UNS S32101 Stainless Steel
S32101 stainless steel is a duplex stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition.
It has a moderately low base cost among wrought duplex stainless steels. In addition, it has a moderately high ductility and a moderately low embodied energy.
The graph bars on the material properties cards below compare S32101 stainless steel to: wrought duplex stainless steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
260
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Elongation at Break
34 %
Fatigue Strength
400 MPa 58 x 103 psi
Poisson's Ratio
0.28
Rockwell C Hardness
27
Shear Modulus
78 GPa 11 x 106 psi
Shear Strength
490 MPa 72 x 103 psi
Tensile Strength: Ultimate (UTS)
740 MPa 110 x 103 psi
Tensile Strength: Yield (Proof)
500 MPa 73 x 103 psi
Thermal Properties
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
430 °C 810 °F
Maximum Temperature: Mechanical
1000 °C 1830 °F
Melting Completion (Liquidus)
1420 °C 2580 °F
Melting Onset (Solidus)
1370 °C 2500 °F
Specific Heat Capacity
480 J/kg-K 0.12 BTU/lb-°F
Thermal Conductivity
15 W/m-K 8.7 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.5 % IACS
Otherwise Unclassified Properties
Base Metal Price
12 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
38 MJ/kg 16 x 103 BTU/lb
Embodied Water
150 L/kg 18 gal/lb
Common Calculations
PREN (Pitting Resistance)
27
Resilience: Ultimate (Unit Rupture Work)
230 MJ/m3
Resilience: Unit (Modulus of Resilience)
640 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
27 points
Strength to Weight: Bending
24 points
Thermal Diffusivity
4.0 mm2/s
Thermal Shock Resistance
20 points
Alloy Composition
Among wrought stainless steels, the composition of S32101 stainless steel is notable for containing comparatively high amounts of manganese (Mn) and chromium (Cr). Manganese is used to improve ductility at elevated temperatures. It also permits a higher nitrogen content than would otherwise be possible. Chromium is the defining alloying element of stainless steel. Higher chromium content imparts additional corrosion resistance.
| Fe | 67.3 to 73.3 | |
| Cr | 21 to 22 | |
| Mn | 4.0 to 6.0 | |
| Ni | 1.4 to 1.7 | |
| Si | 0 to 1.0 | |
| Mo | 0.1 to 0.8 | |
| Cu | 0.1 to 0.8 | |
| N | 0.2 to 0.25 | |
| C | 0 to 0.040 | |
| P | 0 to 0.040 | |
| S | 0 to 0.030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
Duplex Stainless Steels, Iris Alvarez-Armas and Suzanne Degallaix-Moreuil (editors), 2009
Duplex Stainless Steels: Microstructure, Properties and Applications, Robert N. Gunn (editor), 1997
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 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
Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011
Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993
Corrosion of Stainless Steels, A. John Sedriks, 1996
ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994