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AWS E630 vs. AWS E385

Both AWS E630 and AWS E385 are iron alloys. They have 70% of their average alloy composition in common.

For each property being compared, the top bar is AWS E630 and the bottom bar is AWS E385.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 1040
580

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 14
31
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.8
5.8
Embodied Energy, MJ/kg 40
79
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 18
36
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 37
20
Strength to Weight: Bending, points 29
19
Thermal Diffusivity, mm2/s 4.5
3.6
Thermal Shock Resistance, points 28
15

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 16 to 16.8
19.5 to 21.5
Copper (Cu), % 3.3 to 4.0
1.2 to 2.0
Iron (Fe), % 71.6 to 75.9
41.8 to 50.1
Manganese (Mn), % 0.25 to 0.75
1.0 to 2.5
Molybdenum (Mo), % 0 to 0.75
4.2 to 5.2
Nickel (Ni), % 4.5 to 5.0
24 to 26
Niobium (Nb), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.020