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SAE-AISI H14 Steel vs. S31727 Stainless Steel

Both SAE-AISI H14 steel and S31727 stainless steel are iron alloys. They have 64% 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 S31727 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 75
78
Tensile Strength: Ultimate (UTS), MPa 710 to 2030
630

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1530
1440
Melting Onset (Solidus), °C 1490
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
24
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 2.7
4.7
Embodied Energy, MJ/kg 39
64
Embodied Water, L/kg 73
180

Common Calculations

PREN (Pitting Resistance) 13
35
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 69
22
Strength to Weight: Bending, points 22 to 44
20
Thermal Shock Resistance, points 24 to 68
14

Alloy Composition

Carbon (C), % 0.35 to 0.45
0 to 0.030
Chromium (Cr), % 4.8 to 5.5
17.5 to 19
Copper (Cu), % 0 to 0.25
2.8 to 4.0
Iron (Fe), % 86.5 to 89.9
53.7 to 61.3
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0 to 0.3
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.8 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 4.0 to 5.3
0