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AWS E330H vs. ASTM A387 Grade 9 Steel

Both AWS E330H and ASTM A387 grade 9 steel are iron alloys. They have 57% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS E330H and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
20 to 21
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 690
500 to 600

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
10

Otherwise Unclassified Properties

Base Metal Price, % relative 30
6.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.4
2.1
Embodied Energy, MJ/kg 76
28
Embodied Water, L/kg 180
87

Common Calculations

PREN (Pitting Resistance) 17
12
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
18 to 21
Strength to Weight: Bending, points 22
18 to 20
Thermal Diffusivity, mm2/s 3.2
6.9
Thermal Shock Resistance, points 19
14 to 17

Alloy Composition

Carbon (C), % 0.35 to 0.45
0 to 0.15
Chromium (Cr), % 14 to 17
8.0 to 10
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 40.5 to 51.7
87.1 to 90.8
Manganese (Mn), % 1.0 to 2.5
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.75
0.9 to 1.1
Nickel (Ni), % 33 to 37
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0
0 to 0.040