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ASTM A387 Grade 2 Steel vs. AWS E308H

Both ASTM A387 grade 2 steel and AWS E308H are iron alloys. They have 70% 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 ASTM A387 grade 2 steel and the bottom bar is AWS E308H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
40
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 470 to 550
620

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
16
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
16
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.2
Embodied Energy, MJ/kg 20
46
Embodied Water, L/kg 50
150

Common Calculations

PREN (Pitting Resistance) 2.4
21
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16 to 20
22
Strength to Weight: Bending, points 17 to 19
21
Thermal Diffusivity, mm2/s 12
4.2
Thermal Shock Resistance, points 14 to 16
16

Alloy Composition

Carbon (C), % 0.050 to 0.21
0.040 to 0.080
Chromium (Cr), % 0.5 to 0.8
18 to 21
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 97.1 to 98.3
62.9 to 72.5
Manganese (Mn), % 0.55 to 0.8
0.5 to 2.5
Molybdenum (Mo), % 0.45 to 0.6
0 to 0.75
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030