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ASTM A369 Grade FP9 vs. AWS E316H

Both ASTM A369 grade FP9 and AWS E316H are iron alloys. They have 75% of their average alloy composition in common. There are 25 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 ASTM A369 grade FP9 and the bottom bar is AWS E316H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 470
580

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.0
4.0
Embodied Energy, MJ/kg 28
55
Embodied Water, L/kg 87
160

Common Calculations

PREN (Pitting Resistance) 12
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 6.9
4.0
Thermal Shock Resistance, points 13
15

Alloy Composition

Carbon (C), % 0 to 0.15
0.040 to 0.080
Chromium (Cr), % 8.0 to 10
17 to 20
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 87.1 to 90.3
58.6 to 69.5
Manganese (Mn), % 0.3 to 0.6
0.5 to 2.5
Molybdenum (Mo), % 0.9 to 1.1
2.0 to 3.0
Nickel (Ni), % 0
11 to 14
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