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SAE-AISI M6 Steel vs. EN 1.4659 Stainless Steel

Both SAE-AISI M6 steel and EN 1.4659 stainless steel are iron alloys. They have 52% 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 1.4659 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
900

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1560
1480
Melting Onset (Solidus), °C 1510
1430
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 17
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 39
37
Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.0
6.5
Embodied Energy, MJ/kg 120
89
Embodied Water, L/kg 160
220

Common Calculations

PREN (Pitting Resistance) 28
54
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28 to 73
31
Strength to Weight: Bending, points 24 to 45
25
Thermal Diffusivity, mm2/s 4.7
3.2
Thermal Shock Resistance, points 26 to 68
19

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.020
Chromium (Cr), % 3.8 to 4.5
23 to 25
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
1.0 to 2.0
Iron (Fe), % 68.8 to 74.6
35.7 to 45.7
Manganese (Mn), % 0.15 to 0.4
2.0 to 4.0
Molybdenum (Mo), % 4.5 to 5.5
5.5 to 6.5
Nickel (Ni), % 0
21 to 23
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 3.8 to 4.8
1.5 to 2.5
Vanadium (V), % 1.3 to 1.7
0