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AWS E309Nb vs. EN 1.6958 Steel

Both AWS E309Nb and EN 1.6958 steel are iron alloys. They have 66% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E309Nb and the bottom bar is EN 1.6958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
16
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 620
1140

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
47
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 25
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.4
2.0
Embodied Energy, MJ/kg 64
27
Embodied Water, L/kg 180
60

Common Calculations

PREN (Pitting Resistance) 25
2.9
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
40
Strength to Weight: Bending, points 21
31
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 16
39

Alloy Composition

Aluminum (Al), % 0
0.0050 to 0.050
Carbon (C), % 0 to 0.12
0.25 to 0.3
Chromium (Cr), % 22 to 25
1.2 to 1.7
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 54.8 to 64.8
92.6 to 94.5
Manganese (Mn), % 0.5 to 2.5
0.2 to 0.5
Molybdenum (Mo), % 0 to 0.75
0.35 to 0.55
Nickel (Ni), % 12 to 14
3.3 to 3.8
Niobium (Nb), % 0.7 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0.15 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0
0 to 0.12