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SAE-AISI T5 Steel vs. S44625 Stainless Steel

Both SAE-AISI T5 steel and S44625 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T5 steel and the bottom bar is S44625 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 860 to 2140
590

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1810
1440
Melting Onset (Solidus), °C 1750
1400
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 11
11

Otherwise Unclassified Properties

Base Metal Price, % relative 60
14
Density, g/cm3 9.4
7.7
Embodied Carbon, kg CO2/kg material 11
2.8
Embodied Energy, MJ/kg 170
39
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 37
30
Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 25 to 63
21
Strength to Weight: Bending, points 21 to 39
20
Thermal Diffusivity, mm2/s 5.5
4.6
Thermal Shock Resistance, points 26 to 66
19

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.010
Chromium (Cr), % 3.8 to 5.0
25 to 27.5
Cobalt (Co), % 7.0 to 9.5
0
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 60.6 to 68.3
69.4 to 74.3
Manganese (Mn), % 0.2 to 0.4
0 to 0.4
Molybdenum (Mo), % 0.5 to 1.3
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
0 to 0.5
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 1.8 to 2.4
0