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SAE-AISI M47 Steel vs. SAE-AISI T15 Steel

Both SAE-AISI M47 steel and SAE-AISI T15 steel are iron alloys. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI M47 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 77
76
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
830 to 2240

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1540
1690
Melting Onset (Solidus), °C 1500
1640
Specific Heat Capacity, J/kg-K 450
430
Thermal Conductivity, W/m-K 23
21
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 26
43
Density, g/cm3 8.1
8.7
Embodied Carbon, kg CO2/kg material 7.4
16
Embodied Energy, MJ/kg 100
250
Embodied Water, L/kg 120
140

Common Calculations

PREN (Pitting Resistance) 38
27
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 28 to 79
26 to 71
Strength to Weight: Bending, points 24 to 48
22 to 43
Thermal Diffusivity, mm2/s 6.3
5.6
Thermal Shock Resistance, points 27 to 77
26 to 70

Alloy Composition

Carbon (C), % 1.1 to 1.2
1.5 to 1.6
Chromium (Cr), % 3.5 to 4.0
3.8 to 5.0
Cobalt (Co), % 4.8 to 5.3
4.8 to 5.3
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 78.7 to 85
67.5 to 73.5
Manganese (Mn), % 0.15 to 0.4
0.15 to 0.4
Molybdenum (Mo), % 9.3 to 10
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), % 0.2 to 0.45
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.3 to 1.8
11.8 to 13
Vanadium (V), % 1.2 to 1.4
4.5 to 5.3

Comparable Variants