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ASTM A369 Grade FP9 vs. SAE-AISI 1137 Steel

Both ASTM A369 grade FP9 and SAE-AISI 1137 steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 1137 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
11 to 17
Fatigue Strength, MPa 160
250 to 400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 300
430 to 460
Tensile Strength: Ultimate (UTS), MPa 470
700 to 760
Tensile Strength: Yield (Proof), MPa 240
370 to 650

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
400
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
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
10
Electrical Conductivity: Equal Weight (Specific), % IACS 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 87
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
81 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 140
360 to 1130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
25 to 27
Strength to Weight: Bending, points 17
22 to 24
Thermal Diffusivity, mm2/s 6.9
14
Thermal Shock Resistance, points 13
21 to 23

Alloy Composition

Carbon (C), % 0 to 0.15
0.32 to 0.39
Chromium (Cr), % 8.0 to 10
0
Iron (Fe), % 87.1 to 90.3
97.8 to 98.3
Manganese (Mn), % 0.3 to 0.6
1.4 to 1.7
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.5 to 1.0
0
Sulfur (S), % 0 to 0.030
0.080 to 0.13