Home Products Steels and Alloys High-Speed Steels

ARK J31

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Description

High-speed alloyed steel used in high-wear parts such as lathe tools and dies. It has a high resistance to wear, good toughness and dimensional stability. Its mechanical properties can be improved with hardening treatment. Nitriding will favour wear and oxidation resistance.

Main applications

  • Milling and lathe tools
  • Punches and dies
  • Threading dies and taps
  • Helical drills
  • Wood work tools

Delivery status

Annealed

Hardness of the supply

  • Min: -
  • Med: -
  • Max: 269 HB
  • Composition
  • Services
  • Heat Treatments
  • Download

Standards

  • EN: HS 6-5-2C
  • AISI: (M2 C)
  • DIN: S 6-5-2
  • W.Nr.: 1.3343
  • Supply: EN ISO 4957

Profiles available

Thickness Tolerance
Round 10 - 102 mm EN 10060
Square On Request EN 10059
Rectangular On Request EN 10058

Chemical composition (%) 1

Min Med Max
C
0,86 0,94
Si
0,45
Mn
0,40
Cr
3,80 4,50
Mo
4,70 5,20
V
1,70 2,10
W
5,90 6,70

Physical properties

Density : 8,10
10ˉ⁶m/mK
20 a 100 ⁰C 20 a 200 ⁰C 20 a 300 ⁰C 20 a 400 ⁰C 20 a 500 ⁰C 20 a 600 ⁰C 20 a 700 ⁰C
11,5 11,7 12,20 12,40 12,70 13,00 ---
Thermal Conductivity W/mk
20 ⁰C 200 ⁰C 300 ⁰C 350 ⁰C 400 ⁰C 600⁰C 700 ⁰C
22 --- --- --- --- --- ---
GPa
-100 ⁰C 0 ⁰C 20 ⁰C 100 ⁰C 200 ⁰C 300 ⁰C 400 ⁰C 500 ⁰C 600 ⁰C
--- --- 219 --- --- --- --- --- ---

Mechanical properties

Condition Ø Thickness Mechanical properties
Hardness Rm Rp0,2 ReH A Z RC
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -

Notes on mechanical properties

The hardness value is part of the specification of the material.

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Updated on: 09.05.2022
  • Composition

    Standards

    • EN: HS 6-5-2C
    • AISI: (M2 C)
    • DIN: S 6-5-2
    • W.Nr.: 1.3343
    • Supply: EN ISO 4957

    Profiles available

      • Round
      • 10 - 102 mm
      • EN 10060
      • Square
      • On Request
      • EN 10059
      • Rectangular
      • On Request
      • EN 10058

    Chemical composition (%) 1

    Min Med Max
    C
    0,86 0,94
    Si
    0,45
    Mn
    0,40
    Cr
    3,80 4,50
    Mo
    4,70 5,20
    V
    1,70 2,10
    W
    5,90 6,70

    Physical properties

    Density : 8,10
    10ˉ⁶m/mK
    20 a 100 ⁰C 11,5
    20 a 200 ⁰C 11,7
    20 a 300 ⁰C 12,20
    20 a 400 ⁰C 12,40
    20 a 500 ⁰C 12,70
    20 a 600 ⁰C 13,00
    20 a 700 ⁰C ---
    Thermal Conductivity W/mk
    20 ⁰C 22
    200 ⁰C ---
    300 ⁰C ---
    350 ⁰C ---
    400 ⁰C ---
    600⁰C ---
    700 ⁰C ---
    GPa
    -100 ⁰C ---
    0 ⁰C ---
    20 ⁰C 219
    100 ⁰C ---
    200 ⁰C ---
    300 ⁰C ---
    400 ⁰C ---
    500 ⁰C ---
    600 ⁰C ---

    Mechanical properties

    Please refer to the table in the downloads section.

    Notes on mechanical properties

    The hardness value is part of the specification of the material.

  • Services
  • Heat Treatments
  • Download

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Hardness HB

80
500

Hardness HRC

70
58 – 64

Resistance to abrasive wear

100
80

Resistance to adhesive wear

100
55

Resistance to tempering

100
75

Resistance to heat wear

100
75

Resistance to fatigue

100
50

Compressive strength

100
85

Toughness

100
25

Ductility

100
23

Corrosion resistance

100
25

Machinability

100
35

Suitability for welding

100
5

Suitability for polishing

100
30

Thermal fatigue

100
65

Suitability for nitriding

100
60

Suitability for texture

100
35

Number of cycles (Durability)

100
60

Creep resistance

100
30

Hardenability

100
60
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