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ASTM A182 Grade F36 vs. ASTM A369 Grade FPB

Both ASTM A182 grade F36 and ASTM A369 grade FPB are iron alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is ASTM A182 grade F36 and the bottom bar is ASTM A369 grade FPB.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
19
Fatigue Strength, MPa 330
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 440
290
Tensile Strength: Ultimate (UTS), MPa 710
470
Tensile Strength: Yield (Proof), MPa 490
270

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
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 39
52
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.4
Embodied Energy, MJ/kg 22
18
Embodied Water, L/kg 53
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
78
Resilience: Unit (Modulus of Resilience), kJ/m3 650
190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 10
14
Thermal Shock Resistance, points 21
15

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0.1 to 0.17
0 to 0.3
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0.5 to 0.8
0
Iron (Fe), % 95 to 97.1
98.1 to 99.61
Manganese (Mn), % 0.8 to 1.2
0.29 to 1.1
Molybdenum (Mo), % 0.25 to 0.5
0
Nickel (Ni), % 1.0 to 1.3
0
Niobium (Nb), % 0.015 to 0.045
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.25 to 0.5
0.1 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.035
Vanadium (V), % 0 to 0.020
0