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AWS E409Nb vs. EN 1.6771 Steel

Both AWS E409Nb and EN 1.6771 steel are iron alloys. They have 87% of their average alloy composition in common. There are 28 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 E409Nb and the bottom bar is EN 1.6771 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
8.0 to 8.7
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 500
930 to 1180
Tensile Strength: Yield (Proof), MPa 380
740 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
46
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 13
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.9
1.9
Embodied Energy, MJ/kg 42
25
Embodied Water, L/kg 100
58

Common Calculations

PREN (Pitting Resistance) 14
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
75 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 380
1460 to 3450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
33 to 41
Strength to Weight: Bending, points 18
27 to 31
Thermal Diffusivity, mm2/s 6.8
13
Thermal Shock Resistance, points 14
27 to 35

Alloy Composition

Carbon (C), % 0 to 0.12
0.27 to 0.33
Chromium (Cr), % 11 to 14
0.8 to 1.2
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 80.2 to 88.5
92.2 to 95
Manganese (Mn), % 0 to 1.0
0.6 to 1.0
Molybdenum (Mo), % 0 to 0.75
0.3 to 0.6
Nickel (Ni), % 0 to 0.6
3.0 to 4.0
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.020