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Nickel 689 vs. ASTM A387 Grade 91 Class 2

Nickel 689 belongs to the nickel alloys classification, while ASTM A387 grade 91 class 2 belongs to the iron alloys. There are 27 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 nickel 689 and the bottom bar is ASTM A387 grade 91 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
200
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
20
Fatigue Strength, MPa 420
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
75
Shear Strength, MPa 790
420
Tensile Strength: Ultimate (UTS), MPa 1250
670
Tensile Strength: Yield (Proof), MPa 690
470

Thermal Properties

Latent Heat of Fusion, J/g 330
270
Maximum Temperature: Mechanical, °C 990
600
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
7.0
Density, g/cm3 8.5
7.8
Embodied Carbon, kg CO2/kg material 11
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 330
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 41
24
Strength to Weight: Bending, points 30
22
Thermal Shock Resistance, points 35
19

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0 to 0.020
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0.080 to 0.12
Chromium (Cr), % 18 to 20
8.0 to 9.5
Cobalt (Co), % 9.0 to 11
0
Iron (Fe), % 0 to 5.0
87.3 to 90.3
Manganese (Mn), % 0 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 9.0 to 10.5
0.85 to 1.1
Nickel (Ni), % 48.3 to 60.9
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.015
0 to 0.020
Silicon (Si), % 0 to 0.5
0.2 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 2.3 to 2.8
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010