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AWS E309H vs. ASTM A387 Grade 11 Steel

Both AWS E309H and ASTM A387 grade 11 steel are iron alloys. They have 63% 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 E309H and the bottom bar is ASTM A387 grade 11 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
25
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 620
500 to 600

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
2.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.7
1.6
Embodied Energy, MJ/kg 52
21
Embodied Water, L/kg 180
53

Common Calculations

PREN (Pitting Resistance) 25
3.1
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
18 to 21
Strength to Weight: Bending, points 21
18 to 20
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 16
15 to 18

Alloy Composition

Carbon (C), % 0.040 to 0.15
0.050 to 0.17
Chromium (Cr), % 22 to 25
1.0 to 1.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 55.8 to 65.5
96.2 to 97.6
Manganese (Mn), % 0.5 to 2.5
0.4 to 0.65
Molybdenum (Mo), % 0 to 0.75
0.45 to 0.65
Nickel (Ni), % 12 to 14
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0.5 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025