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S46500 Stainless Steel vs. Nickel 718

S46500 stainless steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. They have 43% of their average alloy composition in common. There are 26 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 S46500 stainless steel and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 2.3 to 14
12 to 50
Fatigue Strength, MPa 550 to 890
460 to 760
Poisson's Ratio 0.28
0.29
Rockwell C Hardness 29 to 54
40
Shear Modulus, GPa 75
75
Shear Strength, MPa 730 to 1120
660 to 950
Tensile Strength: Ultimate (UTS), MPa 1260 to 1930
930 to 1530
Tensile Strength: Yield (Proof), MPa 1120 to 1810
510 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Mechanical, °C 780
980
Melting Completion (Liquidus), °C 1450
1340
Melting Onset (Solidus), °C 1410
1260
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
75
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 3.6
13
Embodied Energy, MJ/kg 51
190
Embodied Water, L/kg 120
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 210
140 to 390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 44 to 68
31 to 51
Strength to Weight: Bending, points 33 to 44
25 to 35
Thermal Shock Resistance, points 44 to 67
27 to 44

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 11 to 12.5
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 72.6 to 76.1
11.1 to 24.6
Manganese (Mn), % 0 to 0.25
0 to 0.35
Molybdenum (Mo), % 0.75 to 1.3
2.8 to 3.3
Nickel (Ni), % 10.7 to 11.3
50 to 55
Niobium (Nb), % 0
4.8 to 5.5
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.015
0 to 0.015
Silicon (Si), % 0 to 0.25
0 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 1.5 to 1.8
0.65 to 1.2