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SAE-AISI S4 Steel vs. AISI 302 Stainless Steel

Both SAE-AISI S4 steel and AISI 302 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI S4 steel and the bottom bar is AISI 302 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Tensile Strength: Ultimate (UTS), MPa 670 to 2140
580 to 1430

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 44
16
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
15
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
3.0
Embodied Energy, MJ/kg 29
42
Embodied Water, L/kg 48
140

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 77
21 to 51
Strength to Weight: Bending, points 22 to 48
20 to 36
Thermal Diffusivity, mm2/s 12
4.4
Thermal Shock Resistance, points 20 to 65
12 to 31

Alloy Composition

Carbon (C), % 0.5 to 0.65
0 to 0.15
Chromium (Cr), % 0.1 to 0.5
17 to 19
Iron (Fe), % 95.2 to 96.9
67.9 to 75
Manganese (Mn), % 0.6 to 1.0
0 to 2.0
Nickel (Ni), % 0
8.0 to 10
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 1.8 to 2.3
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.15 to 0.35
0

Comparable Variants