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SAE-AISI T5 Steel vs. AISI 348 Stainless Steel

Both SAE-AISI T5 steel and AISI 348 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 (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T5 steel and the bottom bar is AISI 348 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 80
77
Tensile Strength: Ultimate (UTS), MPa 860 to 2140
580

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1810
1430
Melting Onset (Solidus), °C 1750
1390
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 60
19
Density, g/cm3 9.4
7.8
Embodied Carbon, kg CO2/kg material 11
3.7
Embodied Energy, MJ/kg 170
54
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 37
18
Stiffness to Weight: Axial, points 12
14
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
4.2
Thermal Shock Resistance, points 26 to 66
13

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.080
Chromium (Cr), % 3.8 to 5.0
17 to 19
Cobalt (Co), % 7.0 to 9.5
0 to 0.2
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 60.6 to 68.3
63.8 to 74
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.5 to 1.3
0
Nickel (Ni), % 0 to 0.3
9.0 to 13
Niobium (Nb), % 0
0 to 1.0
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
Tantalum (Ta), % 0
0 to 0.1
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 1.8 to 2.4
0