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ASTM A369 Grade FPB vs. EN 1.1141 Steel

Both ASTM A369 grade FPB and EN 1.1141 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is ASTM A369 grade FPB and the bottom bar is EN 1.1141 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
120
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
28
Fatigue Strength, MPa 180
170
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 290
280
Tensile Strength: Ultimate (UTS), MPa 470
420
Tensile Strength: Yield (Proof), MPa 270
220

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
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 46
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
99
Resilience: Unit (Modulus of Resilience), kJ/m3 190
130
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
15
Strength to Weight: Bending, points 17
16
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 15
13

Alloy Composition

Carbon (C), % 0 to 0.3
0.12 to 0.18
Iron (Fe), % 98.1 to 99.61
98.8 to 99.58
Manganese (Mn), % 0.29 to 1.1
0.3 to 0.6
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.1 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.035