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SAE-AISI M6 Steel vs. SAE-AISI S5 Steel

Both SAE-AISI M6 steel and SAE-AISI S5 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 (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M6 steel and the bottom bar is SAE-AISI S5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
680 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1560
1440
Melting Onset (Solidus), °C 1510
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 17
42
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 39
3.1
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.0
2.1
Embodied Energy, MJ/kg 120
29
Embodied Water, L/kg 160
51

Common Calculations

PREN (Pitting Resistance) 28
2.9
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 73
25 to 70
Strength to Weight: Bending, points 24 to 45
22 to 45
Thermal Diffusivity, mm2/s 4.7
11
Thermal Shock Resistance, points 26 to 68
23 to 65

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.5 to 0.65
Chromium (Cr), % 3.8 to 4.5
0 to 0.5
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 68.8 to 74.6
93.6 to 97
Manganese (Mn), % 0.15 to 0.4
0.6 to 1.0
Molybdenum (Mo), % 4.5 to 5.5
0.2 to 1.4
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
1.8 to 2.3
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 to 0.35

Comparable Variants