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SAE-AISI H14 Steel vs. S21800 Stainless Steel

Both SAE-AISI H14 steel and S21800 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H14 steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
75
Tensile Strength: Ultimate (UTS), MPa 710 to 2030
740

Thermal Properties

Latent Heat of Fusion, J/g 270
340
Melting Completion (Liquidus), °C 1530
1360
Melting Onset (Solidus), °C 1490
1310
Specific Heat Capacity, J/kg-K 460
500
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
15
Density, g/cm3 8.1
7.5
Embodied Carbon, kg CO2/kg material 2.7
3.1
Embodied Energy, MJ/kg 39
45
Embodied Water, L/kg 73
150

Common Calculations

PREN (Pitting Resistance) 13
19
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 24 to 69
27
Strength to Weight: Bending, points 22 to 44
24
Thermal Shock Resistance, points 24 to 68
17

Alloy Composition

Carbon (C), % 0.35 to 0.45
0 to 0.1
Chromium (Cr), % 4.8 to 5.5
16 to 18
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 86.5 to 89.9
59.1 to 65.4
Manganese (Mn), % 0.2 to 0.5
7.0 to 9.0
Nickel (Ni), % 0 to 0.3
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.030
0 to 0.060
Silicon (Si), % 0.8 to 1.2
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 4.0 to 5.3
0