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ACI-ASTM CG3M Steel vs. Nickel 684

ACI-ASTM CG3M steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG3M steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
310
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
11
Fatigue Strength, MPa 200
390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 580
1190
Tensile Strength: Yield (Proof), MPa 270
800

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1020
1000
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1400
1320
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 20
75
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 4.1
10
Embodied Energy, MJ/kg 56
140
Embodied Water, L/kg 160
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 20
40
Strength to Weight: Bending, points 20
30
Thermal Shock Resistance, points 13
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 18 to 21
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 58.9 to 70
0 to 4.0
Manganese (Mn), % 0 to 1.5
0 to 0.75
Molybdenum (Mo), % 3.0 to 4.0
3.0 to 5.0
Nickel (Ni), % 9.0 to 13
42.7 to 64
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3