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Nickel 685 vs. Automotive Malleable Cast Iron

Nickel 685 belongs to the nickel alloys classification, while automotive malleable cast iron belongs to the iron alloys. There are 26 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 685 and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
130 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 17
1.0 to 10
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
70
Tensile Strength: Ultimate (UTS), MPa 1250
350 to 720
Tensile Strength: Yield (Proof), MPa 850
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1380
1410
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 13
41
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 75
1.9
Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 10
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 340
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
130 to 950
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 42
13 to 26
Strength to Weight: Bending, points 31
14 to 24
Thermal Diffusivity, mm2/s 3.3
11
Thermal Shock Resistance, points 37
9.9 to 21

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
2.2 to 2.9
Chromium (Cr), % 18 to 21
0
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 2.0
93.6 to 96.7
Manganese (Mn), % 0 to 1.0
0.15 to 1.3
Molybdenum (Mo), % 3.5 to 5.0
0
Nickel (Ni), % 49.6 to 62.5
0
Phosphorus (P), % 0 to 0.030
0.020 to 0.15
Silicon (Si), % 0 to 0.75
0.9 to 1.9
Sulfur (S), % 0 to 0.030
0.020 to 0.2
Titanium (Ti), % 2.8 to 3.3
0
Zinc (Zn), % 0.020 to 0.12
0