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SAE-AISI T6 Steel vs. AISI 440A Stainless Steel

Both SAE-AISI T6 steel and AISI 440A stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T6 steel and the bottom bar is AISI 440A stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
730 to 1790

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1830
1480
Melting Onset (Solidus), °C 1770
1370
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 18
23
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 70
9.0
Density, g/cm3 9.5
7.7
Embodied Carbon, kg CO2/kg material 11
2.2
Embodied Energy, MJ/kg 170
31
Embodied Water, L/kg 160
120

Common Calculations

PREN (Pitting Resistance) 39
18
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 26 to 63
26 to 65
Strength to Weight: Bending, points 21 to 39
23 to 43
Thermal Diffusivity, mm2/s 4.7
6.2
Thermal Shock Resistance, points 26 to 64
26 to 65

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.6 to 0.75
Chromium (Cr), % 4.0 to 4.8
16 to 18
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 55.9 to 63.5
78.4 to 83.4
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
0 to 0.75
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0

Comparable Variants