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    Ferritic Stainless Steel


    Ferritic Stainless Steel is a chromium-based stainless steel known for its excellent corrosion resistance, high strength, and good thermal conductivity. These stainless steel grades contain low carbon content and are magnetic in nature, making them suitable for applications requiring durability and resistance to oxidation and stress corrosion cracking. Ferritic stainless steels such as ASTM 405, 409, 430, 431, 434, and 444 are widely used in automotive exhaust systems, heat exchangers, kitchen equipment, industrial machinery, construction, and petrochemical industries due to their cost-effectiveness, weldability, and reliable performance in moderate to high-temperature environments.


    Standrads and Checmical Compositions
    ASTM 405 Stainless Steel

    Carbon (C)

    Molybdenum (Mo)

    Nickel (Ni)

    Manganese (Mn)

    Iron (Fe)

    Phosphorus (P)

    Sulphur (S)

    Chromium (Cr)

    Titanium (Ti)

    Nitrogen (N)

    Niobium (Nb)

    Silicon (Si)

    0.08%

    0%

    0%

    1%

    85%

    0%

    0.04%

    12%

    0%

    0%

    0%

    1.0%
    ASTM 409 Stainless Steel

    Carbon (C)

    Molybdenum (Mo)

    Nickel (Ni)

    Manganese (Mn)

    Iron (Fe)

    Phosphorus (P)

    Sulphur (S)

    Chromium (Cr)

    Titanium (Ti)

    Nitrogen (N)

    Niobium (Nb)

    Silicon (Si)

    0.03%

    0%

    0.50%

    1%

    Balance

    0.02%

    0.04%

    10.5-11.7%

    8 x (C+N) min / 0.15–0.50

    0%

    0%

    1.0%
    ASTM 430 Stainless Steel

    Carbon (C)

    Molybdenum (Mo)

    Nickel (Ni)

    Manganese (Mn)

    Iron (Fe)

    Phosphorus (P)

    Sulphur (S)

    Chromium (Cr)

    Titanium (Ti)

    Nitrogen (N)

    Niobium (Nb)

    Silicon (Si)

    0.12%

    0%

    0-0.75%

    1%

    Balance

    0.03%

    0.04%

    16-18%

    0%

    0%

    0%

    1.0%
    ASTM 431 Stainless Steel

    Carbon (C)

    Molybdenum (Mo)

    Nickel (Ni)

    Manganese (Mn)

    Iron (Fe)

    Phosphorus (P)

    Sulphur (S)

    Chromium (Cr)

    Titanium (Ti)

    Nitrogen (N)

    Niobium (Nb)

    Silicon (Si)

    < 0.20%

    0%

    1.25-2.50%

    < 1%

    Balance

    < 0.03%

    < 0.04%

    15-17%

    0%

    0%

    0%

    < 1.0%
    ASTM 434 Stainless Steel

    Carbon (C)

    Molybdenum (Mo)

    Nickel (Ni)

    Manganese (Mn)

    Iron (Fe)

    Phosphorus (P)

    Sulphur (S)

    Chromium (Cr)

    Titanium (Ti)

    Nitrogen (N)

    Niobium (Nb)

    Silicon (Si)

    0.38-0.43%

    0.15-0.25%

    0%

    0.75% - 1.00%

    Balance

    < 0.04%

    < 0.035%

    0.80-1.10%

    0%

    0%

    0%

    0.15-0.35%
    ASTM 444 Stainless Steel

    Carbon (C)

    Molybdenum (Mo)

    Nickel (Ni)

    Manganese (Mn)

    Iron (Fe)

    Phosphorus (P)

    Sulphur (S)

    Chromium (Cr)

    Titanium (Ti)

    Nitrogen (N)

    Niobium (Nb)

    Silicon (Si)

    0%

    0%

    8.4 g/cm3

    0.10%

    58% min

    < 0.50%

    0%

    20.0–23.0%

    0%

    0%

    0%

    < 0.50%