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SAE-AISI A10 Steel vs. S21900 Stainless Steel

Both SAE-AISI A10 steel and S21900 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A10 steel and the bottom bar is S21900 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
78
Tensile Strength: Ultimate (UTS), MPa 810 to 2040
710

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 40
14
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.1
3.0
Embodied Energy, MJ/kg 27
43
Embodied Water, L/kg 56
160

Common Calculations

PREN (Pitting Resistance) 5.1
25
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29 to 73
26
Strength to Weight: Bending, points 25 to 46
23
Thermal Diffusivity, mm2/s 11
3.8
Thermal Shock Resistance, points 27 to 68
15

Alloy Composition

Carbon (C), % 1.3 to 1.5
0 to 0.080
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 90.8 to 93.4
59.4 to 67.4
Manganese (Mn), % 1.6 to 2.1
8.0 to 10
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.6 to 2.1
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 1.0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030