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SAE-AISI M3 Class 1 Steel vs. Grade VDSiCr Steel

Both SAE-AISI M3 class 1 steel and grade VDSiCr steel are iron alloys. They have 82% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M3 class 1 steel and the bottom bar is grade VDSiCr 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
80
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
1950

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1610
1440
Melting Onset (Solidus), °C 1570
1400
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 26
46
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.2
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 10
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 100
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 72
70
Strength to Weight: Bending, points 22 to 44
45
Thermal Diffusivity, mm2/s 7.2
12
Thermal Shock Resistance, points 24 to 67
58

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.5 to 0.6
Chromium (Cr), % 3.8 to 4.5
0.5 to 0.8
Copper (Cu), % 0 to 0.25
0 to 0.060
Iron (Fe), % 76.9 to 82.9
96.6 to 97.8
Manganese (Mn), % 0.15 to 0.4
0.5 to 0.9
Molybdenum (Mo), % 4.8 to 6.5
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
1.2 to 1.6
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.3 to 2.8
0