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S21800 Stainless Steel vs. SAE-AISI H24 Steel

Both S21800 stainless steel and SAE-AISI H24 steel are iron alloys. They have 66% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is SAE-AISI H24 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 740
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 340
240
Melting Completion (Liquidus), °C 1360
1750
Melting Onset (Solidus), °C 1310
1700
Specific Heat Capacity, J/kg-K 500
420
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
37
Density, g/cm3 7.5
9.1
Embodied Carbon, kg CO2/kg material 3.1
6.1
Embodied Energy, MJ/kg 45
93
Embodied Water, L/kg 150
78

Common Calculations

PREN (Pitting Resistance) 19
28
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 26
22
Strength to Weight: Axial, points 27
22 to 61
Strength to Weight: Bending, points 24
20 to 39
Thermal Shock Resistance, points 17
22 to 61

Alloy Composition

Carbon (C), % 0 to 0.1
0.42 to 0.53
Chromium (Cr), % 16 to 18
2.5 to 3.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 59.1 to 65.4
78 to 82.4
Manganese (Mn), % 7.0 to 9.0
0.15 to 0.4
Nickel (Ni), % 8.0 to 9.0
0 to 0.3
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 3.5 to 4.5
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6