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SAE-AISI H42 Steel vs. S45500 Stainless Steel

Both SAE-AISI H42 steel and S45500 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 20 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 S45500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
1370 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1620
1440
Melting Onset (Solidus), °C 1570
1400
Specific Heat Capacity, J/kg-K 440
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
17
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.8
3.8
Embodied Energy, MJ/kg 130
57
Embodied Water, L/kg 98
120

Common Calculations

PREN (Pitting Resistance) 31
13
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 23 to 65
48 to 65
Strength to Weight: Bending, points 21 to 42
35 to 42
Thermal Shock Resistance, points 20 to 57
48 to 64

Alloy Composition

Carbon (C), % 0.55 to 0.7
0 to 0.050
Chromium (Cr), % 3.8 to 4.5
11 to 12.5
Copper (Cu), % 0 to 0.25
1.5 to 2.5
Iron (Fe), % 79.3 to 83.8
71.5 to 79.2
Manganese (Mn), % 0.15 to 0.4
0 to 0.5
Molybdenum (Mo), % 4.5 to 5.5
0 to 0.5
Nickel (Ni), % 0 to 0.3
7.5 to 9.5
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0.8 to 1.4
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0

Comparable Variants