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EN 1.4903 Stainless Steel vs. AWS E409Nb

Both EN 1.4903 stainless steel and AWS E409Nb are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4903 stainless 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, % 20 to 21
23
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 670 to 680
500
Tensile Strength: Yield (Proof), MPa 500
380

Thermal Properties

Latent Heat of Fusion, J/g 270
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 26
25
Thermal Expansion, µm/m-K 11
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
2.9
Embodied Energy, MJ/kg 36
42
Embodied Water, L/kg 88
100

Common Calculations

PREN (Pitting Resistance) 13
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 650
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 7.0
6.8
Thermal Shock Resistance, points 23
14

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.12
0 to 0.12
Chromium (Cr), % 8.0 to 9.5
11 to 14
Copper (Cu), % 0 to 0.3
0 to 0.75
Iron (Fe), % 87.1 to 90.5
80.2 to 88.5
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.85 to 1.1
0 to 0.75
Nickel (Ni), % 0 to 0.4
0 to 0.6
Niobium (Nb), % 0.060 to 0.1
0.5 to 1.5
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.18 to 0.25
0