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C38000 Brass vs. ASTM A372 Grade J Steel

C38000 brass belongs to the copper alloys classification, while ASTM A372 grade J steel belongs to the iron alloys. There are 27 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 C38000 brass and the bottom bar is ASTM A372 grade J steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 17
17 to 22
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 39
73
Shear Strength, MPa 230
410 to 630
Tensile Strength: Ultimate (UTS), MPa 380
650 to 1020
Tensile Strength: Yield (Proof), MPa 120
430 to 850

Thermal Properties

Latent Heat of Fusion, J/g 170
250
Maximum Temperature: Mechanical, °C 110
420
Melting Completion (Liquidus), °C 800
1460
Melting Onset (Solidus), °C 760
1420
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 110
44
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
2.4
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.5
Embodied Energy, MJ/kg 46
20
Embodied Water, L/kg 330
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 50
130 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 74
500 to 1930
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 13
23 to 36
Strength to Weight: Bending, points 14
21 to 29
Thermal Diffusivity, mm2/s 37
12
Thermal Shock Resistance, points 13
19 to 30

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Carbon (C), % 0
0.35 to 0.5
Chromium (Cr), % 0
0.8 to 1.2
Copper (Cu), % 55 to 60
0
Iron (Fe), % 0 to 0.35
96.7 to 97.8
Lead (Pb), % 1.5 to 2.5
0
Manganese (Mn), % 0
0.75 to 1.1
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 35.9 to 43.5
0
Residuals, % 0 to 0.5
0