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SAE-AISI H41 Steel vs. S43940 Stainless Steel

Both SAE-AISI H41 steel and S43940 stainless steel are iron alloys. They have 85% 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 SAE-AISI H41 steel and the bottom bar is S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 710 to 2210
490

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1560
1440
Melting Onset (Solidus), °C 1510
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 28
25
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 18
12
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 6.8
2.6
Embodied Energy, MJ/kg 97
38
Embodied Water, L/kg 97
120

Common Calculations

PREN (Pitting Resistance) 35
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 76
18
Strength to Weight: Bending, points 22 to 47
18
Thermal Diffusivity, mm2/s 7.7
6.8
Thermal Shock Resistance, points 20 to 64
18

Alloy Composition

Carbon (C), % 0.6 to 0.75
0 to 0.030
Chromium (Cr), % 3.5 to 4.0
17.5 to 18.5
Iron (Fe), % 81.8 to 85
78.2 to 82.1
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 8.2 to 9.2
0
Niobium (Nb), % 0
0.3 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.1 to 0.6
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.0 to 1.3
0