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AWS E330H vs. ASTM A242 HSLA Steel

Both AWS E330H and ASTM A242 HSLA steel are iron alloys. They have 47% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS E330H and the bottom bar is ASTM A242 HSLA steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
22
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 690
490

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 30
1.9
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.4
1.4
Embodied Energy, MJ/kg 76
18
Embodied Water, L/kg 180
46

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 0.35 to 0.45
0 to 0.15
Chromium (Cr), % 14 to 17
0
Copper (Cu), % 0 to 0.75
0.2 to 0.45
Iron (Fe), % 40.5 to 51.7
98.2 to 99.8
Manganese (Mn), % 1.0 to 2.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 33 to 37
0
Phosphorus (P), % 0 to 0.040
0 to 0.15
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050