409 Stainless Steel Alloy

UNS: S40910/S40920/S40930
EN-DIN: 1.4512

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409 Stainless Steel Strip, Coil & Sheet

  • ASTM A240

409 Stainless is used when corrosion protection is needed beyond a carbon steel capacity. Applications include: Automotive, exhaust systems, and heat exchangers.

Our wide capabilities give us a unique ability to supply all of your 409 stainless steel strip, coil, and sheet needs.

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Nominal Composition


Physical Properties

At 70°FAt 20°C
Density0.280 lb./in³7.75 g/cm³
Modulus of Elasticity (E)30.2 x 10³ ksi208.22 x 10³MPa
Electrical Resistivity24 μ ohm.in60 μ ohm.cm
Typical Room Temperature Mechanical Properties

Typical Mechanical Properties

Typical mechanical properties are based on ASTM A240

ConditionTensile Strength Min (UTS)0.2% YS MinElongation% in 2” Min (50.8 mm)Hardness Rockwell
Annealed (Min)55 ksi (380 MPa)25 ksi (170 MPa)20%88 HRBW (Max)
Limitation of Liability and Disclaimer of Warranty:
  • The content in these data sheets is provided primarily by third-party melting mills and is provided for reference only. It is not intended for engineering or design.
  • Applications may be discussed, however, Combined Metals Company, LLC, does not recommend or endorse any material for any particular end use or application.
  • The data included in this data sheet are typical values and may vary.
  • Combined Metals Company, LLC, makes no representations or warranties, express or implied, as to the accuracy, completeness, condition, suitability, performance, fitness for a particular purpose, or merchantability of any information contained in any data sheet.

In no event will Combined Metals Company, LLC, be liable for any damages whatsoever arising from the use of the information included in the data sheets.

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