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ASTM A369 Grade FP9 vs. AWS E240

Both ASTM A369 grade FP9 and AWS E240 are iron alloys. They have 74% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP9 and the bottom bar is AWS E240.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 470
770

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1450
1390
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.0
3.0
Embodied Energy, MJ/kg 28
42
Embodied Water, L/kg 87
160

Common Calculations

PREN (Pitting Resistance) 12
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
28
Strength to Weight: Bending, points 17
24
Thermal Diffusivity, mm2/s 6.9
3.9
Thermal Shock Resistance, points 13
19

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.060
Chromium (Cr), % 8.0 to 10
17 to 19
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 87.1 to 90.3
58.6 to 68.4
Manganese (Mn), % 0.3 to 0.6
10.5 to 13.5
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.75
Nickel (Ni), % 0
4.0 to 6.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.5 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030