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SAE-AISI M6 Steel vs. EN 1.4347 Stainless Steel

Both SAE-AISI M6 steel and EN 1.4347 stainless steel are iron alloys. They have 71% 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 SAE-AISI M6 steel and the bottom bar is EN 1.4347 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
660

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1560
1410
Melting Onset (Solidus), °C 1510
1370
Specific Heat Capacity, J/kg-K 440
490
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
16
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.0
3.1
Embodied Energy, MJ/kg 120
44
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 28
28
Stiffness to Weight: Axial, points 13
15
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
19

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.050
Chromium (Cr), % 3.8 to 4.5
25 to 27
Cobalt (Co), % 11 to 13
0
Iron (Fe), % 68.8 to 74.6
62.2 to 69.4
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0
5.5 to 7.5
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.45
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0