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EN 1.4568 Stainless Steel vs. SAE-AISI M42 Steel

Both EN 1.4568 stainless steel and SAE-AISI M42 steel are iron alloys. They have 79% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.4568 stainless steel and the bottom bar is SAE-AISI M42 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 830 to 1620
810 to 2310

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1420
1540
Melting Onset (Solidus), °C 1380
1490
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 16
20
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 13
30
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 2.8
7.4
Embodied Energy, MJ/kg 40
100
Embodied Water, L/kg 140
140

Common Calculations

PREN (Pitting Resistance) 17
38
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30 to 58
28 to 79
Strength to Weight: Bending, points 25 to 40
24 to 48
Thermal Diffusivity, mm2/s 4.3
5.4
Thermal Shock Resistance, points 23 to 46
25 to 71

Alloy Composition

Aluminum (Al), % 0.7 to 1.5
0
Carbon (C), % 0 to 0.090
1.1 to 1.2
Chromium (Cr), % 16 to 18
3.5 to 4.3
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 70.9 to 76.8
76.3 to 81
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 0
9.0 to 10
Nickel (Ni), % 6.5 to 7.8
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.7
0.15 to 0.65
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
1.2 to 1.9
Vanadium (V), % 0
1.0 to 1.4