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| Customization: | Available |
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| Standard: | AISI, ASTM, GB, JIS, DIN |
| Technique: | Cold Work/Pre-Hardened |
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DIN 1.3343 (M2 / SKH51) high-speed steel bar is widely used for making cutting tools that require high hardness, excellent wear resistance, and good toughness. It is suitable for drills, end mills, taps, saw blades, and other precision tools. This material offers reliable edge retention and performance in both machining and mold applications. OEM sizes and custom lengths are available.
| ZEICIN Grade | GB | ASTM | JIS | DIN |
| M2 | W6Mo5Cr4V2 | M2 | SKH51 | 1.3343 |
| C | Cr | Mn | Si | Mo | V |
| 0.80-0.90 | 3.80~4.40 | 0.15-0.40 | 0.20-0.45 | 4.50-5.50 | 1.75-2.20 |
| Co | S | P | Ni | Nb | W |
| - | ≤0.030 | ≤0.030 | - | - | 5.50-6.75 |
| Process | Temperature (°C) | Soaking Time | Cooling Method | Notes |
|---|---|---|---|---|
| Annealing | ~870°C | Fully soaked | Furnace cool to ~480°C, then air cool | Approx. 241 HB hardness after anneal |
| Stress Relief | 650-680°C | 2 hours per inch thickness | Slow cooling (furnace preferred) | For unquenched material |
| Hardening | 1550 → 1850°C,then: • 2150-2200°C (for toughness)• 2250-2275°C (for hardness) | Few to 15 minutes | Oil / air / hot salt quenching | Select temp based on required property |
| Tempering | 540-565°C | 2 hours × 2-3 times | Air cool between tempers | Double temper required, triple preferred |
Main Features:
High Hardness and Wear Resistance
After proper heat treatment, this HSS bar can reach a hardness of 63-66 HRC, making it ideal for drills, taps, end mills, and other cutting tools requiring durability.
Excellent Red Hardness
Maintains hardness and strength even at elevated temperatures during high-speed cutting or machining processes.
Good Toughness and Grindability
Balanced composition offers toughness and easy grinding, suitable for precision tool manufacturing.
Standards and Grades
Equivalent to DIN 1.3343 / ASTM M2 / JIS SKH51, widely used in the tool steel industry worldwide.
Production process
Applications of M2 High Speed Tool Steel:
M2 high-speed steel is primarily used in the manufacturing of a wide range of cutting tools due to its excellent hardness, wear resistance, and toughness.
Typical applications include:
Twist drills
Reamers
Taps
Milling cutters
Broaches
Metal saw blades
Cold forming tools (e.g., extrusion punches and dies)
Punches and dies
Industrial knives
Plastic molds requiring high wear resistance
Precision screws and components
Q1: Do you accept trial orders?
A1: Yes, we accept trial orders, provided that the required size and model are in stock.
Q2: What is your delivery time?
A2: If the products are in stock, the delivery time is generally 5-15 days. If the products are out of stock, the delivery time may range from 15 to 20 days, depending on the order quantity.
Q3: Do you offer discounts for bulk orders?
A3: Yes, we offer discounts for bulk orders. The specific discount will depend on the order quantity and the terms of cooperation. Please do not hesitate to contact us for more information.
Q4: What is your product packaging like?
A4: Our products are packaged in standard industrial packaging to ensure safety during transportation. If you have specific packaging requirements, please let us know when placing the order, and we will package your items accordingly.
Q5: What payment methods do you support?
A5: We accept a variety of payment methods, including T/T, L/C, Alipay, PayPal, etc. The specific payment method can be arranged flexibly based on the order amount and customer needs.
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