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EN 1.6771 Steel vs. AWS E409Nb

Both EN 1.6771 steel and AWS E409Nb 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 EN 1.6771 steel and the bottom bar is AWS E409Nb.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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