W6mo5cr4v2 Hss Properties Applications And Machining Data - China

W6Mo5Cr4V2 HSS is the shorthand often used in trade for W6Mo5Cr4V2 high speed steel, the AISI M2 equivalent that dominates the world market for general purpose cutting tools.

This article summarizes the practical data that tool designers and purchasing engineers need when specifying the grade.

Physical and Mechanical Properties:

- Density: about 8.16 g/cm3

- Annealed hardness: max 255 HB

- Hardened and triple tempered hardness: HRC 62-65

- Compression yield strength: over 3000 MPa at room temperature

- Modulus of elasticity: about 218 GPa

- Thermal expansion coefficient: approx.

11.5 x 10-6/K between 20-400C Machining Recommendations (Annealed Condition):

1 - Turning with carbide inserts: cutting speed 25-40 m/min, depth of cut 1-3mm.

2 - Drilling: use cobalt HSS drills at reduced feed, cooling with emulsion.

3 - Milling: prefer positive rake inserts, climb milling for surface finish.

4 - Grinding after heat treatment: use CBN or high-purity aluminum oxide wheels to avoid burning.

Grinding the Hardened Tool:

- Keep dressing frequency high; a glazed wheel generates heat and burns the surface.

- Depth per pass 0.005-0.01mm, generous coolant flow.

- Watch for grinding burn cracks: check with nital etch on critical tools.

Coating Options After Hardening:

- TiN general purpose, TiAlN for higher speed dry cutting, TiCN for abrasive wear.

- Coating adhesion is best after proper triple tempering and surface passivation.

W6Mo5Cr4V2 HSS Selection Tips:

- For interrupted cuts and tough applications, it outperforms higher vanadium grades like M3.

- For maximum hot hardness above 620C, consider cobalt grades M35/M42 instead.

- For mass produced drills and taps, it remains the best cost-performance choice.

Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 0086 0769 85475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

• Email:

• Website: https://songshunsteel.com/

• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
  After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter.
  
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