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SAE-AISI H42 Steel vs. EN 1.4318 Stainless Steel

Both SAE-AISI H42 steel and EN 1.4318 stainless steel are iron alloys. They have 78% 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 EN 1.4318 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 700 to 1980
740

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1620
1430
Melting Onset (Solidus), °C 1570
1380
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 24
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
13
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.8
2.8
Embodied Energy, MJ/kg 130
39
Embodied Water, L/kg 98
130

Common Calculations

PREN (Pitting Resistance) 31
20
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 23 to 65
27
Strength to Weight: Bending, points 21 to 42
23
Thermal Diffusivity, mm2/s 6.5
4.0
Thermal Shock Resistance, points 20 to 57
17

Alloy Composition

Carbon (C), % 0.55 to 0.7
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
16.5 to 18.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 79.3 to 83.8
70.2 to 77.4
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
6.0 to 8.0
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0