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ASTM A369 Grade FPB vs. ASTM A225 Steel

Both ASTM A369 grade FPB and ASTM A225 steel are iron alloys.

For each property being compared, the top bar is ASTM A369 grade FPB and the bottom bar is ASTM A225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
21 to 23
Fatigue Strength, MPa 180
330 to 390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 290
390 to 520
Tensile Strength: Ultimate (UTS), MPa 470
620 to 830
Tensile Strength: Yield (Proof), MPa 270
460 to 550

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
52
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.8
Embodied Energy, MJ/kg 18
24 to 25
Embodied Water, L/kg 46
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
120 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 190
580 to 820
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
22 to 29
Strength to Weight: Bending, points 17
21 to 25
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 15
18 to 24