AISI 321 (S32100) Stainless Steel

Austenitic & General Stainless Steels

Material conditionhot worked

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density7.8g/cm³

Elastic Modulus200GPa

Tensile Strength590MPa

Yield Strength220MPa

Brinell Hardness170HB

Maximum Service Temperature870°C

Weight Calculator

Chemical Composition

0 to 0.080%

17 to 19%

9.0 to 12%

0 to 2.0%

0 to 0.75%

0 to 0.1%

0 to 0.045%

0 to 0.030%

0 to 0.7%

65.3 to 74%

Mechanical

Elastic (Young's, Tensile) Modulus

200 GPa

Elongation at Break

50 %

Fatigue Strength

220 MPa

Poisson's Ratio

0.28

Shear Modulus

77 GPa

Shear Strength

420 MPa

Tensile Strength: Ultimate (UTS)

590 MPa

Tensile Strength: Yield (Proof)

220 MPa

Hardness

Brinell Hardness

170

Rockwell B Hardness

Physical

Density

7.8 g/cm 3

Thermal

Latent Heat of Fusion

290 J/g

Maximum Temperature: Corrosion

480 °C

Maximum Temperature: Mechanical

870 °C

Melting Completion (Liquidus)

1430 °C

Melting Onset (Solidus)

1400 °C

Specific Heat Capacity

480 J/kg-K

Thermal Conductivity

16 W/m-K

Thermal Diffusivity

4.1 mm 2 /s

Thermal Expansion

17 µm/m-K

Thermal Shock Resistance

13 points

Electrical

Electrical Conductivity: Equal Volume

2.4 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.7 % IACS

Calculated

PREN (Pitting Resistance)

Resilience: Ultimate (Unit Rupture Work)

230 MJ/m 3

Resilience: Unit (Modulus of Resilience)

130 kJ/m 3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

21 points

Strength to Weight: Bending

20 points

Environmental

Base Metal Price

16 % relative

Embodied Carbon

3.2 kg CO 2 /kg material

Embodied Energy

45 MJ/kg

Embodied Energy

45 MJ/kg 20 x 10 3 BTU/lb

Embodied Water

140 L/kg

Embodied Water

140 L/kg 17 gal/lb

Registered Designations & Aliases

321AISI 321AISI 321 (S32100) Stainless SteelS32100

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 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 A276: Standard Specification for Stainless Steel Bars and Shapes Creep-Resistant Steels, Fujio Abe et al. (editors), 2008 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 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