AISI 431 (S43100) Stainless Steel

Martensitic Stainless Steels

Material conditiontempered (T)

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.7g/cm³

Elastic Modulus200GPa

Tensile Strength890MPa

Yield Strength710MPa

Brinell Hardness250HB

Maximum Service Temperature850°C

Weight Calculator

Chemical Composition

0 to 0.2%

15 to 17%

1.3 to 2.5%

0 to 1.0%

0 to 0.040%

0 to 0.030%

78.2 to 83.8%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

17 %

Fatigue Strength

430 MPa

Poisson's Ratio

0.28

Reduction in Area

51 %

Shear Modulus

77 GPa

Shear Strength

550 MPa

Tensile Strength: Ultimate (UTS)

890 MPa

Tensile Strength: Yield (Proof)

710 MPa

Hardness

Brinell Hardness

250

Rockwell C Hardness

Physical

Density

7.7 g/cm 3

Thermal

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

400 °C

Maximum Temperature: Mechanical

850 °C

Melting Completion (Liquidus)

1510 °C

Melting Onset (Solidus)

1450 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

26 W/m-K

Thermal Diffusivity

7.0 mm 2 /s

Thermal Expansion

12 µm/m-K

Thermal Shock Resistance

28 points

Electrical

Electrical Conductivity: Equal Volume

2.6 % IACS

Electrical Conductivity: Equal Weight (Specific)

3.0 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

140 MJ/m 3

Resilience: Unit (Modulus of Resilience)

1270 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

32 points

Strength to Weight: Bending

27 points

Environmental

Base Metal Price

9.0 % relative

Embodied Carbon

2.2 kg CO 2 /kg material

Embodied Energy

31 MJ/kg

Embodied Energy

31 MJ/kg 13 x 10 3 BTU/lb

Embodied Water

120 L/kg

Embodied Water

120 L/kg 14 gal/lb

Registered Designations & Aliases

431AISI 431AISI 431 (S43100) Stainless SteelS43100

Standards

ASTM A176 ASTM A176: Standard Specification for Stainless and Heat-Resisting Chromium Steel Plate, Sheet, and Strip

ASTM A176 ASTM A176: Standard Specification for Stainless and Heat-Resisting Chromium Steel Plate, Sheet, and Strip ASTM A473: Standard Specification for Stainless Steel Forgings ASTM A479: Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels ASTM A276: Standard Specification for Stainless Steel Bars and Shapes Creep-Resistant Steels, Fujio Abe et al. (editors), 2008 Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011 Corrosion of Stainless Steels, A. John Sedriks, 1996

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

ASTM A473 ASTM A473: Standard Specification for Stainless Steel Forgings

ASTM A479 ASTM A479: Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels

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