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SAE-AISI H42 Steel vs. S44635 Stainless Steel

Both SAE-AISI H42 steel and S44635 stainless steel are iron alloys. They have 74% 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 H42 steel and the bottom bar is S44635 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
710

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1620
1460
Melting Onset (Solidus), °C 1570
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 24
16
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
22
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.8
4.4
Embodied Energy, MJ/kg 130
62
Embodied Water, L/kg 98
170

Common Calculations

PREN (Pitting Resistance) 31
39
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 23 to 65
25
Strength to Weight: Bending, points 21 to 42
23
Thermal Diffusivity, mm2/s 6.5
4.4
Thermal Shock Resistance, points 20 to 57
23

Alloy Composition

Carbon (C), % 0.55 to 0.7
0 to 0.025
Chromium (Cr), % 3.8 to 4.5
24.5 to 26
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 79.3 to 83.8
61.5 to 68.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 4.5 to 5.5
3.5 to 4.5
Nickel (Ni), % 0 to 0.3
3.5 to 4.5
Niobium (Nb), % 0
0.2 to 0.8
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0