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ASTM Grade HP Steel vs. AWS BVAu-7

ASTM grade HP steel belongs to the iron alloys classification, while AWS BVAu-7 belongs to the otherwise unclassified metals. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is AWS BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
130
Poisson's Ratio 0.28
0.38
Shear Modulus, GPa 78
45
Tensile Strength: Ultimate (UTS), MPa 490
200

Thermal Properties

Latent Heat of Fusion, J/g 320
140
Melting Completion (Liquidus), °C 1370
1120
Melting Onset (Solidus), °C 1330
1100
Specific Heat Capacity, J/kg-K 480
240
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Density, g/cm3 7.9
15

Common Calculations

Stiffness to Weight: Axial, points 14
4.7
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 17
3.7
Strength to Weight: Bending, points 17
5.1
Thermal Shock Resistance, points 11
8.9

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0.35 to 0.75
0 to 0.0050
Chromium (Cr), % 24 to 28
0
Cobalt (Co), % 0
0 to 0.060
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 29.2 to 42.7
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
Phosphorus (P), % 0 to 0.040
0 to 0.0020
Silicon (Si), % 0 to 2.5
0
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.0010