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SAE-AISI H42 Steel vs. S44700 Stainless Steel

Both SAE-AISI H42 steel and S44700 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H42 steel and the bottom bar is S44700 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
82
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
600

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1620
1460
Melting Onset (Solidus), °C 1570
1410
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
18
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.8
3.6
Embodied Energy, MJ/kg 130
49
Embodied Water, L/kg 98
180

Common Calculations

PREN (Pitting Resistance) 31
42
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 23 to 65
21
Strength to Weight: Bending, points 21 to 42
20
Thermal Shock Resistance, points 20 to 57
19

Alloy Composition

Carbon (C), % 0.55 to 0.7
0 to 0.010
Chromium (Cr), % 3.8 to 4.5
28 to 30
Copper (Cu), % 0 to 0.25
0 to 0.15
Iron (Fe), % 79.3 to 83.8
64.9 to 68.5
Manganese (Mn), % 0.15 to 0.4
0 to 0.3
Molybdenum (Mo), % 4.5 to 5.5
3.5 to 4.2
Nickel (Ni), % 0 to 0.3
0 to 0.15
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0