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SAE-AISI S4 Steel vs. S44735 Stainless Steel

Both SAE-AISI S4 steel and S44735 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI S4 steel and the bottom bar is S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
82
Tensile Strength: Ultimate (UTS), MPa 670 to 2140
630

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
21
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
4.4
Embodied Energy, MJ/kg 29
61
Embodied Water, L/kg 48
180

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 24 to 77
23
Strength to Weight: Bending, points 22 to 48
21
Thermal Shock Resistance, points 20 to 65
20

Alloy Composition

Carbon (C), % 0.5 to 0.65
0 to 0.030
Chromium (Cr), % 0.1 to 0.5
28 to 30
Iron (Fe), % 95.2 to 96.9
60.7 to 68.4
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
3.6 to 4.2
Nickel (Ni), % 0
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 1.8 to 2.3
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0
Vanadium (V), % 0.15 to 0.35
0