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ASTM A369 Grade FPA vs. AWS E219

Both ASTM A369 grade FPA and AWS E219 are iron alloys. They have 64% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FPA and the bottom bar is AWS E219.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
17
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 380
690

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
14
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.1
Embodied Energy, MJ/kg 18
44
Embodied Water, L/kg 46
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13
25
Strength to Weight: Bending, points 15
23
Thermal Diffusivity, mm2/s 14
3.8
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.060
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 98.3 to 99.63
58.6 to 67.4
Manganese (Mn), % 0.27 to 0.93
8.0 to 10
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0
5.5 to 7.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.1 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.030