439 Stainless Steel
Chemical Composition


Carbon:               0.03% (Max)
Manganese:          1.00% (Max)
Silicon:                1.00% (Max)
Phosphorous:        0.040% (Max)
Sulfur:                 0.030% (Max)
Chromium:            17%-19%
Nickel:                 .50%

Tensile Strength:            60,000 PSI (415 MPa)
Yield Strength:               30,000 PSI (205 MPa)
Elongation:                    22% in 2" or 50 mm

*These numbers are "Typical" properties and may not be required to meet this grade. Please check with your Alro Sales Representative if physical properties are required for your application.*
Typical Uses
  • Complex and difficult to form components
  • Exhaust systems.
  • Household Appliances

439 Stainless Steel

Alro stocks 439 Stainless steel - low carbon austenitic titanium-stabilized, ferritic stainless steel with good ductility, toughness and resistance to sensitization. 439 stainless steel has good corrosion resistance when present in mildly corrosive environments, due to the typical 17% chromium content. It also offers good oxidation resistance at elevated temperatures. It is more ductile than 430 and can be formed using a wide range of roll forming/bending operations without hardening excessively during them. Being a ferritic stainless steel, 439 is not susceptible to chloride stress corrosion cracking.