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R60704 Alloy vs. SAE-AISI 8660 Steel

R60704 alloy belongs to the otherwise unclassified metals classification, while SAE-AISI 8660 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R60704 alloy and the bottom bar is SAE-AISI 8660 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 97
190
Elongation at Break, % 16
12
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
73
Tensile Strength: Ultimate (UTS), MPa 470
660
Tensile Strength: Yield (Proof), MPa 270
550

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 22
39
Thermal Expansion, µm/m-K 6.0
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 460
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
73
Resilience: Unit (Modulus of Resilience), kJ/m3 370
800
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 20
23
Strength to Weight: Bending, points 20
21
Thermal Diffusivity, mm2/s 12
10
Thermal Shock Resistance, points 58
19

Alloy Composition

Carbon (C), % 0 to 0.050
0.56 to 0.64
Chromium (Cr), % 0.2 to 0.4
0.4 to 0.6
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0.2 to 0.4
96.4 to 97.6
Manganese (Mn), % 0
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Nitrogen (N), % 0 to 0.025
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 1.0 to 2.0
0
Zirconium (Zr), % 93 to 98.8
0