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ACI-ASTM CA15M Steel vs. Nickel 725

ACI-ASTM CA15M steel belongs to the iron alloys classification, while nickel 725 belongs to the nickel alloys. They have a modest 23% 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 (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA15M steel and the bottom bar is nickel 725.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 20
34
Fatigue Strength, MPa 330
260
Poisson's Ratio 0.28
0.29
Reduction in Area, % 34
45
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 690
860
Tensile Strength: Yield (Proof), MPa 510
350

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 760
980
Melting Completion (Liquidus), °C 1450
1340
Melting Onset (Solidus), °C 1410
1270
Specific Heat Capacity, J/kg-K 480
440
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
75
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 2.1
13
Embodied Energy, MJ/kg 29
190
Embodied Water, L/kg 100
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
240
Resilience: Unit (Modulus of Resilience), kJ/m3 670
300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25
28
Strength to Weight: Bending, points 22
24
Thermal Shock Resistance, points 25
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 11.5 to 14
19 to 22.5
Iron (Fe), % 82.1 to 88.4
2.3 to 15.3
Manganese (Mn), % 0 to 1.0
0 to 0.35
Molybdenum (Mo), % 0.15 to 1.0
7.0 to 9.5
Nickel (Ni), % 0 to 1.0
55 to 59
Niobium (Nb), % 0
2.8 to 4.0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 0.65
0 to 0.2
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.7