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SAE-AISI T4 Steel vs. S35315 Stainless Steel

Both SAE-AISI T4 steel and S35315 stainless steel are iron alloys. They have 42% 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 T4 steel and the bottom bar is S35315 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
78
Tensile Strength: Ultimate (UTS), MPa 800 to 2140
740

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Melting Completion (Liquidus), °C 1810
1370
Melting Onset (Solidus), °C 1750
1330
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 55
34
Density, g/cm3 9.4
7.9
Embodied Carbon, kg CO2/kg material 8.5
5.7
Embodied Energy, MJ/kg 130
81
Embodied Water, L/kg 120
220

Common Calculations

PREN (Pitting Resistance) 37
27
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 24 to 64
26
Strength to Weight: Bending, points 20 to 39
23
Thermal Diffusivity, mm2/s 5.4
3.1
Thermal Shock Resistance, points 24 to 64
17

Alloy Composition

Carbon (C), % 0.7 to 0.8
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.1
Chromium (Cr), % 3.8 to 4.5
24 to 26
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 66.3 to 72.3
33.6 to 40.6
Manganese (Mn), % 0.1 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
34 to 36
Nitrogen (N), % 0
0.12 to 0.18
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
1.2 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 0.8 to 1.2
0