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ASTM A387 Grade 2 Steel vs. C87700 Bronze

ASTM A387 grade 2 steel belongs to the iron alloys classification, while C87700 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 2 steel and the bottom bar is C87700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 25
3.6
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
42
Tensile Strength: Ultimate (UTS), MPa 470 to 550
300
Tensile Strength: Yield (Proof), MPa 260 to 350
120

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1470
980
Melting Onset (Solidus), °C 1420
900
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 45
120
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
45
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
48

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
29
Density, g/cm3 7.9
8.5
Embodied Carbon, kg CO2/kg material 1.6
2.7
Embodied Energy, MJ/kg 20
45
Embodied Water, L/kg 50
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
64
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 16 to 20
9.8
Strength to Weight: Bending, points 17 to 19
12
Thermal Diffusivity, mm2/s 12
34
Thermal Shock Resistance, points 14 to 16
11

Alloy Composition

Antimony (Sb), % 0
0 to 0.1
Carbon (C), % 0.050 to 0.21
0
Chromium (Cr), % 0.5 to 0.8
0
Copper (Cu), % 0
87.5 to 90.5
Iron (Fe), % 97.1 to 98.3
0 to 0.5
Lead (Pb), % 0
0 to 0.090
Manganese (Mn), % 0.55 to 0.8
0 to 0.8
Molybdenum (Mo), % 0.45 to 0.6
0
Nickel (Ni), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.15
Silicon (Si), % 0.15 to 0.4
2.5 to 3.5
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
0 to 2.0
Zinc (Zn), % 0
7.0 to 9.0
Residuals, % 0
0 to 0.8