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Stainless Steel Alloy 403 | UNS# S40300

Stainless Steel Alloy 403: forms, specifications and uses

Stainless Steel Alloy 403 is a straight chromium stainless steel that demonstrates reasonable corrosion resistance, high mechanical characteristics, and offers heat resistance and a scaling temperature of about 1300°F. 304 is corrosion and heat resistant martensitic stainless steel that offers a wide range of mechanical properties obtainable by appropriate heat treating.

Stainless Steel product forms offered at all Titanium Industries locations include Stainless Steel Round Bar and Stainless Steel Hex Bar.

Typical uses of Stainless Steel Alloy 403 include compressor blades and turbine parts.

For Stainless Steel Alloy 403, request a quote online or contact your nearest Titanium Industries location. Alloy data on this page is for reference only, not for design.

Round bar, one of the stainless steel product forms Titanium Industries stocks, for Stainless Steel Alloy 403

Stainless Steel Alloy 403 is a straight chromium stainless steel that demonstrates reasonable corrosion resistance, high mechanical characteristics, and offers heat resistance and a scaling temperature of about 1300°F. 304 is corrosion and heat resistant martensitic stainless steel that offers a wide range of mechanical properties obtainable by appropriate heat treating. Easily hardened by oil, fan or air cooling and can be tempered at temperatures at 1350°F (732°C) to improve fracture toughness.

Stainless Steel product forms offered at all Titanium Industries’ locations:

Stainless Steel Alloy 403 Applications:

  • Compressor blades
  • Turbine parts

DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.

Stainless Steel Alloy 403 | UNS# S40300 — Table 1
Chemical Composition
Cr 11.5 - 13.0% Ni 0.60% Min C 0.15% Max Si 0.50% Max Mn 1.0% Max
P 0.04% Max S 0.03% Max Fe Balance
Stainless Steel Alloy 403 | UNS# S40300 — Table 2
PHYSICAL PROPERTIES
Density Electrical conductivity (% IACS) Thermal conductivity (BTU/lbm -°F) Specific heat capacity (BTU/lbm -°F) Thermal expansion (min/in)-°F Melting Point (°F)
0.276 - 9.3 14.4 6.6 -
Stainless Steel Alloy 403 | UNS# S40300 — Table 3
Mechanical Properties
Property Minimum Maximum
Yield Strength Range (Rp0.2 Offset) (ksi) - 45
Tensile Strength Range (Rm) (ksi) - 70.3
Elongation (AL=5 x Ø) - 25.0%
Brinell Hardness (H) - 139
Modulus of Elasticity (ksi) (E): 30458
Machineability General Index: -

Stainless Steel Alloy 403: questions and answers

What is Stainless Steel Alloy 403?

Stainless Steel Alloy 403 is a straight chromium stainless steel that demonstrates reasonable corrosion resistance, high mechanical characteristics, and offers heat resistance and a scaling temperature of about 1300°F. 304 is corrosion and heat resistant martensitic stainless steel that offers a wide range of mechanical properties obtainable by appropriate heat treating.

Which stainless steel product forms does Titanium Industries offer?

Stainless Steel Round Bar and Stainless Steel Hex Bar, at all Titanium Industries locations.

What is Stainless Steel Alloy 403 used for?

Compressor blades and turbine parts.

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