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SAE-AISI M44 Steel vs. SAE-AISI S4 Steel

Both SAE-AISI M44 steel and SAE-AISI S4 steel are iron alloys. They have 70% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M44 steel and the bottom bar is SAE-AISI S4 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 78
72
Tensile Strength: Ultimate (UTS), MPa 870 to 2290
670 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1590
1430
Melting Onset (Solidus), °C 1540
1390
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 14
44
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 43
2.2
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 9.9
2.0
Embodied Energy, MJ/kg 150
29
Embodied Water, L/kg 170
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 75
24 to 77
Strength to Weight: Bending, points 24 to 46
22 to 48
Thermal Diffusivity, mm2/s 3.7
12
Thermal Shock Resistance, points 27 to 70
20 to 65

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.5 to 0.65
Chromium (Cr), % 4.0 to 4.8
0.1 to 0.5
Cobalt (Co), % 11 to 12.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 65.3 to 70.6
95.2 to 96.9
Manganese (Mn), % 0.2 to 0.4
0.6 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.3 to 0.55
1.8 to 2.3
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.0 to 5.8
0
Vanadium (V), % 1.9 to 2.2
0.15 to 0.35

Comparable Variants