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SAE-AISI 6118 Steel vs. N08367 Stainless Steel

Both SAE-AISI 6118 steel and N08367 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 47% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 6118 steel and the bottom bar is N08367 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 23
34
Fatigue Strength, MPa 210
280
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Shear Strength, MPa 300
490
Tensile Strength: Ultimate (UTS), MPa 470
740
Tensile Strength: Yield (Proof), MPa 290
350

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 45
12
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.7
6.2
Embodied Energy, MJ/kg 23
84
Embodied Water, L/kg 49
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
210
Resilience: Unit (Modulus of Resilience), kJ/m3 220
290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 12
3.2
Thermal Shock Resistance, points 14
17

Alloy Composition

Carbon (C), % 0.16 to 0.21
0 to 0.030
Chromium (Cr), % 0.5 to 0.7
20 to 22
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 97.8 to 98.6
41.4 to 50.3
Manganese (Mn), % 0.5 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0.1 to 0.15
0