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SAE-AISI 8617 Steel vs. AISI 308L Stainless Steel

Both SAE-AISI 8617 steel and AISI 308L stainless steel are iron alloys. Both are furnished in the annealed condition. They have 69% 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 SAE-AISI 8617 steel and the bottom bar is AISI 308L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
34
Fatigue Strength, MPa 230
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 300
380
Tensile Strength: Ultimate (UTS), MPa 470
580
Tensile Strength: Yield (Proof), MPa 320
230

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 410
1010
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 43
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
3.2
Embodied Energy, MJ/kg 20
45
Embodied Water, L/kg 50
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
160
Resilience: Unit (Modulus of Resilience), kJ/m3 270
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 12
4.1
Thermal Shock Resistance, points 15
13

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.080
Chromium (Cr), % 0.4 to 0.6
19.5 to 22
Iron (Fe), % 96.9 to 98.1
63.8 to 70.5
Manganese (Mn), % 0.7 to 0.9
1.0 to 2.5
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
9.0 to 11
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0.25 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030