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SAE-AISI S1 Steel vs. S44635 Stainless Steel

Both SAE-AISI S1 steel and S44635 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI S1 steel and the bottom bar is S44635 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 73
81
Tensile Strength: Ultimate (UTS), MPa 690 to 1840
710

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
16
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
22
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.6
4.4
Embodied Energy, MJ/kg 37
62
Embodied Water, L/kg 56
170

Common Calculations

PREN (Pitting Resistance) 5.9
39
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 64
25
Strength to Weight: Bending, points 22 to 42
23
Thermal Diffusivity, mm2/s 11
4.4
Thermal Shock Resistance, points 21 to 56
23

Alloy Composition

Carbon (C), % 0.4 to 0.55
0 to 0.025
Chromium (Cr), % 1.0 to 1.8
24.5 to 26
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 91.6 to 96.7
61.5 to 68.5
Manganese (Mn), % 0.1 to 0.4
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
3.5 to 4.5
Nickel (Ni), % 0 to 0.3
3.5 to 4.5
Niobium (Nb), % 0
0.2 to 0.8
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 1.2
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8
Tungsten (W), % 1.5 to 3.0
0
Vanadium (V), % 0.15 to 0.3
0