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R60704 Alloy vs. EN 1.7221 Steel

R60704 alloy belongs to the otherwise unclassified metals classification, while EN 1.7221 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 EN 1.7221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 97
190
Elongation at Break, % 16
11 to 17
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
73
Tensile Strength: Ultimate (UTS), MPa 470
650 to 780
Tensile Strength: Yield (Proof), MPa 270
430 to 630

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 22
44
Thermal Expansion, µm/m-K 6.0
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 460
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
83 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 370
490 to 1050
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 20
23 to 27
Strength to Weight: Bending, points 20
21 to 24
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 58
19 to 23

Alloy Composition

Carbon (C), % 0 to 0.050
0.22 to 0.29
Chromium (Cr), % 0.2 to 0.4
0.8 to 1.2
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0.2 to 0.4
96.8 to 98.3
Manganese (Mn), % 0
0.5 to 0.8
Molybdenum (Mo), % 0
0.15 to 0.3
Nitrogen (N), % 0 to 0.025
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.0 to 2.0
0
Zirconium (Zr), % 93 to 98.8
0