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C68400 Brass vs. AISI 418 Stainless Steel

C68400 brass belongs to the copper alloys classification, while AISI 418 stainless steel belongs to the iron alloys. There are 30 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 C68400 brass and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
330
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 18
17
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 41
77
Shear Strength, MPa 330
680
Tensile Strength: Ultimate (UTS), MPa 540
1100
Tensile Strength: Yield (Proof), MPa 310
850

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 130
770
Melting Completion (Liquidus), °C 840
1500
Melting Onset (Solidus), °C 820
1460
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 66
25
Thermal Expansion, µm/m-K 20
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 99
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 23
15
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 47
41
Embodied Water, L/kg 320
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
170
Resilience: Unit (Modulus of Resilience), kJ/m3 460
1830
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 19
38
Strength to Weight: Bending, points 19
29
Thermal Diffusivity, mm2/s 21
6.7
Thermal Shock Resistance, points 18
40

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Carbon (C), % 0
0.15 to 0.2
Chromium (Cr), % 0
12 to 14
Copper (Cu), % 59 to 64
0
Iron (Fe), % 0 to 1.0
78.5 to 83.6
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0.2 to 1.5
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.5
1.8 to 2.2
Phosphorus (P), % 0.030 to 0.3
0 to 0.040
Silicon (Si), % 1.5 to 2.5
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.5
0
Tungsten (W), % 0
2.5 to 3.5
Zinc (Zn), % 28.6 to 39.3
0
Residuals, % 0 to 0.5
0