M35/1.3243 Spray Forming Powder Metallurgy HSS Tool Steel

Alloyed with 5% cobalt, M35 offers enhanced hot hardness and red hardness, maintaining cutting edge stability under elevated temperatures. The advanced spray forming process ensures a refined microstructure with uniformly dispersed granular carbides, contributing to excellent grindability and dimensional stability.

M35 is particularly well-suited for high-performance cutting tools, precision drills, end mills, broaches, and cold work tooling that demand consistent performance under thermal and mechanical stress.

Similar Grade

Main Chemical Composition%

Heat Treatment Process for M35 / 1.3243 Spray  Forming Powder Metallurgy HSS

1. Annealing
Slowly heat the steel to 850-900°C and hold for 2-4 hours . Then, allow the furnace to cool to below 600°C , followed by air cooling.
This process results in an annealed hardness of ≤ 280 HB , ensuring good machinability in preparation for subsequent heat treatment.

2. Hardening (Quenching)
Preheat in stages:

• First to 450-500°C

• Then to 850-900°C

• Finally, heat to the austenitizing temperature of 1180-1200°C , with an appropriate holding time depending on the cross-section size.
  
  Rapid quenching in oil, salt bath, or vacuum gas quenching is recommended to achieve a fine, uniform microstructure and optimal hardness.

3. Tempering

Tempering should be performed immediately after quenching to relieve internal stresses and enhance toughness and dimensional stability.
The recommended tempering temperature range is 540-600°C . Double or triple tempering is advised for best overall performance.

After tempering, the hardness typically reaches 64-67 HRC , depending on specific process parameters and section size.

Production process

Product Advantages of Saray Forming Steel

1. Fine grains, carbides are evenly distributed in granular form carbides.

2. Inhibit macrosegregation of alloying elements.

3. Inhibit macrosegregation of alloying elements.

4. After heat treatment, the mechanical properties are excellent, and the strength and toughnessare significantiy better than that of high-guality electroslag steel.

5. Service life close to powder steel.

6. Improve the quality of domestic materials under the premise of the same price.

7. replace and surpass imported electroslag remelting materials.

Major Equipment

1.  Electric Arc Furnace
2. ESR
3. 5T Forging Machine
4. Vacuum Annealing Furnace

5.  Non-destructive Detector
6. Rolling Mill
7. Drawing Mill
8. Spray Forming

The other steel grades that we can offer correspond to the following:

M35 / 1.3243 Spray Forming Powder Metallurgy High-Speed Steel is specially designed for demanding cutting and forming applications where excellent hot hardness, wear resistance, and toughness are essential. Its 5% cobalt content provides superior red hardness, making it ideal for high-speed operations and difficult-to-machine materials. Typical applications include:

• Broaches - For precision internal and external broaching.

• Milling Cutters - End mills, face mills are used in high-speed machining.

• Reamers & Deburring Tools - For precision finishing operations.

• Threading Tools - Taps and threading cutters for tough materials.

• Holemaking Tools - Drills and related tools for deep or high-speed drilling.

• Tooth Cutting Tools - Hobs, shaper cutters for gear production.

• Saw Blades - Machine and band saws for metal cutting.

• Stamping & Blanking Dies - Punches, fine blanking dies for cold forming.

• Pump Components - Vanes, oil pump parts, and grease nozzles.

Industries Served:
Automotive, Aerospace, General Engineering, Precision Tooling, Energy Equipment, and Heavy Machinery.

 

 

Q1: Do you accept trial orders?
A1: Yes, we accept trial orders if the exact size is in stock.

Q4: What is your product packaging like?
A4: Our products are packaged accordingly in standard industrial packaging to ensure safety during transport. If you have special packaging requirements, please specify them when placing your 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.