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SAE-AISI 5160 Steel vs. ASTM A369 Grade FPA

Both SAE-AISI 5160 steel and ASTM A369 grade FPA are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 5160 steel and the bottom bar is ASTM A369 grade FPA.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 340
110
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 18
27
Fatigue Strength, MPa 180 to 650
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 390 to 700
240
Tensile Strength: Ultimate (UTS), MPa 660 to 1150
380
Tensile Strength: Yield (Proof), MPa 280 to 1010
240

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 43
52
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
18
Embodied Water, L/kg 50
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73 to 160
89
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 2700
150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 41
13
Strength to Weight: Bending, points 22 to 31
15
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 19 to 34
12

Alloy Composition

Carbon (C), % 0.56 to 0.61
0 to 0.25
Chromium (Cr), % 0.7 to 0.9
0
Iron (Fe), % 97.1 to 97.8
98.3 to 99.63
Manganese (Mn), % 0.75 to 1.0
0.27 to 0.93
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.15 to 0.35
0.1 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.035