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SAE-AISI T15 Steel vs. SAE-AISI T6 Steel

Both SAE-AISI T15 steel and SAE-AISI T6 steel are iron alloys. They have 86% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI T15 steel and the bottom bar is SAE-AISI T6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
880 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1690
1830
Melting Onset (Solidus), °C 1640
1770
Specific Heat Capacity, J/kg-K 430
400
Thermal Conductivity, W/m-K 21
18
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 43
70
Density, g/cm3 8.7
9.5
Embodied Carbon, kg CO2/kg material 16
11
Embodied Energy, MJ/kg 250
170
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 27
39
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 22
21
Strength to Weight: Axial, points 26 to 71
26 to 63
Strength to Weight: Bending, points 22 to 43
21 to 39
Thermal Diffusivity, mm2/s 5.6
4.7
Thermal Shock Resistance, points 26 to 70
26 to 64

Alloy Composition

Carbon (C), % 1.5 to 1.6
0.75 to 0.85
Chromium (Cr), % 3.8 to 5.0
4.0 to 4.8
Cobalt (Co), % 4.8 to 5.3
11 to 13
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 67.5 to 73.5
55.9 to 63.5
Manganese (Mn), % 0.15 to 0.4
0.2 to 0.4
Molybdenum (Mo), % 0 to 1.0
0.4 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), % 0.15 to 0.4
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 11.8 to 13
18.5 to 21
Vanadium (V), % 4.5 to 5.3
1.5 to 2.1

Comparable Variants