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SAE-AISI M44 Steel vs. SAE-AISI T15 Steel

Both SAE-AISI M44 steel and SAE-AISI T15 steel are iron alloys. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI M44 steel and the bottom bar is SAE-AISI T15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 870 to 2290
830 to 2240

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1590
1690
Melting Onset (Solidus), °C 1540
1640
Specific Heat Capacity, J/kg-K 440
430
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 43
43
Density, g/cm3 8.4
8.7
Embodied Carbon, kg CO2/kg material 9.9
16
Embodied Energy, MJ/kg 150
250
Embodied Water, L/kg 170
140

Common Calculations

PREN (Pitting Resistance) 35
27
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 28 to 75
26 to 71
Strength to Weight: Bending, points 24 to 46
22 to 43
Thermal Diffusivity, mm2/s 3.7
5.6
Thermal Shock Resistance, points 27 to 70
26 to 70

Alloy Composition

Carbon (C), % 1.1 to 1.2
1.5 to 1.6
Chromium (Cr), % 4.0 to 4.8
3.8 to 5.0
Cobalt (Co), % 11 to 12.3
4.8 to 5.3
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 65.3 to 70.6
67.5 to 73.5
Manganese (Mn), % 0.2 to 0.4
0.15 to 0.4
Molybdenum (Mo), % 6.0 to 7.0
0 to 1.0
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.3 to 0.55
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.0 to 5.8
11.8 to 13
Vanadium (V), % 1.9 to 2.2
4.5 to 5.3

Comparable Variants