AISI 409 (S40900) Stainless Steel

Ferritic Stainless Steels

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.7g/cm³

Elastic Modulus190GPa

Tensile Strength420MPa

Yield Strength200MPa

Brinell HardnessUnknown

Maximum Service Temperature710°C

Weight Calculator

Chemical Composition

0 to 0.080%

10.5 to 11.7%

0 to 0.5%

0 to 1.0%

0 to 0.045%

0 to 0.030%

0 to 0.75%

84.9 to 89.5%

Mechanical

Elastic (Young's, Tensile) Modulus

190 GPa

Elongation at Break

24 %

Fatigue Strength

140 MPa

Poisson's Ratio

0.28

Shear Modulus

75 GPa

Shear Strength

270 MPa

Tensile Strength: Ultimate (UTS)

420 MPa

Tensile Strength: Yield (Proof)

200 MPa

Physical

Density

7.7 g/cm 3

Thermal

Latent Heat of Fusion

270 J/g

Maximum Temperature: Corrosion

450 °C

Maximum Temperature: Mechanical

710 °C

Melting Completion (Liquidus)

1450 °C

Melting Onset (Solidus)

1400 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

25 W/m-K

Thermal Diffusivity

6.7 mm 2 /s

Thermal Expansion

11 µm/m-K

Thermal Shock Resistance

15 points

Electrical

Electrical Conductivity: Equal Volume

2.9 % IACS

Electrical Conductivity: Equal Weight (Specific)

3.3 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

83 MJ/m 3

Resilience: Unit (Modulus of Resilience)

100 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

15 points

Strength to Weight: Bending

16 points

Environmental

Base Metal Price

6.5 % relative

Embodied Carbon

2.0 kg CO 2 /kg material

Embodied Energy

28 MJ/kg

Embodied Energy

28 MJ/kg 12 x 10 3 BTU/lb

Embodied Water

94 L/kg

Embodied Water

94 L/kg 11 gal/lb

Registered Designations & Aliases

409AISI 409AISI 409 (S40900) Stainless SteelS40900

Standards

ASTM A240 ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

ASTM A276 ASTM A276: Standard Specification for Stainless Steel Bars and Shapes

ASTM A276 ASTM A276: Standard Specification for Stainless Steel Bars and Shapes Creep-Resistant Steels, Fujio Abe et al. (editors), 2008 ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005 Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Corrosion of Stainless Steels, A. John Sedriks, 1996

ASTM A959 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels