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CC751S Brass vs. ASTM A387 Grade 21 Steel

CC751S brass belongs to the copper alloys classification, while ASTM A387 grade 21 steel belongs to the iron 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 CC751S brass and the bottom bar is ASTM A387 grade 21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 5.6
21
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
74
Tensile Strength: Ultimate (UTS), MPa 450
500 to 590
Tensile Strength: Yield (Proof), MPa 320
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 190
260
Maximum Temperature: Mechanical, °C 130
480
Melting Completion (Liquidus), °C 850
1470
Melting Onset (Solidus), °C 810
1430
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 110
41
Thermal Expansion, µm/m-K 20
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 28
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 24
4.1
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 2.8
1.8
Embodied Energy, MJ/kg 46
23
Embodied Water, L/kg 330
62

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
84 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 480
140 to 320
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 15
18 to 21
Strength to Weight: Bending, points 16
18 to 20
Thermal Diffusivity, mm2/s 35
11
Thermal Shock Resistance, points 15
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Antimony (Sb), % 0 to 0.5
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
2.8 to 3.3
Copper (Cu), % 62.7 to 66
0
Iron (Fe), % 0.25 to 0.5
94.4 to 96
Lead (Pb), % 0.8 to 2.2
0
Manganese (Mn), % 0 to 0.15
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.8
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.65 to 1.1
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 0 to 0.8
0
Zinc (Zn), % 27.9 to 35.6
0