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ASTM A369 Grade FP9 vs. SAE-AISI P3 Steel

Both ASTM A369 grade FP9 and SAE-AISI P3 steel are iron alloys. They have 90% 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 SAE-AISI P3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 470
410 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
46
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
2.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.5
Embodied Energy, MJ/kg 28
20
Embodied Water, L/kg 87
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
15 to 70
Strength to Weight: Bending, points 17
16 to 44
Thermal Diffusivity, mm2/s 6.9
12
Thermal Shock Resistance, points 13
14 to 65

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.1
Chromium (Cr), % 8.0 to 10
0.4 to 0.75
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 87.1 to 90.3
96.3 to 98.4
Manganese (Mn), % 0.3 to 0.6
0.2 to 0.6
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
1.0 to 1.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.5 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030