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AISI 303 (1.4305)

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Description

Most used stainless steel of all easy cutting steels. It offers good mechanical and corrosion resistance and high machinability. Resistance to hot oxidation runs at 850 °C. It is not suitable for welding due to the high presence of sulphur in its composition, it can precipitate in the grain boundaries, weakening and making the welded joints fragile. It is not possible to harden this material by quenching treatment.

Main applications

  • Shafts and Spindles
  • Bolts and nuts
  • Bolts and Wrenches

Delivery status

Austenitic

Hardness of the supply

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

Profiles available

Thickness Tolerance
Round 5 - 65 mm EN 10060
Hexagonal 11 - 41 mm EN 10061

Chemical composition (%) 1

Min Med Max
C
0,10
Si
1,00
Mn
2,00
P
0,045
S
0,15 0,350
Cr
17,00 19,00
Ni
8,00 10,00

Physical properties

Density : 7,90
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
16 16,5 17,00 17,50 18,00 --- ---
Thermal Conductivity W/mk
20 ⁰C 200 ⁰C 300 ⁰C 350 ⁰C 400 ⁰C 600⁰C 700 ⁰C
15,00 --- --- --- --- --- ---
GPa
-100 ⁰C 0 ⁰C 20 ⁰C 100 ⁰C 200 ⁰C 300 ⁰C 400 ⁰C 500 ⁰C 600 ⁰C
--- --- 200 194 186 179 172 165 ---

Mechanical properties

Condition Ø Thickness Mechanical properties
Hardness Rm Rp0,2 ReH A Z RC
Hardened and tempered ≤ 10 - - - - - - -
Drawn (+C) ≤ 10 - - - - - - -
Ground (+SH) ≤ 10 - - - - - - -
N/A ≤ 10 - - - - - - -
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 ≤ 63 - - - - - - -
Drawn (+C) ≤ 63 - - - - - - -
Ground (+SH) ≤ 63 - - - - - - -
N/A ≤ 63 - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -
Hardened and tempered - - - - - - - - -
Drawn (+C) - - - - - - - - -
Ground (+SH) - - - - - - - - -
N/A - - - - - - - - -

Notes on mechanical properties

Rp0

You can print this information
Updated on: 18.04.2022
  • Composition

    Profiles available

      • Round
      • 5 - 65 mm
      • EN 10060
      • Hexagonal
      • 11 - 41 mm
      • EN 10061

    Chemical composition (%) 1

    Min Med Max
    C
    0,10
    Si
    1,00
    Mn
    2,00
    P
    0,045
    S
    0,15 0,350
    Cr
    17,00 19,00
    Ni
    8,00 10,00

    Physical properties

    Density : 7,90
    10ˉ⁶m/mK
    20 a 100 ⁰C 16
    20 a 200 ⁰C 16,5
    20 a 300 ⁰C 17,00
    20 a 400 ⁰C 17,50
    20 a 500 ⁰C 18,00
    20 a 600 ⁰C ---
    20 a 700 ⁰C ---
    Thermal Conductivity W/mk
    20 ⁰C 15,00
    200 ⁰C ---
    300 ⁰C ---
    350 ⁰C ---
    400 ⁰C ---
    600⁰C ---
    700 ⁰C ---
    GPa
    -100 ⁰C ---
    0 ⁰C ---
    20 ⁰C 200
    100 ⁰C 194
    200 ⁰C 186
    300 ⁰C 179
    400 ⁰C 172
    500 ⁰C 165
    600 ⁰C ---

    Mechanical properties

    Please refer to the table in the downloads section.

    Notes on mechanical properties

    Rp0

  • 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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