AISI 420 (S42000) Stainless Steel

Martensitic Stainless Steels

Material conditionannealed

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.7g/cm³

Elastic Modulus190GPa

Tensile Strength690MPa

Yield Strength380MPa

Brinell Hardness190HB

Maximum Service Temperature620°C

Weight Calculator

Chemical Composition

0.15 to 0.4%

12 to 14%

0 to 0.75%

0 to 0.5%

0 to 1.0%

0 to 0.040%

0 to 0.030%

82.3 to 87.9%

Mechanical

Elastic (Young's, Tensile) Modulus

190 GPa

Elongation at Break

15 %

Fatigue Strength

220 MPa

Poisson's Ratio

0.28

Shear Modulus

76 GPa

Shear Strength

420 MPa

Tensile Strength: Ultimate (UTS)

690 MPa

Tensile Strength: Yield (Proof)

380 MPa

Hardness

Brinell Hardness

190

Rockwell B Hardness

Physical

Density

7.7 g/cm 3

Thermal

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

390 °C

Maximum Temperature: Mechanical

620 °C

Melting Completion (Liquidus)

1510 °C

Melting Onset (Solidus)

1450 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

27 W/m-K

Thermal Diffusivity

7.3 mm 2 /s

Thermal Expansion

10 µm/m-K

Thermal Shock Resistance

25 points

Electrical

Electrical Conductivity: Equal Volume

3.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

3.5 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

88 MJ/m 3

Resilience: Unit (Modulus of Resilience)

380 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

25 points

Strength to Weight: Bending

22 points

Environmental

Base Metal Price

7.5 % 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

100 L/kg

Embodied Water

100 L/kg 12 gal/lb

Registered Designations & Aliases

420AISI 420AISI 420 (S42000) Stainless SteelS42000

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 A276: Standard Specification for Stainless Steel Bars and Shapes Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012 Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Corrosion of Stainless Steels, A. John Sedriks, 1996

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

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