS
GRADE FINDER
TOOL & DIE STEEL GRADES AVAILABLE
Use the options below to filter by tool steel series, search specific grades, and request quick rates.
DATA SHEET
TECHNICAL INFORMATION
Detailed metallurgical specifications, chemical compositions, mechanical properties, and available sizes of our Tool & Die steel products.
Typical chemical compositions of prominent Tool & Die Steel grades supplied by Steel Mart:
| Grade | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Tungsten (W) / Co |
|---|---|---|---|---|---|
| M2 (HSS) | 0.85 – 0.95 % | 3.80 – 4.50 % | 4.70 – 5.20 % | 1.70 – 2.10 % | 5.90 – 6.70 % W |
| M35 (HSS + 5% Co) | 0.88 – 0.96 % | 3.80 – 4.50 % | 4.70 – 5.20 % | 1.70 – 2.10 % | 6.00% W, 4.75–5.25% Co |
| H13 (Hot Work) | 0.32 – 0.45 % | 4.75 – 5.50 % | 1.10 – 1.75 % | 0.80 – 1.20 % | - |
| D2 / 1.2379 (Cold Work) | 1.40 – 1.60 % | 11.0 – 13.0 % | 0.70 – 1.20 % | 0.70 – 1.10 % | - |
| P20 (Plastic Mold) | 0.28 – 0.40 % | 1.40 – 2.00 % | 0.30 – 0.55 % | - | - |
| Grade & Category | Working Hardness (HRC) | Annealed Hardness (HB Max) | Thermal Resistance | Wear Resistance |
|---|---|---|---|---|
| M2 / M35 (HSS) | 62 – 66 HRC | 269 HB | Very High (Red Hardness) | Exceptional |
| H13 (Hot Work) | 46 – 54 HRC | 235 HB | High Thermal Shock | High |
| D2 / D3 (Cold Work) | 58 – 62 HRC | 255 HB | Moderate | Extreme Abrasion |
| OHNS O1 / O2 | 58 – 62 HRC | 220 HB | Moderate | High Precision |
| P20 / P20+Ni | 28 – 34 HRC (Pre-hardened) | 300 HB | Good Mold Toughness | Good Polishability |
Round Bars: 10 mm to 550 mm diameter in ready stock.
Hexagonal Bars: 10 mm to 85 mm A/F.
Square Bars & Tool Bits: 10 mm to 200 mm A/F.
We supply Tool & Die Steel products in multiple finish conditions depending on application demands:
- Annealed Black Forged / Rolled: Soft annealed condition straight from forging press/mill for easy rough machining.
- Peeled & Turned Bright: Machined surface with smooth outer surface tolerances for tool fabrication.
- Pre-Hardened (P20): Supplied at 28-34 HRC ready for direct CNC mold cavity machining without further heat treatment.
Recommended heat treatment procedures for optimum hardness, red-hardness, and toughness in Tool & Die Steels:
- Preheating: Multi-stage preheating at 550°C and 850°C to minimize distortion.
- Austenitizing & Quenching: Heat to 1000°C–1220°C (depending on HSS vs Die grade), vacuum or oil quench.
- Multiple Tempering: Double or triple tempering at 520°C–560°C to eliminate residual stress and achieve target HRC hardness.
Key industrial applications for tool and die steel grades:
- High-Speed Steel (M2, M35, M42, T1, T4, ASP30): Drills, taps, milling cutters, gear hobs, saw blades, router bits, punches.
- Hot & Cold Work Die Steels (H13, D2, D3, DB6, OHNS): Hot forging dies, aluminum extrusion dies, cold blanking press tools, shear blades.
- Plastic Mold & Shock Steels (P20, S7, M200): Plastic injection mold bases, automotive bumper dies, heavy shock chisels.
| American (AISI) | German (DIN / W-Nr) | Japanese (JIS) | Bohler Equivalent |
|---|---|---|---|
| M2 | 1.3343 / HS 6-5-2 | SKH 51 | S600 |
| H13 | 1.2344 / X40CrMoV5-1 | SKD 61 | W302 |
| D2 | 1.2379 / X153CrMoV12 | SKD 11 | K110 / KNL |
| P20 | 1.2311 / 40CrMnMo7 | PX 5 | M201 |
STEEL MART ADVANTAGE
WHY CHOOSE STEEL MART
Over 40 years of engineering supply chain leadership in industrial steel and tool & die steel stockholding.
40+ YEARS EXPERIENCE
Decades of metallurgical expertise providing premium metals and forgings since 1986.
READY STOCK
Huge warehouse inventory of standard configurations and diameters for immediate loading.
WORLDWIDE EXPORT
Trusted supplier shipping material batches across European, Middle Eastern, and Asian markets.
FAST DELIVERY
Optimized logistics networks ensuring secure and rapid material transit across India and globally.
NEED HELP SELECTING THE RIGHT TOOL & DIE STEEL GRADE?
Our engineering team is here to assist you in selecting the ideal tool steel or die steel grade for your specific machining, heat resistance, toughness, and wear requirements.