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S21900 Stainless Steel vs. SAE-AISI T5 Steel

Both S21900 stainless steel and SAE-AISI T5 steel are iron alloys. They have 69% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is SAE-AISI T5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 710
860 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1400
1810
Melting Onset (Solidus), °C 1350
1750
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
60
Density, g/cm3 7.7
9.4
Embodied Carbon, kg CO2/kg material 3.0
11
Embodied Energy, MJ/kg 43
170
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 25
37
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 26
25 to 63
Strength to Weight: Bending, points 23
21 to 39
Thermal Diffusivity, mm2/s 3.8
5.5
Thermal Shock Resistance, points 15
26 to 66

Alloy Composition

Carbon (C), % 0 to 0.080
0.75 to 0.85
Chromium (Cr), % 19 to 21.5
3.8 to 5.0
Cobalt (Co), % 0
7.0 to 9.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 59.4 to 67.4
60.6 to 68.3
Manganese (Mn), % 8.0 to 10
0.2 to 0.4
Molybdenum (Mo), % 0
0.5 to 1.3
Nickel (Ni), % 5.5 to 7.5
0 to 0.3
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
1.8 to 2.4