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AWS E309Nb vs. ASTM A27 Cast Steel

Both AWS E309Nb and ASTM A27 cast steel are iron alloys. 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 AWS E309Nb and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
25 to 27
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 620
460 to 550

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 25
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.4
Embodied Energy, MJ/kg 64
18
Embodied Water, L/kg 180
45 to 46

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
16 to 20
Strength to Weight: Bending, points 21
17 to 19
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 16
15 to 18