UNS N08811 (Alloy 800HT) Stainless Steel

Austenitic & General Stainless Steels

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density8g/cm³

Elastic Modulus200GPa

Tensile Strength510MPa

Yield Strength190MPa

Brinell HardnessUnknown

Maximum Service Temperature1100°C

Weight Calculator

Chemical Composition

0.060 to 0.1%

19 to 23%

30 to 35%

0 to 1.5%

0 to 1.0%

0 to 0.040%

0 to 0.015%

0 to 0.75%

0.15 to 0.6%

39.5 to 50.6%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

33 %

Fatigue Strength

150 MPa

Poisson's Ratio

0.28

Shear Modulus

77 GPa

Shear Strength

340 MPa

Tensile Strength: Ultimate (UTS)

510 MPa

Tensile Strength: Yield (Proof)

190 MPa

Physical

Density

8.0 g/cm 3

Thermal

Curie Temperature

-120 °C

Latent Heat of Fusion

300 J/g

Maximum Temperature: Corrosion

490 °C

Maximum Temperature: Mechanical

1100 °C

Melting Completion (Liquidus)

1390 °C

Melting Onset (Solidus)

1360 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

12 W/m-K

Thermal Diffusivity

3.0 mm 2 /s

Thermal Expansion

14 µm/m-K

Thermal Shock Resistance

13 points

Electrical

Electrical Conductivity: Equal Volume

1.7 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.0 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

130 MJ/m 3

Resilience: Unit (Modulus of Resilience)

94 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

18 points

Environmental

Base Metal Price

30 % relative

Embodied Carbon

5.3 kg CO 2 /kg material

Embodied Energy

76 MJ/kg

Embodied Energy

76 MJ/kg 33 x 10 3 BTU/lb

Embodied Water

200 L/kg

Embodied Water

200 L/kg 24 gal/lb

Registered Designations & Aliases

Alloy 800HTN08811UNS N08811 (Alloy 800HT) Stainless Steel

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

ASTM B407 ASTM B407: Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube

ASTM B408 ASTM B408: Standard Specification for Nickel-Iron-Chromium Alloy Rod and Bar

ASTM B408 ASTM B408: Standard Specification for Nickel-Iron-Chromium Alloy Rod and Bar ASTM B515: Standard Specification for Welded UNS N08120, UNS N08800, UNS N08810, and UNS N08811 Alloy Tubes ASTM B409: Standard Specification for Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip ASTM B407: Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube ASTM B564: Standard Specification for Nickel Alloy Forgings Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016 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 B409 ASTM B409: Standard Specification for Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip

ASTM B515 ASTM B515: Standard Specification for Welded UNS N08120, UNS N08800, UNS N08810, and UNS N08811 Alloy Tubes

ASTM B564 ASTM B564: Standard Specification for Nickel Alloy Forgings