SKH51/1.3343 high-speed steel plate is a durable tool steel with excellent wear and heat resistance. It is commonly used in precision tools and molds, providing long-lasting sharpness and performance for cutting, milling, and drilling applications.
| ZEICIN Grade | GB | ASTM | JIS | DIN | ISO |
| SKH51 | W6Mo5Cr4V2 | M2 | SKH51 | 1.3343 | HS6-5-2 |
| C | W | Mo | Cr | V | Co | Al | Mn | Si | S | P |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.80-0.90 | 5.50-6.75 | 4.50-5.50 | 3.80-4.40 | 1.75-2.20 | – | – | 0.15-0.40 | 0.20-0.45 | ≤0.03 | ≤0.03 |
| 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 |
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/JIS SKH51, widely used in the tool steel industry worldwide.
Exceptional Value for Money
1. Good Wear Resistance and Toughness
SKH51 / 1.3343 offers reliable wear resistance and toughness at a reasonable cost, suitable for common tooling applications.
2. Good Machinability
In annealed condition (≤280 HB), SKH51 is easy to machine before heat treatment.
Advanced Manufacturing Technology
1. Stable Production Process
Produced with mature high-speed steel manufacturing processes, ensuring consistent quality.
2. Reliable Heat Treatment Performance
After heat treatment, SKH51 achieves high hardness and good wear resistance for long tool life.
Reliable Product Quality
1. Stable Quality Control
Strict quality control ensures stable performance across batches.
2. International Standards
SKH51 / 1.3343 complies with ASTM, DIN, JIS, and GB standards.
SKH51 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
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.
