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ACI-ASTM CA6NM Steel vs. Nickel 689

ACI-ASTM CA6NM steel belongs to the iron alloys classification, while nickel 689 belongs to the nickel alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 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 ACI-ASTM CA6NM steel and the bottom bar is nickel 689.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
350
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17
23
Fatigue Strength, MPa 380
420
Poisson's Ratio 0.28
0.29
Reduction in Area, % 40
21
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 850
1250
Tensile Strength: Yield (Proof), MPa 620
690

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 770
990
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
70
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 2.5
11
Embodied Energy, MJ/kg 34
150
Embodied Water, L/kg 110
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
240
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
1170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 30
41
Strength to Weight: Bending, points 26
30
Thermal Shock Resistance, points 31
35

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.060
0.1 to 0.2
Chromium (Cr), % 11.5 to 14
18 to 20
Cobalt (Co), % 0
9.0 to 11
Iron (Fe), % 78.4 to 84.6
0 to 5.0
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 0.4 to 1.0
9.0 to 10.5
Nickel (Ni), % 3.5 to 4.5
48.3 to 60.9
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.3 to 2.8