S31803 / COLDUPLEX Duplex Stainless Steel

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Description

1.4462 (X2CrNiMoN22-5-3) is the basic grade of duplex stainless steel based on a 22% chromium and 5% nickel content. It is suitable for applications which involve high mechanical stresses and severe corrosion conditions, particularly where there is frequent contact with high levels of chlorides, carbon dioxide and hydrogen sulphide as may be encountered in the gas, petrochemical and offshore industries. Columbia Metals stocks S31803 in the solution treated and quenched condition. It shows the following features and properties:


  • High strength levels
  • Very good resistance to pitting and crevice corrosion
  • High resistance to stress corrosion cracking, fatigue and erosion
  • Excellent resistance to chloride stress corrosion cracking
  • Good workability and weldability
  • Related Standards

    Equivalent Materials

    Los datos sobre este material han sido proporcionados por Matmatch.

    A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
    Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

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    Propiedades

    General

    PropertyTemperatureValue

    Densidad

    23.0 °C

    7.8 g/cm³

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    Mecánica

    PropertyTemperatureValueComment

    Coeficiente de Poisson

    23.0 °C

    0.32 [-]

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    Dureza Brinell

    23.0 °C

    270 [-]

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    max.

    Elongación

    23.0 °C

    25 %

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    Límite elástico Rp 0,2

    23.0 °C

    448 MPa

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    Módulo de cizallamiento

    23.0 °C

    75 GPa

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    Módulo elástico

    23.0 °C

    199 GPa

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    Resistencia a la tracción

    23.0 °C

    620 MPa

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    Aplicaciones térmicas

    PropertyTemperatureValueComment

    Calor específico

    23.0 °C

    425 J/(kg·K)

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    Coeficiente de dilatación térmica

    23.0 °C

    1.11E-5 1/K

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    for 20-100°C

    Conductividad térmica

    23.0 °C

    14 W/(m·K)

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    for 20-300°C

    Eléctrico

    PropertyTemperatureValue

    Resistividad eléctrica

    23.0 °C

    8E-7 Ω·m

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    Magnético

    PropertyTemperatureValue

    Permeabilidad magnética relativa

    23.0 °C

    33 [-]

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    Chemical properties

    PropertyValueComment

    Azufre

    0.02 %

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    max.

    Carbono

    0.03 %

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    max.

    Cromo

    21 - 23 %

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    Fósforo

    0.02 %

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    max.

    Hierro

    Balance

    Manganeso

    2 %

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    max.

    Molibdeno

    2.5 - 3.5 %

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    Nitrógeno

    0.08 - 0.2 %

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    Níquel

    4.5 - 6.5 %

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    Silicona

    1 %

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    max.

    Technological properties

    Property
    Application areas

    Offshore & marine: Offshore pipework, components for gas, oil and process cooling plants, wellhead and subsea wellhead fittings, desalination plant, seawater cooled heat exchangers and high strength fasteners;Chemical processing: Chemical tanks, flue gas filters, acetic acid distillation parts and heat exchangers

    Corrosion properties

    Very good corrosion resistance

    General machinability

    Good workability