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AWS E409Nb vs. SAE-AISI A6 Steel

Both AWS E409Nb and SAE-AISI A6 steel are iron alloys. They have 87% of their average alloy composition in common. There are 24 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 SAE-AISI A6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 500
750 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
41
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.7
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.8
Embodied Energy, MJ/kg 42
24
Embodied Water, L/kg 100
57

Common Calculations

PREN (Pitting Resistance) 14
4.8
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
27 to 71
Strength to Weight: Bending, points 18
23 to 45
Thermal Diffusivity, mm2/s 6.8
11
Thermal Shock Resistance, points 14
25 to 65

Alloy Composition

Carbon (C), % 0 to 0.12
0.65 to 0.75
Chromium (Cr), % 11 to 14
0.9 to 1.2
Copper (Cu), % 0 to 0.75
0 to 0.25
Iron (Fe), % 80.2 to 88.5
93 to 95.8
Manganese (Mn), % 0 to 1.0
1.8 to 2.5
Molybdenum (Mo), % 0 to 0.75
0.9 to 1.4
Nickel (Ni), % 0 to 0.6
0 to 0.3
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030