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AWS E309Nb vs. EN 1.4318 Stainless Steel

Both AWS E309Nb and EN 1.4318 stainless steel are iron alloys. They have 86% 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 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
44
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 620
740

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
2.8
Embodied Energy, MJ/kg 64
39
Embodied Water, L/kg 180
130

Common Calculations

PREN (Pitting Resistance) 25
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
27
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 16
17

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.030
Chromium (Cr), % 22 to 25
16.5 to 18.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 54.8 to 64.8
70.2 to 77.4
Manganese (Mn), % 0.5 to 2.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 12 to 14
6.0 to 8.0
Niobium (Nb), % 0.7 to 1.0
0
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015