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Nickel 693 vs. AISI 312 Stainless Steel

Nickel 693 belongs to the nickel alloys classification, while AISI 312 stainless steel belongs to the iron alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is nickel 693 and the bottom bar is AISI 312 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
28
Fatigue Strength, MPa 230
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Shear Strength, MPa 440
510
Tensile Strength: Ultimate (UTS), MPa 660
780
Tensile Strength: Yield (Proof), MPa 310
510

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1350
1430
Melting Onset (Solidus), °C 1310
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 9.1
16
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 60
17
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 9.9
3.4
Embodied Energy, MJ/kg 140
48
Embodied Water, L/kg 320
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
190
Resilience: Unit (Modulus of Resilience), kJ/m3 250
640
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
28
Strength to Weight: Bending, points 21
24
Thermal Diffusivity, mm2/s 2.3
4.3
Thermal Shock Resistance, points 19
21

Alloy Composition

Aluminum (Al), % 2.5 to 4.0
0
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 27 to 31
24 to 26
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 2.5 to 6.0
62.2 to 69.2
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
1.2 to 2.0
Nickel (Ni), % 53.3 to 67.5
5.5 to 6.5
Niobium (Nb), % 0.5 to 2.5
0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 1.0
0