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SAE-AISI T4 Steel vs. S30435 Stainless Steel

Both SAE-AISI T4 steel and S30435 stainless steel are iron alloys. They have 74% 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 S30435 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 800 to 2140
510

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1810
1420
Melting Onset (Solidus), °C 1750
1380
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 55
14
Density, g/cm3 9.4
7.8
Embodied Carbon, kg CO2/kg material 8.5
2.9
Embodied Energy, MJ/kg 130
40
Embodied Water, L/kg 120
140

Common Calculations

PREN (Pitting Resistance) 37
17
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 24 to 64
18
Strength to Weight: Bending, points 20 to 39
18
Thermal Diffusivity, mm2/s 5.4
4.2
Thermal Shock Resistance, points 24 to 64
12

Alloy Composition

Carbon (C), % 0.7 to 0.8
0 to 0.080
Chromium (Cr), % 3.8 to 4.5
16 to 18
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
1.5 to 3.0
Iron (Fe), % 66.3 to 72.3
66.9 to 75.5
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
7.0 to 9.0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.4
0 to 1.0
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