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SAE-AISI M6 Steel vs. EN 1.4903 Stainless Steel

Both SAE-AISI M6 steel and EN 1.4903 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 (11, 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 1.4903 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
670 to 680

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1560
1460
Melting Onset (Solidus), °C 1510
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 17
26
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 39
7.0
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
2.6
Embodied Energy, MJ/kg 120
36
Embodied Water, L/kg 160
88

Common Calculations

PREN (Pitting Resistance) 28
13
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
7.0
Thermal Shock Resistance, points 26 to 68
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.75 to 0.85
0.080 to 0.12
Chromium (Cr), % 3.8 to 4.5
8.0 to 9.5
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 68.8 to 74.6
87.1 to 90.5
Manganese (Mn), % 0.15 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 4.5 to 5.5
0.85 to 1.1
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0 to 0.5
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
0.18 to 0.25