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AWS E409Nb vs. ASTM A356 Grade 9

Both AWS E409Nb and ASTM A356 grade 9 are iron alloys. They have 87% 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 ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
17
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 500
670
Tensile Strength: Yield (Proof), MPa 380
460

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
41
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.4
Embodied Energy, MJ/kg 42
33
Embodied Water, L/kg 100
56

Common Calculations

PREN (Pitting Resistance) 14
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 380
570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 6.8
11
Thermal Shock Resistance, points 14
19

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.2
Chromium (Cr), % 11 to 14
1.0 to 1.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 80.2 to 88.5
95.2 to 97.2
Manganese (Mn), % 0 to 1.0
0.5 to 0.9
Molybdenum (Mo), % 0 to 0.75
0.9 to 1.2
Nickel (Ni), % 0 to 0.6
0
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.2 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.2 to 0.35