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AWS E630 vs. R30556 Alloy

Both AWS E630 and R30556 alloy are iron alloys. They have 52% 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 E630 and the bottom bar is R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 8.0
45
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 1040
780

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1380
1330
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 17
11
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 14
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.8
8.7
Embodied Energy, MJ/kg 40
130
Embodied Water, L/kg 140
300

Common Calculations

PREN (Pitting Resistance) 18
40
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 37
26
Strength to Weight: Bending, points 29
22
Thermal Diffusivity, mm2/s 4.5
2.9
Thermal Shock Resistance, points 28
18

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.5
Boron (B), % 0
0 to 0.020
Carbon (C), % 0 to 0.050
0.050 to 0.15
Chromium (Cr), % 16 to 16.8
21 to 23
Cobalt (Co), % 0
16 to 21
Copper (Cu), % 3.3 to 4.0
0
Iron (Fe), % 71.6 to 75.9
20.4 to 38.2
Lanthanum (La), % 0
0.0050 to 0.1
Manganese (Mn), % 0.25 to 0.75
0.5 to 2.0
Molybdenum (Mo), % 0 to 0.75
2.5 to 4.0
Nickel (Ni), % 4.5 to 5.0
19 to 22.5
Niobium (Nb), % 0.15 to 0.3
0 to 0.3
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0.2 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.015
Tantalum (Ta), % 0
0.3 to 1.3
Tungsten (W), % 0
2.0 to 3.5
Zinc (Zn), % 0
0.0010 to 0.1