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AWS E409Nb vs. AISI 409Cb Stainless Steel

Both AWS E409Nb and AISI 409Cb stainless steel are iron alloys. They have a very high 97% 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 AWS E409Nb and the bottom bar is AISI 409Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
24
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 500
420
Tensile Strength: Yield (Proof), MPa 380
200

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
25
Thermal Expansion, µm/m-K 14
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.2
Embodied Energy, MJ/kg 42
31
Embodied Water, L/kg 100
94

Common Calculations

PREN (Pitting Resistance) 14
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
83
Resilience: Unit (Modulus of Resilience), kJ/m3 380
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
15
Strength to Weight: Bending, points 18
16
Thermal Diffusivity, mm2/s 6.8
6.7
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.060
Chromium (Cr), % 11 to 14
10.5 to 11.7
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 80.2 to 88.5
84.9 to 89.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 0 to 0.6
0 to 0.5
Niobium (Nb), % 0.5 to 1.5
0 to 0.75
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 0.040