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SAE-AISI M4 Steel vs. Type 2 Magnetic Alloy

Both SAE-AISI M4 steel and Type 2 magnetic alloy are iron alloys. They have 52% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M4 steel and the bottom bar is Type 2 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 76
72
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
510 to 910

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1610
1420
Melting Onset (Solidus), °C 1560
1370
Specific Heat Capacity, J/kg-K 440
460
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
33
Density, g/cm3 8.3
8.4
Embodied Carbon, kg CO2/kg material 14
5.9
Embodied Energy, MJ/kg 210
81
Embodied Water, L/kg 110
140

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26 to 72
17 to 30
Strength to Weight: Bending, points 23 to 45
17 to 25
Thermal Shock Resistance, points 24 to 68
16 to 29

Alloy Composition

Carbon (C), % 1.3 to 1.4
0 to 0.050
Chromium (Cr), % 3.8 to 4.8
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 75.9 to 81.4
48.2 to 53
Manganese (Mn), % 0.15 to 0.4
0 to 0.8
Molybdenum (Mo), % 4.3 to 5.5
0 to 0.3
Nickel (Ni), % 0 to 0.3
47 to 49
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0

Comparable Variants