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Excellent Product 403 Stainless Steel Bar

403 stainless steel, also known as UNS S40300, is classified as a martensitic stainless steel featuring high chromium and low carbon content. It is widely utilized in applications that demand high strength and corrosion resistance.


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    403 Stainless Steel Bar Description

    403 stainless steel bars are well-suited for use in demanding environments due to their good corrosion resistance. They also exhibit favorable mechanical properties, including high hardness, toughness, and wear resistance. However, it’s important to note that these bars may not offer the same level of corrosion resistance as other stainless steels such as 304 or 316, and may not be suitable for use in extremely corrosive environments. The presence of Nickel enables 403 stainless steel to achieve a complete austenite structure, resulting in higher strength, plasticity, toughness, excellent hot and cold workability, cold formability, and weldability. Additionally, it enhances the thermodynamic stability of 403 stainless steel.

    Product Parameters

    Product Name Excellent Product 403 Stainless Steel Bar
    Type Steel Bar
    Outer Diameter Round Bar 4mm-500mm
    Hexagon Bar 18mm-57mm (11/16″ to 2-3/4″)
    Square Bar 18mm-47mm (11/16″ to 1-3/4″)
    Flat Steel 1/2 "to 10", Thickness: 2mm-150mm, Can provide customized
    Length 1-6 meters, Length can be customized
    Standard ASTM, AISI, JIS, GB, DIN, EN, etc.
    Surface Black, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc.
    Scope of Application Stainless steel bars are used in a variety of industries such as shipbuilding, Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement, Heavy earthmoving equipment and construction, etc.

    Chemical Composition

    C Si Mn Cr Ni S P
    ≤ 0.15 ≤ 0.5 ≤1.0 11.5~13.0 ≥ 0.6 ≤ 0.03 ≤ 0.04

    Mechanical Properties

    Tensile Strength Kb (MPa) Yield Strength σ0.2 (MPa) Elongation D5 (%) Hardness
    ≥485 ≥290 ≥25 ≤ 98HRB

    Physical Performance

    Density(g/cm³) Modulus of Elasticity(Gpa) Coefficient of Thermal Expansion(10-6/°C) Coefficient of Thermal Conductivity(W/m*K) Resistivity(10-6 Ω.m)
    7.80 190 9.9 21.5 740
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