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ASTM Grade HP Steel vs. R60705 Alloy

ASTM grade HP steel belongs to the iron alloys classification, while R60705 alloy belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is R60705 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
98
Elongation at Break, % 5.1
18
Fatigue Strength, MPa 130
290
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 78
37
Tensile Strength: Ultimate (UTS), MPa 490
540
Tensile Strength: Yield (Proof), MPa 260
430

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 12
17
Thermal Expansion, µm/m-K 16
6.3

Otherwise Unclassified Properties

Density, g/cm3 7.9
6.7
Embodied Water, L/kg 220
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
90
Resilience: Unit (Modulus of Resilience), kJ/m3 170
950
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 17
22
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 3.2
9.5
Thermal Shock Resistance, points 11
63

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.050
Chromium (Cr), % 24 to 28
0 to 0.2
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 29.2 to 42.7
0 to 0.2
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
0
Niobium (Nb), % 0
2.0 to 3.0
Nitrogen (N), % 0
0 to 0.025
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.5
0
Sulfur (S), % 0 to 0.040
0
Zirconium (Zr), % 0
91 to 98