UNS N08904 (904L) Stainless Steel

Austenitic & General Stainless Steels

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density8.1g/cm³

Elastic Modulus200GPa

Tensile Strength540MPa

Yield Strength240MPa

Brinell Hardness170HB

Maximum Service Temperature1100°C

Weight Calculator

Chemical Composition

0 to 0.020%

19 to 23%

23 to 28%

4.0 to 5.0%

0 to 2.0%

0 to 1.0%

0 to 0.1%

0 to 0.045%

0 to 0.035%

1.0 to 2.0%

38.8 to 53%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

38 %

Fatigue Strength

200 MPa

Poisson's Ratio

0.28

Shear Modulus

79 GPa

Shear Strength

370 MPa

Tensile Strength: Ultimate (UTS)

540 MPa

Tensile Strength: Yield (Proof)

240 MPa

Hardness

Brinell Hardness

170

Rockwell B Hardness

Physical

Density

8.1 g/cm 3

Thermal

Latent Heat of Fusion

300 J/g

Maximum Temperature: Corrosion

430 °C

Maximum Temperature: Mechanical

1100 °C

Melting Completion (Liquidus)

1440 °C

Melting Onset (Solidus)

1390 °C

Specific Heat Capacity

470 J/kg-K

Thermal Conductivity

12 W/m-K

Thermal Diffusivity

3.1 mm 2 /s

Thermal Expansion

16 µm/m-K

Thermal Shock Resistance

12 points

Electrical

Electrical Conductivity: Equal Volume

1.7 % IACS

Electrical Conductivity: Equal Weight (Specific)

1.9 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

170 MJ/m 3

Resilience: Unit (Modulus of Resilience)

150 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

19 points

Strength to Weight: Bending

18 points

Environmental

Base Metal Price

32 % relative

Embodied Carbon

5.8 kg CO 2 /kg material

Embodied Energy

79 MJ/kg

Embodied Energy

79 MJ/kg 34 x 10 3 BTU/lb

Embodied Water

200 L/kg

Embodied Water

200 L/kg 24 gal/lb

Registered Designations & Aliases

904LN08904UNS N08904 (904L) 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 A959 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

ASTM B649 ASTM B649: Standard Specification for Ni-Fe-Cr-Mo-Cu Low-Carbon Alloy (UNS N08904), Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925, UNS N08031, and UNS N08926), and Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire

ASTM B673 ASTM B673: Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Pipe

ASTM B673 ASTM B673: Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Pipe ASTM B674: Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Tube ASTM B677: Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Seamless Pipe and Tube ASTM B649: Standard Specification for Ni-Fe-Cr-Mo-Cu Low-Carbon Alloy (UNS N08904), Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925, UNS N08031, and UNS N08926), and Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire 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 Nickel Alloys, Ulrich Heubner (editor), 1998 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 B674 ASTM B674: Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Tube

ASTM B677 ASTM B677: Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Seamless Pipe and Tube