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RK 445

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Main applications

  • Tube for shock absorbers and for hydraulic cylinders

Delivery status

Rectificado interior (ISO h8)

Hardness of the supply

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

Profiles available

Thickness Tolerance
Tube D.Ext 50 - 190 mm EN 10305-1

Chemical composition (%) 1

Min Med Max
C
0,22
Si
0,55
Mn
1,60
P
0,025
S
0,025

Physical properties

Density : 7,85
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
11,1 12,1 12,90 --- --- --- ---
Thermal Conductivity W/mk
20 ⁰C 200 ⁰C 300 ⁰C 350 ⁰C 400 ⁰C 600⁰C 700 ⁰C
54 --- --- --- --- --- ---
GPa
-100 ⁰C 0 ⁰C 20 ⁰C 100 ⁰C 200 ⁰C 300 ⁰C 400 ⁰C 500 ⁰C 600 ⁰C
--- --- 210 205 197 190 --- --- ---

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 - - - - - - - - -

Please refer to the table in the downloads section.

Notes on mechanical properties

ReH e A% fazem parte da especificação do material.

You can print this information
Updated on: 03.10.2022
  • Composition

    Profiles available

      • Tube
      • D.Ext 50 - 190 mm
      • EN 10305-1

    Chemical composition (%) 1

    Min Med Max
    C
    0,22
    Si
    0,55
    Mn
    1,60
    P
    0,025
    S
    0,025

    Physical properties

    Density : 7,85
    10ˉ⁶m/mK
    20 a 100 ⁰C 11,1
    20 a 200 ⁰C 12,1
    20 a 300 ⁰C 12,90
    20 a 400 ⁰C ---
    20 a 500 ⁰C ---
    20 a 600 ⁰C ---
    20 a 700 ⁰C ---
    Thermal Conductivity W/mk
    20 ⁰C 54
    200 ⁰C ---
    300 ⁰C ---
    350 ⁰C ---
    400 ⁰C ---
    600⁰C ---
    700 ⁰C ---
    GPa
    -100 ⁰C ---
    0 ⁰C ---
    20 ⁰C 210
    100 ⁰C 205
    200 ⁰C 197
    300 ⁰C 190
    400 ⁰C ---
    500 ⁰C ---
    600 ⁰C ---

    Mechanical properties

    Please refer to the table in the downloads section.

    Notes on mechanical properties

    ReH e A% fazem parte da especificação do material.

  • Services
  • Heat Treatments
  • Download

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Hardness HB

500
170 – 210

Hardness HRC

70
20

Resistance to abrasive wear

100
5

Resistance to adhesive wear

100
5

Resistance to tempering

100
10

Resistance to heat wear

100
10

Resistance to fatigue

100
10

Compressive strength

100
15

Toughness

100
25

Ductility

100
35

Corrosion resistance

100
5

Machinability

100
60

Suitability for welding

100
100

Suitability for polishing

100
2

Thermal fatigue

100
5

Suitability for nitriding

100
15

Suitability for texture

100
15

Number of cycles (Durability)

100
15

Creep resistance

100
15

Hardenability

100
5
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