UNS S21900 (XM-10) Stainless Steel
Austenitic & General Stainless Steels
Property Overview
Density7.7g/cm³
Elastic Modulus200GPa
Tensile Strength710MPa
Yield Strength390MPa
Brinell Hardness220HB
Maximum Service Temperature980°C
Chemical Composition
C
0 to 0.080%
CR
19 to 21.5%
NI
5.5 to 7.5%
MN
8.0 to 10%
SI
0 to 1.0%
N
0.15 to 0.4%
P
0 to 0.045%
S
0 to 0.030%
FE
59.4 to 67.4%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
50 %
Fatigue Strength
380 MPa
Poisson's Ratio
0.28
Reduction in Area
57 %
Shear Modulus
78 GPa
Shear Strength
510 MPa
Tensile Strength: Ultimate (UTS)
710 MPa
Tensile Strength: Yield (Proof)
390 MPa
Hardness
Brinell Hardness
220
Physical
Density
7.7 g/cm 3
Thermal
Latent Heat of Fusion
290 J/g
Maximum Temperature: Corrosion
420 °C
Maximum Temperature: Mechanical
980 °C
Melting Completion (Liquidus)
1400 °C
Melting Onset (Solidus)
1350 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
14 W/m-K
Thermal Diffusivity
3.8 mm 2 /s
Thermal Expansion
17 µm/m-K
Thermal Shock Resistance
15 points
Electrical
Electrical Conductivity: Equal Volume
2.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.9 % IACS
Calculated
PREN (Pitting Resistance)
25
Resilience: Ultimate (Unit Rupture Work)
300 MJ/m 3
Resilience: Unit (Modulus of Resilience)
380 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
15 % relative
Embodied Carbon
3.0 kg CO 2 /kg material
Embodied Energy
43 MJ/kg
Embodied Energy
43 MJ/kg 19 x 10 3 BTU/lb
Embodied Water
160 L/kg
Embodied Water
160 L/kg 19 gal/lb
Registered Designations & Aliases
S21900UNS S21900 (XM-10) Stainless SteelXM-10
Standards
ASTM A473 ASTM A473: Standard Specification for Stainless Steel Forgings
ASTM A473 ASTM A473: Standard Specification for Stainless Steel Forgings Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
ASTM A959 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels