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ASTM A369 Grade FP21 vs. C38500 Bronze

ASTM A369 grade FP21 belongs to the iron alloys classification, while C38500 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP21 and the bottom bar is C38500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 20
17
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 74
37
Shear Strength, MPa 300
230
Tensile Strength: Ultimate (UTS), MPa 470
370
Tensile Strength: Yield (Proof), MPa 240
130

Thermal Properties

Latent Heat of Fusion, J/g 260
160
Maximum Temperature: Mechanical, °C 470
110
Melting Completion (Liquidus), °C 1470
890
Melting Onset (Solidus), °C 1430
880
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 41
120
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
28
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
31

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
22
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.8
2.6
Embodied Energy, MJ/kg 23
45
Embodied Water, L/kg 61
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
48
Resilience: Unit (Modulus of Resilience), kJ/m3 150
78
Stiffness to Weight: Axial, points 13
7.0
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 17
13
Strength to Weight: Bending, points 17
14
Thermal Diffusivity, mm2/s 11
40
Thermal Shock Resistance, points 14
12

Alloy Composition

Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 2.7 to 3.4
0
Copper (Cu), % 0
55 to 59
Iron (Fe), % 94.3 to 96.2
0 to 0.35
Lead (Pb), % 0
2.5 to 3.5
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.8 to 1.1
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.025
0
Zinc (Zn), % 0
36.7 to 42.5
Residuals, % 0
0 to 0.5