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ASTM Grade HP Steel vs. R04295 Alloy

ASTM grade HP 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 (12, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is R04295 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 5.1
22
Poisson's Ratio 0.28
0.38
Shear Modulus, GPa 78
37
Tensile Strength: Ultimate (UTS), MPa 490
410
Tensile Strength: Yield (Proof), MPa 260
300

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Specific Heat Capacity, J/kg-K 480
260
Thermal Expansion, µm/m-K 16
7.2

Otherwise Unclassified Properties

Density, g/cm3 7.9
9.0
Embodied Water, L/kg 220
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
84
Resilience: Unit (Modulus of Resilience), kJ/m3 170
430
Stiffness to Weight: Axial, points 14
6.3
Stiffness to Weight: Bending, points 25
17
Strength to Weight: Axial, points 17
13
Strength to Weight: Bending, points 17
14
Thermal Shock Resistance, points 11
40

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.015
Chromium (Cr), % 24 to 28
0
Hafnium (Hf), % 0
9.0 to 11
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 29.2 to 42.7
0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
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 0.040
0
Silicon (Si), % 0 to 2.5
0
Sulfur (S), % 0 to 0.040
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