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SAE-AISI T15 Steel vs. SAE-AISI A9 Steel

Both SAE-AISI T15 steel and SAE-AISI A9 steel are iron alloys. They have 78% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T15 steel and the bottom bar is SAE-AISI A9 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 76
74
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1690
1460
Melting Onset (Solidus), °C 1640
1410
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 21
35
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 43
7.0
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 16
4.7
Embodied Energy, MJ/kg 250
70
Embodied Water, L/kg 140
82

Common Calculations

PREN (Pitting Resistance) 27
10
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 26 to 71
28 to 73
Strength to Weight: Bending, points 22 to 43
24 to 46
Thermal Diffusivity, mm2/s 5.6
9.6
Thermal Shock Resistance, points 26 to 70
25 to 66

Alloy Composition

Carbon (C), % 1.5 to 1.6
0.45 to 0.55
Chromium (Cr), % 3.8 to 5.0
4.8 to 5.5
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 67.5 to 73.5
87 to 90.5
Manganese (Mn), % 0.15 to 0.4
0 to 0.5
Molybdenum (Mo), % 0 to 1.0
1.3 to 1.8
Nickel (Ni), % 0 to 0.3
1.3 to 1.8
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.4
1.0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0.8 to 1.4

Comparable Variants