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ACI-ASTM CA15 Steel vs. Nickel 686

ACI-ASTM CA15 steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA15 steel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 21
51
Fatigue Strength, MPa 370
410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 700
780
Tensile Strength: Yield (Proof), MPa 570
350

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 750
980
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1500
1340
Specific Heat Capacity, J/kg-K 480
420
Thermal Conductivity, W/m-K 25
9.8
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
70
Density, g/cm3 7.7
9.0
Embodied Carbon, kg CO2/kg material 2.0
12
Embodied Energy, MJ/kg 28
170
Embodied Water, L/kg 100
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
320
Resilience: Unit (Modulus of Resilience), kJ/m3 820
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 25
24
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 6.7
2.6
Thermal Shock Resistance, points 26
21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.010
Chromium (Cr), % 11.5 to 14
19 to 23
Iron (Fe), % 81.8 to 88.5
0 to 5.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 0 to 0.5
15 to 17
Nickel (Ni), % 0 to 1.0
49.5 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 0.080
Sulfur (S), % 0 to 0.040
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4