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ASTM Grade HF Steel vs. AWS BAu-1

ASTM grade HF steel belongs to the iron alloys classification, while AWS BAu-1 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HF steel and the bottom bar is AWS BAu-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.28
0.37
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 550
210

Thermal Properties

Latent Heat of Fusion, J/g 300
150
Melting Completion (Liquidus), °C 1410
1020
Melting Onset (Solidus), °C 1370
990
Specific Heat Capacity, J/kg-K 480
290
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Density, g/cm3 7.7
13

Common Calculations

Stiffness to Weight: Axial, points 14
4.7
Stiffness to Weight: Bending, points 25
12
Strength to Weight: Axial, points 20
4.5
Strength to Weight: Bending, points 19
6.1
Thermal Shock Resistance, points 12
8.5

Alloy Composition


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Carbon (C), % 0.2 to 0.4
0
Chromium (Cr), % 18 to 23
0
Copper (Cu), % 0
61.9 to 63
Gold (Au), % 0
37 to 38
Iron (Fe), % 60 to 73.8
0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Residuals, % 0
0 to 0.15