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M42 High Speed Steel M42 HSS M42 Round M42 Bars M42 High Speed Steel M42 HSS M42 Round M42 Bars M42 High Speed Steel M42 HSS M42 Round M42 Bars M42 High Speed Steel M42 HSS M42 Round M42 Bars M42 High Speed Steel M42 HSS M42 Round M42 Bars

M42 High Speed Steel M42 HSS M42 Round M42 Bars

1981.0 INR/Kilograms
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M42 High Speed Steel M42 HSS M42 Round M42 Bars Price And Quantity

  • 1981.0 INR/Kilograms
  • 1 Kilograms

Product Description

M42 High Speed Steel (AISI M42 / WNr 1.3247 / HS2-9-1-8) round bars, rods, and bar stock.

Chemical Composition

Element Min Range Max Range
Carbon (C) 1.05 1.15
Cobalt (Co) 7.75 8.75
Molybdenum (Mo) 9.00 10.00
Chromium (Cr) 3.50 4.25
Tungsten (W) 1.15 1.85
Vanadium (V) 0.95 1.35
Silicon (Si) 0.20 0.45
Manganese (Mn) 0.15 0.40
Phosphorus (P) - 0.030
Sulfur (S) - 0.030

Rod & Round Bar Supply Specifications

Parameter Standard Range / Condition
Diameter Range (Hot Rolled) 10 mm to 120 mm
Diameter Range (Forged) 80 mm to 350 mm
Diameter Range (Cold Drawn / Ground Rods) 2 mm to 30 mm
Standard Lengths 2000 mm to 6000 mm or custom cut-to-length
Surface Finish Conditions Black Surface, Turned, Peeled, Centerless Ground, Bright Polished
Dimensional Tolerances ISO h8, h9, h11, DIN 175
Delivery Hardness (Annealed) Max 269 HB / 28 HRC

Physical & Mechanical Properties

Property Value Unit
Density 7.81 g/cm³
Modulus of Elasticity 220 GPa
Thermal Conductivity (20°C) 20.0 W/m·K
Thermal Expansion Coefficient (20-100°C) 11.0 x 10⁻⁶ /K
Achievable Hardened Hardness 67 - 70 HRC
Yield Strength (Hardened & Tempered) 2500 MPa

Heat Treatment Processing

Process Temperature Range (°C) Cooling Medium / Strategy
Soft Annealing 840 - 870 Slow furnace cool (10°C per hour to 600°C, then air cool)
Stress Relieving 650 - 700 Slow furnace cool
Preheating 820 - 850 Equalize thoroughly before hardening
Hardening (Austenitizing) 1170 - 1200 Oil, Salt Bath (550°C), or Vacuum / Gas Quench
Tempering 520 - 550 Minimum 3 cycles (1 to 2 hours per cycle), air cool to room temp

International Standard Equivalents

Country / Standard System Standard Designation Material Number / Grade
USA (AISI / ASTM) AISI M42 / ASTM A600 T11342
Germany (DIN / WNr) DIN 17350 1.3247 / S 2-10-1-8
European Union (EN ISO) EN ISO 4957 HS2-9-1-8
Japan (JIS) JIS G4403 SKH59
China (GB) GB/T 9943 W2Mo9Cr4VCo8
Russia (GOST) GOST 19265 R2M9K8
France (AFNOR) NF A35-590 Z110WKCV09-08-04-02-01

Key Applications for M42 Round Bars & Rods

  • High-Speed Heavy Machining: End mills, twist drills, taps, broaches, gear hobs, and reamers for hard-to-machine superalloys.

  • Aerospace & Defense: Machining nickel-based alloys (Inconel), titanium alloys, stainless steels, and heat-treated high-strength steels.

  • Industrial Saw Blades: Bimetal bandsaw blades, circular saw blades, and cold saws operating at high cutting speeds.

  • Cold Work Tooling: High-wear punches, forming dies, and thread rolling dies requiring extreme hot hardness.

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