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AWS E308H vs. EN 1.8550 Steel

Both AWS E308H and EN 1.8550 steel are iron alloys. They have 71% of their average alloy composition in common. There are 25 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 E308H and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
11
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 620
1000

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
40
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 16
3.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
1.7
Embodied Energy, MJ/kg 46
23
Embodied Water, L/kg 150
67

Common Calculations

PREN (Pitting Resistance) 21
2.3
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
36
Strength to Weight: Bending, points 21
29
Thermal Diffusivity, mm2/s 4.2
11
Thermal Shock Resistance, points 16
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.040 to 0.080
0.3 to 0.37
Chromium (Cr), % 18 to 21
1.5 to 1.8
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 62.9 to 72.5
94.4 to 96.3
Manganese (Mn), % 0.5 to 2.5
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.75
0.15 to 0.25
Nickel (Ni), % 9.0 to 11
0.85 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035