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Nickel 684 vs. SAE-AISI 1045 Steel

Nickel 684 belongs to the nickel alloys classification, while SAE-AISI 1045 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is SAE-AISI 1045 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
13 to 18
Fatigue Strength, MPa 390
220 to 370
Poisson's Ratio 0.29
0.29
Reduction in Area, % 17
40 to 51
Shear Modulus, GPa 76
72
Shear Strength, MPa 710
380 to 410
Tensile Strength: Ultimate (UTS), MPa 1190
620 to 680
Tensile Strength: Yield (Proof), MPa 800
330 to 580

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1000
400
Melting Completion (Liquidus), °C 1370
1460
Melting Onset (Solidus), °C 1320
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
1.8
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 10
1.4
Embodied Energy, MJ/kg 140
18
Embodied Water, L/kg 360
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
84 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 1610
300 to 900
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 40
22 to 24
Strength to Weight: Bending, points 30
21 to 22
Thermal Shock Resistance, points 34
20 to 22

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0.43 to 0.5
Chromium (Cr), % 15 to 20
0
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 4.0
98.5 to 99
Manganese (Mn), % 0 to 0.75
0.6 to 0.9
Molybdenum (Mo), % 3.0 to 5.0
0
Nickel (Ni), % 42.7 to 64
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.015
0 to 0.050
Titanium (Ti), % 2.5 to 3.3
0