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S32550 Stainless Steel vs. SAE-AISI S6 Steel

Both S32550 stainless steel and SAE-AISI S6 steel are iron alloys. They have 65% of their average alloy composition in common. There are 24 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 S32550 stainless steel and the bottom bar is SAE-AISI S6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 860
670 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
41
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 20
3.2
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.8
2.3
Embodied Energy, MJ/kg 53
33
Embodied Water, L/kg 180
56

Common Calculations

PREN (Pitting Resistance) 40
2.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
24 to 70
Strength to Weight: Bending, points 26
22 to 45
Thermal Diffusivity, mm2/s 4.4
11
Thermal Shock Resistance, points 23
22 to 64

Alloy Composition

Carbon (C), % 0 to 0.040
0.4 to 0.5
Chromium (Cr), % 24 to 27
1.2 to 1.5
Copper (Cu), % 1.5 to 2.5
0 to 0.25
Iron (Fe), % 57.2 to 67
92.8 to 94.7
Manganese (Mn), % 0 to 1.5
1.2 to 1.5
Molybdenum (Mo), % 2.9 to 3.9
0.3 to 0.5
Nickel (Ni), % 4.5 to 6.5
0
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
2.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.2 to 0.4