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R30556 Alloy vs. AWS E309

Both R30556 alloy and AWS E309 are iron alloys. They have 67% 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 R30556 alloy and the bottom bar is AWS E309.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
34
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
78
Tensile Strength: Ultimate (UTS), MPa 780
620

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 15
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 70
20
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.7
3.7
Embodied Energy, MJ/kg 130
52
Embodied Water, L/kg 300
180

Common Calculations

PREN (Pitting Resistance) 40
25
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 2.9
4.0
Thermal Shock Resistance, points 18
16

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 21 to 23
22 to 25
Cobalt (Co), % 16 to 21
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 20.4 to 38.2
55.8 to 65.5
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 2.5 to 4.0
0 to 0.75
Nickel (Ni), % 19 to 22.5
12 to 14
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.2 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0