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Nickel 689 vs. S44627 Stainless Steel

Nickel 689 belongs to the nickel alloys classification, while S44627 stainless steel belongs to the iron 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 (7, in this case) are not shown.

For each property being compared, the top bar is nickel 689 and the bottom bar is S44627 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
170
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 23
24
Fatigue Strength, MPa 420
200
Poisson's Ratio 0.29
0.27
Reduction in Area, % 21
51
Shear Modulus, GPa 80
80
Shear Strength, MPa 790
310
Tensile Strength: Ultimate (UTS), MPa 1250
490
Tensile Strength: Yield (Proof), MPa 690
300

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 990
1100
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
14
Density, g/cm3 8.5
7.7
Embodied Carbon, kg CO2/kg material 11
2.9
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 330
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
220
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 41
18
Strength to Weight: Bending, points 30
18
Thermal Shock Resistance, points 35
16

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0 to 0.010
Chromium (Cr), % 18 to 20
25 to 27.5
Cobalt (Co), % 9.0 to 11
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 5.0
69.2 to 74.2
Manganese (Mn), % 0 to 0.5
0 to 0.4
Molybdenum (Mo), % 9.0 to 10.5
0.75 to 1.5
Nickel (Ni), % 48.3 to 60.9
0 to 0.5
Niobium (Nb), % 0
0.050 to 0.2
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.015
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 2.3 to 2.8
0