UNS S31254 (Alloy 254) Stainless Steel

Austenitic & General Stainless Steels

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density8g/cm³

Elastic Modulus200GPa

Tensile Strength720MPa

Yield Strength330MPa

Brinell Hardness190HB

Maximum Service Temperature1090°C

Weight Calculator

Chemical Composition

0 to 0.020%

19.5 to 20.5%

17.5 to 18.5%

6.0 to 6.5%

0 to 1.0%

0 to 0.8%

0.18 to 0.22%

0 to 0.030%

0 to 0.010%

0.5 to 1.0%

51.4 to 56.3%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

40 %

Fatigue Strength

290 MPa

Poisson's Ratio

0.28

Reduction in Area

56 %

Shear Modulus

80 GPa

Shear Strength

490 MPa

Tensile Strength: Ultimate (UTS)

720 MPa

Tensile Strength: Yield (Proof)

330 MPa

Hardness

Brinell Hardness

190

Rockwell B Hardness

Physical

Density

8.0 g/cm 3

Thermal

Latent Heat of Fusion

300 J/g

Maximum Temperature: Corrosion

420 °C

Maximum Temperature: Mechanical

1090 °C

Melting Completion (Liquidus)

1460 °C

Melting Onset (Solidus)

1420 °C

Specific Heat Capacity

460 J/kg-K

Thermal Conductivity

14 W/m-K

Thermal Diffusivity

3.8 mm 2 /s

Thermal Expansion

17 µm/m-K

Thermal Shock Resistance

15 points

Electrical

Electrical Conductivity: Equal Volume

2.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.3 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

240 MJ/m 3

Resilience: Unit (Modulus of Resilience)

270 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

25 points

Strength to Weight: Bending

22 points

Environmental

Base Metal Price

28 % relative

Embodied Carbon

5.5 kg CO 2 /kg material

Embodied Energy

74 MJ/kg

Embodied Energy

74 MJ/kg 32 x 10 3 BTU/lb

Embodied Water

190 L/kg

Embodied Water

190 L/kg 22 gal/lb

Registered Designations & Aliases

Alloy 254S31254UNS S31254 (Alloy 254) Stainless Steel

Standards

ASTM A182 ASTM A182: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

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 A473 ASTM A473: Standard Specification for Stainless Steel Forgings

ASTM A473 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 A182: Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service ASTM A276: Standard Specification for Stainless Steel Bars and Shapes ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

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