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SAE-AISI M6 Steel vs. AISI 205 Stainless Steel

Both SAE-AISI M6 steel and AISI 205 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 20 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 AISI 205 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
77
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
800 to 1430

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1560
1380
Melting Onset (Solidus), °C 1510
1340
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 12
18

Otherwise Unclassified Properties

Base Metal Price, % relative 39
11
Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 8.0
2.6
Embodied Energy, MJ/kg 120
37
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 28
23
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 28 to 73
29 to 52
Strength to Weight: Bending, points 24 to 45
25 to 37
Thermal Shock Resistance, points 26 to 68
16 to 29

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.12 to 0.25
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
62.6 to 68.1
Manganese (Mn), % 0.15 to 0.4
14 to 15.5
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.060
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0

Comparable Variants