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SAE-AISI P5 Steel vs. ASTM A369 Grade FP9

Both SAE-AISI P5 steel and ASTM A369 grade FP9 are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P5 steel and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 370 to 1980
470

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
26
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
10

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
2.0
Embodied Energy, MJ/kg 20
28
Embodied Water, L/kg 56
87

Common Calculations

PREN (Pitting Resistance) 2.3
12
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13 to 70
17
Strength to Weight: Bending, points 15 to 45
17
Thermal Diffusivity, mm2/s 12
6.9
Thermal Shock Resistance, points 12 to 65
13

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 2.0 to 2.5
8.0 to 10
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 95.7 to 97.8
87.1 to 90.3
Manganese (Mn), % 0.2 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.35
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.4
0.5 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030