ASP 23 Material Detailed Information

ASP 23 is a high-performance powder metallurgy (PM) high-speed steel developed by Bohler-Uddeholm. It belongs to the ASP (Abrasive Steel Powder) series and is equivalent to PM 23 or AISI M3:2. ASP 23 is designed for high wear resistance, excellent toughness, and good compressive strength, making it suitable for cutting tools, cold work tooling, and precision punches.

Compared to traditional high-speed steels, ASP 23 offers superior wear resistance, better grindability, and higher dimensional stability due to its fine and uniform carbide distribution from the powder metallurgy process.

Key Features

  • Exceptional Wear Resistance: Due to its high carbide content, making it perfect for cutting and stamping tools.
  • Good Toughness: Higher than ASP 60 but lower than ASP 30, allowing it to withstand moderate impact loads.
  • High Hardness (Up to 67 HRC): Ensures long tool life and superior edge retention.
  • Superior Dimensional Stability: The powder metallurgy process ensures a fine microstructure, minimizing distortion during heat treatment.

Chemical Composition

ElementComposition (%)
Carbon (C)1.28
Chromium (Cr)4.2
Molybdenum (Mo)5.0
Vanadium (V)3.1
Tungsten (W)6.4

Key Features in Composition:

  • High Carbon (C) Content: Provides excellent hardness and wear resistance.
  • Chromium (Cr) Addition: Improves corrosion resistance and strength.
  • Molybdenum (Mo) & Tungsten (W): Enhance hot hardness and toughness.
  • Vanadium (V) Content: Increases abrasion resistance by forming wear-resistant vanadium carbides.

Mechanical Properties

PropertyValue
Hardness (After Heat Treatment)64 – 67 HRC
Compressive Strength~3,000 MPa
Wear ResistanceExcellent
ToughnessHigh (Better than ASP 60)
Dimensional StabilityVery High
  • Ultra-high wear resistance → Suitable for high-speed cutting and stamping tools
  • Excellent hardness retention → Works well in high-temperature applications
  • Good toughness compared to other PM steels → Lower risk of chipping or breakage
  • Superior grindability and polishability → Ideal for precision tools

ASP 23 vs. Other Powder Metallurgy High-Speed Steels

PropertyASP 23ASP 30ASP 60M2
Hardness (HRC)64-6763-6566-6862-64
Wear ResistanceExcellentHighSuperiorModerate
ToughnessHighHigherModerateHigh
GrindabilityGoodGoodModerateModerate
ApplicationsCutting, stamping, cold work toolingHigh-impact toolsExtreme wear-resistant applicationsGeneral-purpose tooling

Why Choose ASP 23?

  • Better wear resistance than ASP 30 and M2.
  • Higher toughness than ASP 60, making it less prone to chipping.
  • Best for high-speed cutting and stamping where tool longevity is critical.

Applications

ASP 23 is widely used in high-performance tooling applications, particularly in cutting, stamping, and wear-resistant components.

Cutting Tools

  • End mills, drills, reamers, and taps
  • Broaches and gear cutting tools
  • High-performance saw blades

Cold Work Tooling

  • Punches and dies for fine blanking and stamping
  • Slitting and trimming knives
  • Powder compacting tools

Plastic Molding Applications

  • Injection mold components requiring high wear resistance
  • Shear blades and precision cutting edges

Other High-Wear Applications

  • Industrial knives and shearing blades
  • Cold forging dies
  • Metal powder compaction dies

Heat Treatment Process

Soft Annealing (For Machining, if Required)

  • Heat to 850–900°C, then slowly cool at 10–20°C per hour to 600°C before cooling to room temperature.

Hardening

  • Preheat at 600–850°C, then heat to 1,050–1,180°C for hardening, followed by vacuum, oil, or salt bath quenching.

Tempering

  • Temper at 500–560°C for 2-3 cycles to achieve an optimal hardness of 64-67 HRC.

Sub-Zero Treatment (Optional, for Maximum Hardness)

  • Can be performed at -70 to -196°C to improve wear resistance and carbide stability.

Alternative Materials

  • ASP 60 (PM60): Offers higher wear resistance but has lower toughness, making it more suitable for abrasive wear applications.
  • ASP 30: Provides higher toughness than ASP 23 but has slightly lower wear resistance.
  • M2 (HSS): A conventional high-speed steel with lower wear resistance and hardness than ASP 23, but better toughness.
  • Vanadis 23 (Uddeholm): Equivalent to ASP 23 but optimized for better production efficiency.

Conclusion

ASP 23 is a premium powder metallurgy high-speed steel offering exceptional wear resistance, high hardness (64-67 HRC), and excellent dimensional stability, making it ideal for cutting tools, cold work tooling, and precision punches.

Best Choice for: High-speed cutting, fine blanking, and high-wear applications
Why Choose ASP 23? Longer tool life, superior wear resistance, and excellent grindability compared to traditional HSS