403 stainless steel

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Chemical Composition (%) of 403 Stainless Steel Plate
Cr Ni C Si Mn P S
11.5-13.0 0.60 0.15 0.5 1.0 0.04 0.03
Mechanical Properties of 403 Stainless Steel Plate
Tensile Strength ksi (min.) Yield Strength 0.2% Offset ksi (min.) Elongation - % in 50 mm (min.) Hardness (Rockwell B) MAX
70 30 25 98
Physical Properties of 403 Stainless Steel Plate
Denstiy lbm/in3 Coefficient of thermal Expansion (min/in)-°F thermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lbm -°F Modules of Elasticity (annealed)2-psi
at 68 °F at 68 – 212°F at 68 – 1450°F at 200°F at 32 – 212°F in tension (E)
0.276 5.5 6.6 9.3 14.4 29 x 106

This straight chromium stainless steel offers reasonable corrosion resistance and high mechanical characteristics. The 403 series offers heat resistance and a scaling temperature of about 1300°F. It is a corrosion and heat resistant 12% Cr martensitic stainless steel. This alloy offers a wide range of mechanical properties that are obtainable by appropriate heat treatments. It is easily hardened by oil, fan or air cooling and may be tempered at temperatures of up to 1350°F (732°C) to improve fracture toughness. Oil or fan cooling is required in thicker sections.

Corrosion Resistance of 403 Stainless Steel:

  • High degree of resistance to atmospheric corrosion because of its ability to form a tightly adherent oxide film
  • Maximum corrosion resistance is obtained by hardening and polishing.
  • Not recommended for use in severely corrosive environments.

Oxidation Resistance of 403 Stainless Steel:

  • Resists oxidation up to 1400°F (760°C).
  • Temperature should not exceed 1200-1300°F (649-704°C) in  continuous service.
If you are interested in other Stainless Steel Plates/Sheets, please click 302, 303, 304, 304L, 304H, 309, 309S, 310, 310S, 310H, 316, 316L, 317/317L, 317LMN, 321, 321H, 330, 347, 347H, 904L, 403, 405, 409, 410, 410S, 410/HT, 416, 416HT, 420, 422, 430, 440C, Duplex 2205, Duplex 2304, Duplex 2507.
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