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EN 1.7221 Steel vs. R04295 Alloy

EN 1.7221 steel belongs to the iron alloys classification, while R04295 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.7221 steel and the bottom bar is R04295 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 11 to 17
22
Poisson's Ratio 0.29
0.38
Shear Modulus, GPa 73
37
Tensile Strength: Ultimate (UTS), MPa 650 to 780
410
Tensile Strength: Yield (Proof), MPa 430 to 630
300

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Specific Heat Capacity, J/kg-K 470
260
Thermal Expansion, µm/m-K 13
7.2

Otherwise Unclassified Properties

Density, g/cm3 7.8
9.0
Embodied Water, L/kg 51
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 98
84
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 1050
430
Stiffness to Weight: Axial, points 13
6.3
Stiffness to Weight: Bending, points 24
17
Strength to Weight: Axial, points 23 to 27
13
Strength to Weight: Bending, points 21 to 24
14
Thermal Shock Resistance, points 19 to 23
40

Alloy Composition

Carbon (C), % 0.22 to 0.29
0 to 0.015
Chromium (Cr), % 0.8 to 1.2
0
Hafnium (Hf), % 0
9.0 to 11
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 96.8 to 98.3
0
Manganese (Mn), % 0.5 to 0.8
0
Molybdenum (Mo), % 0.15 to 0.3
0
Niobium (Nb), % 0
85.9 to 90.3
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0.7 to 1.3
Tungsten (W), % 0
0 to 0.5
Zirconium (Zr), % 0
0 to 0.7