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S32750 Stainless Steel vs. SAE-AISI 8617 Steel

Both S32750 stainless steel and SAE-AISI 8617 steel are iron alloys. Both are furnished in the annealed condition. They have 65% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S32750 stainless steel and the bottom bar is SAE-AISI 8617 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
140
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 17
25
Fatigue Strength, MPa 360
230
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 530
300
Tensile Strength: Ultimate (UTS), MPa 860
470
Tensile Strength: Yield (Proof), MPa 590
320

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
43
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 21
2.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.1
1.5
Embodied Energy, MJ/kg 56
20
Embodied Water, L/kg 180
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 860
270
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 25
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.15 to 0.2
Chromium (Cr), % 24 to 26
0.4 to 0.6
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 58.1 to 66.8
96.9 to 98.1
Manganese (Mn), % 0 to 1.2
0.7 to 0.9
Molybdenum (Mo), % 3.0 to 5.0
0.15 to 0.25
Nickel (Ni), % 6.0 to 8.0
0.4 to 0.7
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.8
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040