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ASTM Grade HD Steel vs. AWS BAg-4

ASTM grade HD steel belongs to the iron alloys classification, while AWS BAg-4 belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HD steel and the bottom bar is AWS BAg-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
91
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 80
34
Tensile Strength: Ultimate (UTS), MPa 590
150

Thermal Properties

Latent Heat of Fusion, J/g 310
140
Melting Completion (Liquidus), °C 1410
780
Melting Onset (Solidus), °C 1370
670
Specific Heat Capacity, J/kg-K 490
330
Thermal Expansion, µm/m-K 11
21

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.9
Embodied Carbon, kg CO2/kg material 3.1
40
Embodied Energy, MJ/kg 45
630

Common Calculations

Stiffness to Weight: Axial, points 15
5.7
Stiffness to Weight: Bending, points 26
17
Strength to Weight: Axial, points 21
4.7
Strength to Weight: Bending, points 20
7.1
Thermal Shock Resistance, points 19
5.7

Alloy Composition

Carbon (C), % 0 to 0.5
0
Chromium (Cr), % 26 to 30
0
Copper (Cu), % 0
29 to 31
Iron (Fe), % 58.4 to 70
0
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 4.0 to 7.0
1.5 to 2.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Silver (Ag), % 0
39 to 41
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
26 to 30
Residuals, % 0
0 to 0.15