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SAE-AISI T6 Steel vs. SAE-AISI A9 Steel

Both SAE-AISI T6 steel and SAE-AISI A9 steel are iron alloys. They have 67% 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 T6 steel and the bottom bar is SAE-AISI A9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
74
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1830
1460
Melting Onset (Solidus), °C 1770
1410
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 18
35
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
7.0
Density, g/cm3 9.5
7.8
Embodied Carbon, kg CO2/kg material 11
4.7
Embodied Energy, MJ/kg 170
70
Embodied Water, L/kg 160
82

Common Calculations

PREN (Pitting Resistance) 39
10
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 26 to 63
28 to 73
Strength to Weight: Bending, points 21 to 39
24 to 46
Thermal Diffusivity, mm2/s 4.7
9.6
Thermal Shock Resistance, points 26 to 64
25 to 66

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.45 to 0.55
Chromium (Cr), % 4.0 to 4.8
4.8 to 5.5
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 55.9 to 63.5
87 to 90.5
Manganese (Mn), % 0.2 to 0.4
0 to 0.5
Molybdenum (Mo), % 0.4 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), % 0.2 to 0.4
1.0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0.8 to 1.4

Comparable Variants