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SAE-AISI T4 Steel vs. S30530 Stainless Steel

Both SAE-AISI T4 steel and S30530 stainless steel are iron alloys. They have 71% 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 S30530 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 800 to 2140
590

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1810
1410
Melting Onset (Solidus), °C 1750
1370
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 55
18
Density, g/cm3 9.4
7.8
Embodied Carbon, kg CO2/kg material 8.5
3.4
Embodied Energy, MJ/kg 130
48
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 37
22
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 24 to 64
21
Strength to Weight: Bending, points 20 to 39
20
Thermal Diffusivity, mm2/s 5.4
4.1
Thermal Shock Resistance, points 24 to 64
13

Alloy Composition

Carbon (C), % 0.7 to 0.8
0 to 0.080
Chromium (Cr), % 3.8 to 4.5
17 to 20.5
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0.75 to 3.5
Iron (Fe), % 66.3 to 72.3
58.4 to 72.5
Manganese (Mn), % 0.1 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
8.5 to 11.5
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.4
0.5 to 2.5
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