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SAE-AISI T15 Steel vs. S44626 Stainless Steel

Both SAE-AISI T15 steel and S44626 stainless steel are iron alloys. They have 76% 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 T15 steel and the bottom bar is S44626 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
540

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1690
1440
Melting Onset (Solidus), °C 1640
1390
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 43
14
Density, g/cm3 8.7
7.7
Embodied Carbon, kg CO2/kg material 16
2.9
Embodied Energy, MJ/kg 250
42
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 27
30
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 22
26
Strength to Weight: Axial, points 26 to 71
19
Strength to Weight: Bending, points 22 to 43
19
Thermal Diffusivity, mm2/s 5.6
4.6
Thermal Shock Resistance, points 26 to 70
18

Alloy Composition

Carbon (C), % 1.5 to 1.6
0 to 0.060
Chromium (Cr), % 3.8 to 5.0
25 to 27
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 67.5 to 73.5
68.1 to 74.1
Manganese (Mn), % 0.15 to 0.4
0 to 0.75
Molybdenum (Mo), % 0 to 1.0
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
0 to 0.5
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.2 to 1.0
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0