UNS S82121 Stainless Steel
Duplex Stainless Steels
Property Overview
Density7.7g/cm³
Elastic Modulus200GPa
Tensile Strength730MPa
Yield Strength510MPa
Brinell Hardness250HB
Maximum Service Temperature1020°C
Chemical Composition
C
0 to 0.035%
CR
21 to 23%
NI
2.0 to 4.0%
MO
0.3 to 1.3%
MN
1.0 to 2.5%
SI
0 to 1.0%
N
0.15 to 0.25%
P
0 to 0.040%
S
0 to 0.010%
CU
0.2 to 1.2%
FE
66.7 to 75.4%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
28 %
Fatigue Strength
370 MPa
Poisson's Ratio
0.27
Shear Modulus
78 GPa
Shear Strength
470 MPa
Tensile Strength: Ultimate (UTS)
730 MPa
Tensile Strength: Yield (Proof)
510 MPa
Hardness
Brinell Hardness
250
Rockwell C Hardness
26
Physical
Density
7.7 g/cm 3
Thermal
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
430 °C
Maximum Temperature: Mechanical
1020 °C
Melting Completion (Liquidus)
1430 °C
Melting Onset (Solidus)
1380 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
15 W/m-K
Thermal Diffusivity
4.0 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
20 points
Electrical
Electrical Conductivity: Equal Volume
2.2 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.5 % IACS
Calculated
PREN (Pitting Resistance)
28
Resilience: Ultimate (Unit Rupture Work)
180 MJ/m 3
Resilience: Unit (Modulus of Resilience)
660 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
26 points
Strength to Weight: Bending
23 points
Environmental
Base Metal Price
14 % relative
Embodied Carbon
2.8 kg CO 2 /kg material
Embodied Energy
40 MJ/kg
Embodied Energy
40 MJ/kg 17 x 10 3 BTU/lb
Embodied Water
150 L/kg
Embodied Water
150 L/kg 18 gal/lb
Registered Designations & Aliases
S82121UNS S82121 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