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FR 3

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Description

Chromium-nickel-molybdenum steel treated for higher stress applications than carbon building steels. Nitriding significantly improves its resistance to wear and fatigue.

Main applications

  • Machine Parts
  • Shafts
  • Torsion and Flexing Shafts
  • Toothed Wheels
  • Worms
  • Bolts
  • Screws
  • Nuts and Bolts

Delivery status

Treated

Hardness of the supply

  • Min: -
  • Med: -
  • Max: 300 HB
  • Composition
  • Services
  • Heat Treatments
  • Download

Profiles available

Thickness Tolerance
Round 14 - 230 mm EN 10060

Chemical composition (%) 1

Min Med Max
C
0,30 0,38
Si
0,40
Mn
0,50 0,80
P
0,025
S
0,035
Cr
1,30 1,70
Mo
0,15 0,30
Ni
1,30 1,70

Physical properties

Density : 7,84
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
12,1 12,7 13,2 13,6 --- --- ---
Thermal Conductivity W/mk
20 ⁰C 200 ⁰C 300 ⁰C 350 ⁰C 400 ⁰C 600⁰C 700 ⁰C
33,7 --- --- --- --- --- ---
GPa
-100 ⁰C 0 ⁰C 20 ⁰C 100 ⁰C 200 ⁰C 300 ⁰C 400 ⁰C 500 ⁰C 600 ⁰C
--- --- 210 --- --- --- --- --- ---

Notes on physical properties

Rm - Tensile Strength Rp0.2 - Tension at the Conventional Yield Limit 0.2% A - Elongation after Break

Mechanical properties

Condition Ø Thickness Mechanical properties
Hardness Rm Rp0,2 ReH A Z RC
Hardened and tempered < 16 - - - - - - -
Drawn (+C) < 16 - - - - - - -
Ground (+SH) < 16 - - - - - - -
N/A < 16 - - - - - - -
Hardened and tempered < 40 - - - - - - -
Drawn (+C) < 40 - - - - - - -
Ground (+SH) < 40 - - - - - - -
N/A < 40 - - - - - - -
Hardened and tempered < 100 - - - - - - -
Drawn (+C) < 100 - - - - - - -
Ground (+SH) < 100 - - - - - - -
N/A < 100 - - - - - - -
Hardened and tempered < 160 - - - - - - -
Drawn (+C) < 160 - - - - - - -
Ground (+SH) < 160 - - - - - - -
N/A < 160 - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -

Notes on mechanical properties

Rm, Rp0.2 and A% are part of the specification of the material.

You can print this information
Updated on: 13.04.2023
  • Composition

    Profiles available

      • Round
      • 14 - 230 mm
      • EN 10060

    Chemical composition (%) 1

    Min Med Max
    C
    0,30 0,38
    Si
    0,40
    Mn
    0,50 0,80
    P
    0,025
    S
    0,035
    Cr
    1,30 1,70
    Mo
    0,15 0,30
    Ni
    1,30 1,70

    Physical properties

    Density : 7,84
    10ˉ⁶m/mK
    20 a 100 ⁰C 12,1
    20 a 200 ⁰C 12,7
    20 a 300 ⁰C 13,2
    20 a 400 ⁰C 13,6
    20 a 500 ⁰C ---
    20 a 600 ⁰C ---
    20 a 700 ⁰C ---
    Thermal Conductivity W/mk
    20 ⁰C 33,7
    200 ⁰C ---
    300 ⁰C ---
    350 ⁰C ---
    400 ⁰C ---
    600⁰C ---
    700 ⁰C ---
    GPa
    -100 ⁰C ---
    0 ⁰C ---
    20 ⁰C 210
    100 ⁰C ---
    200 ⁰C ---
    300 ⁰C ---
    400 ⁰C ---
    500 ⁰C ---
    600 ⁰C ---

    Notes on physical properties

    Rm - Tensile Strength Rp0.2 - Tension at the Conventional Yield Limit 0.2% A - Elongation after Break

    Mechanical properties

    Please refer to the table in the downloads section.

    Notes on mechanical properties

    Rm, Rp0.2 and A% are part of the specification of the material.

  • Services
  • Heat Treatments
  • Download

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Hardness HB

Hardness HRC

Resistance to abrasive wear

Resistance to adhesive wear

Resistance to tempering

Resistance to heat wear

Resistance to fatigue

Compressive strength

Toughness

Ductility

Corrosion resistance

Machinability

Suitability for welding

Suitability for polishing

Thermal fatigue

Suitability for nitriding

Suitability for texture

Number of cycles (Durability)

Creep resistance

Hardenability

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