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SAE-AISI T6 Steel vs. AISI 309HCb Stainless Steel

Both SAE-AISI T6 steel and AISI 309HCb stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, 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 309HCb 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
78
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
590

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1830
1420
Melting Onset (Solidus), °C 1770
1380
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
23
Density, g/cm3 9.5
7.8
Embodied Carbon, kg CO2/kg material 11
4.1
Embodied Energy, MJ/kg 170
59
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 39
23
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 26 to 63
21
Strength to Weight: Bending, points 21 to 39
20
Thermal Diffusivity, mm2/s 4.7
4.0
Thermal Shock Resistance, points 26 to 64
13

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.040 to 0.1
Chromium (Cr), % 4.0 to 4.8
22 to 24
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 55.9 to 63.5
56 to 66
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
12 to 16
Niobium (Nb), % 0
0 to 1.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.4
0 to 0.75
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