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Nickel 686 vs. ASTM A229 Spring Steel

Nickel 686 belongs to the nickel alloys classification, while ASTM A229 spring steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 51
14
Fatigue Strength, MPa 410
710 to 790
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 560
1020 to 1140
Tensile Strength: Ultimate (UTS), MPa 780
1690 to 1890
Tensile Strength: Yield (Proof), MPa 350
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1380
1450
Melting Onset (Solidus), °C 1340
1410
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 9.8
50
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
1.8
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 12
1.4
Embodied Energy, MJ/kg 170
19
Embodied Water, L/kg 300
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 280
3260 to 4080
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24
60 to 67
Strength to Weight: Bending, points 21
40 to 43
Thermal Diffusivity, mm2/s 2.6
14
Thermal Shock Resistance, points 21
54 to 60

Alloy Composition

Carbon (C), % 0 to 0.010
0.55 to 0.85
Chromium (Cr), % 19 to 23
0
Iron (Fe), % 0 to 5.0
97.5 to 99
Manganese (Mn), % 0 to 0.75
0.3 to 1.2
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.080
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.050
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0