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SAE-AISI M6 Steel vs. EN 1.4406 Stainless Steel

Both SAE-AISI M6 steel and EN 1.4406 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 M6 steel and the bottom bar is EN 1.4406 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
78
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
680

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1560
1440
Melting Onset (Solidus), °C 1510
1400
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 39
18
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.0
3.7
Embodied Energy, MJ/kg 120
51
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 28
28
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 73
24
Strength to Weight: Bending, points 24 to 45
22
Thermal Diffusivity, mm2/s 4.7
4.0
Thermal Shock Resistance, points 26 to 68
15

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
16.5 to 18.5
Cobalt (Co), % 11 to 13
0
Iron (Fe), % 68.8 to 74.6
63.2 to 71.4
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.5 to 5.5
2.0 to 2.5
Nickel (Ni), % 0
10 to 12.5
Nitrogen (N), % 0
0.12 to 0.22
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0