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AWS E33-31 vs. AWS E308H

Both AWS E33-31 and AWS E308H are iron alloys. Both are furnished in the as-welded condition. They have 62% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AWS E33-31 and the bottom bar is AWS E308H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 29
40
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
77
Tensile Strength: Ultimate (UTS), MPa 810
620

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 14
14

Otherwise Unclassified Properties

Base Metal Price, % relative 36
16
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 6.0
3.2
Embodied Energy, MJ/kg 86
46
Embodied Water, L/kg 260
150

Common Calculations

PREN (Pitting Resistance) 44
21
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
22
Strength to Weight: Bending, points 24
21
Thermal Shock Resistance, points 19
16

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.080
Chromium (Cr), % 31 to 35
18 to 21
Copper (Cu), % 0.4 to 0.8
0 to 0.75
Iron (Fe), % 24.7 to 34.8
62.9 to 72.5
Manganese (Mn), % 2.5 to 4.0
0.5 to 2.5
Molybdenum (Mo), % 1.0 to 2.0
0 to 0.75
Nickel (Ni), % 30 to 32
9.0 to 11
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.9
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030