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Austempered Cast Iron vs. R60706 Alloy

Austempered cast iron belongs to the iron alloys classification, while R60706 alloy belongs to the otherwise unclassified metals. There are 20 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 austempered cast iron and the bottom bar is R60706 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
98
Elongation at Break, % 1.1 to 13
16
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 62 to 69
37
Tensile Strength: Ultimate (UTS), MPa 860 to 1800
580
Tensile Strength: Yield (Proof), MPa 560 to 1460
390

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Specific Heat Capacity, J/kg-K 490
270
Thermal Conductivity, W/m-K 42
17
Thermal Expansion, µm/m-K 13
6.3

Otherwise Unclassified Properties

Density, g/cm3 7.5
6.7
Embodied Water, L/kg 48
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 95
82
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 3970
760
Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 32 to 66
24
Strength to Weight: Bending, points 27 to 44
23
Thermal Diffusivity, mm2/s 11
9.5
Thermal Shock Resistance, points 25 to 53
67

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Arsenic (As), % 0 to 0.020
0
Carbon (C), % 3.4 to 3.8
0 to 0.050
Chromium (Cr), % 0 to 0.1
0 to 0.2
Copper (Cu), % 0 to 0.8
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 89.6 to 94
0 to 0.2
Magnesium (Mg), % 0 to 0.040
0
Manganese (Mn), % 0.3 to 0.4
0
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 0 to 2.0
0
Niobium (Nb), % 0
2.0 to 3.0
Nitrogen (N), % 0
0 to 0.025
Oxygen (O), % 0
0 to 0.16
Phosphorus (P), % 0 to 0.040
0
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
0
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0 to 0.020
0
Vanadium (V), % 0 to 0.1
0
Zirconium (Zr), % 0
91 to 98