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SAE-AISI H14 Steel vs. S40975 Stainless Steel

Both SAE-AISI H14 steel and S40975 stainless steel are iron alloys. They have a moderately high 93% 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 H14 steel and the bottom bar is S40975 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
460

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1530
1450
Melting Onset (Solidus), °C 1490
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 35
26
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 10
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
6.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.0
Embodied Energy, MJ/kg 39
28
Embodied Water, L/kg 73
95

Common Calculations

PREN (Pitting Resistance) 13
11
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 69
17
Strength to Weight: Bending, points 22 to 44
17
Thermal Diffusivity, mm2/s 9.3
7.0
Thermal Shock Resistance, points 24 to 68
17

Alloy Composition

Carbon (C), % 0.35 to 0.45
0 to 0.030
Chromium (Cr), % 4.8 to 5.5
10.5 to 11.7
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 86.5 to 89.9
84.4 to 89
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Nickel (Ni), % 0 to 0.3
0.5 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.8 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.75
Tungsten (W), % 4.0 to 5.3
0