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EN 1.3549 Stainless Steel vs. AWS E409Nb

Both EN 1.3549 stainless steel and AWS E409Nb are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3549 stainless steel and the bottom bar is AWS E409Nb.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 730
500

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 21
25
Thermal Expansion, µm/m-K 10
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
2.9
Embodied Energy, MJ/kg 37
42
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 22
14
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
18
Strength to Weight: Bending, points 24
18
Thermal Diffusivity, mm2/s 5.6
6.8
Thermal Shock Resistance, points 26
14

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.12
Chromium (Cr), % 17 to 19
11 to 14
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 77.5 to 82
80.2 to 88.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.3
0 to 0.75
Nickel (Ni), % 0
0 to 0.6
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.070 to 0.12
0