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ASTM A369 Grade FP9 vs. SAE-AISI T6 Steel

Both ASTM A369 grade FP9 and SAE-AISI T6 steel are iron alloys. They have 66% 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 FP9 and the bottom bar is SAE-AISI T6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
81
Tensile Strength: Ultimate (UTS), MPa 470
880 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1450
1830
Melting Onset (Solidus), °C 1410
1770
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 26
18
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
70
Density, g/cm3 7.8
9.5
Embodied Carbon, kg CO2/kg material 2.0
11
Embodied Energy, MJ/kg 28
170
Embodied Water, L/kg 87
160

Common Calculations

PREN (Pitting Resistance) 12
39
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 17
26 to 63
Strength to Weight: Bending, points 17
21 to 39
Thermal Diffusivity, mm2/s 6.9
4.7
Thermal Shock Resistance, points 13
26 to 64

Alloy Composition

Carbon (C), % 0 to 0.15
0.75 to 0.85
Chromium (Cr), % 8.0 to 10
4.0 to 4.8
Cobalt (Co), % 0
11 to 13
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 87.1 to 90.3
55.9 to 63.5
Manganese (Mn), % 0.3 to 0.6
0.2 to 0.4
Molybdenum (Mo), % 0.9 to 1.1
0.4 to 1.0
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.5 to 1.0
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
18.5 to 21
Vanadium (V), % 0
1.5 to 2.1