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ASTM A369 Grade FP91 vs. SAE-AISI 1080 Steel

Both ASTM A369 grade FP91 and SAE-AISI 1080 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 FP91 and the bottom bar is SAE-AISI 1080 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
220 to 260
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
11
Fatigue Strength, MPa 320
300 to 360
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
72
Shear Strength, MPa 410
460 to 520
Tensile Strength: Ultimate (UTS), MPa 670
770 to 870
Tensile Strength: Yield (Proof), MPa 460
480 to 590

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 10
11

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.4
Embodied Energy, MJ/kg 37
19
Embodied Water, L/kg 88
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
80 to 84
Resilience: Unit (Modulus of Resilience), kJ/m3 560
610 to 920
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
27 to 31
Strength to Weight: Bending, points 22
24 to 26
Thermal Diffusivity, mm2/s 6.9
14
Thermal Shock Resistance, points 18
25 to 29

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0.75 to 0.88
Chromium (Cr), % 8.0 to 9.5
0
Iron (Fe), % 87.3 to 90.3
98.1 to 98.7
Manganese (Mn), % 0.3 to 0.6
0.6 to 0.9
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.2 to 0.5
0
Sulfur (S), % 0 to 0.025
0 to 0.050
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0