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ASTM A369 Grade FPA vs. ASTM A299 Steel

Both ASTM A369 grade FPA and ASTM A299 steel are iron alloys.

For each property being compared, the top bar is ASTM A369 grade FPA and the bottom bar is ASTM A299 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
21 to 22
Fatigue Strength, MPa 180
230 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 240
370 to 390
Tensile Strength: Ultimate (UTS), MPa 380
590 to 620
Tensile Strength: Yield (Proof), MPa 240
330 to 360

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
19
Embodied Water, L/kg 46
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
290 to 350
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13
21 to 22
Strength to Weight: Bending, points 15
20 to 21
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 12
17 to 18