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SAE-AISI 5120 Steel vs. SAE-AISI M10 Steel

Both SAE-AISI 5120 steel and SAE-AISI M10 steel are iron alloys. They have 85% of their average alloy composition in common. There are 21 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 5120 steel and the bottom bar is SAE-AISI M10 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 500
740 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1520
Melting Onset (Solidus), °C 1420
1470
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 47
31
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
14
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
8.3
Embodied Energy, MJ/kg 19
120
Embodied Water, L/kg 49
100

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
26 to 76
Strength to Weight: Bending, points 18
23 to 47
Thermal Diffusivity, mm2/s 13
8.5
Thermal Shock Resistance, points 16
23 to 68

Alloy Composition

Carbon (C), % 0.17 to 0.22
0.84 to 1.1
Chromium (Cr), % 0.7 to 0.9
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 97.6 to 98.3
82.3 to 85.6
Manganese (Mn), % 0.7 to 0.9
0.1 to 0.4
Molybdenum (Mo), % 0
7.8 to 8.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0.2 to 0.45
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2