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AWS E409Nb vs. AWS E410NiMo

Both AWS E409Nb and AWS E410NiMo are iron alloys. Both are furnished in the post-weld heat treated (PWHT) condition. They have a very high 96% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AWS E409Nb and the bottom bar is AWS E410NiMo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 500
850

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
24
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.4
Embodied Energy, MJ/kg 42
34
Embodied Water, L/kg 100
110

Common Calculations

PREN (Pitting Resistance) 14
14
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
30
Strength to Weight: Bending, points 18
26
Thermal Diffusivity, mm2/s 6.8
6.5
Thermal Shock Resistance, points 14
23

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.060
Chromium (Cr), % 11 to 14
11 to 12.5
Copper (Cu), % 0 to 0.75
0 to 0.75
Iron (Fe), % 80.2 to 88.5
79 to 84.6
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
0.4 to 0.7
Nickel (Ni), % 0 to 0.6
4.0 to 5.0
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.030