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C68300 Brass vs. S21800 Stainless Steel

C68300 brass belongs to the copper alloys classification, while S21800 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C68300 brass and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 15
40
Poisson's Ratio 0.31
0.28
Rockwell B Hardness 60
88
Shear Modulus, GPa 40
75
Shear Strength, MPa 260
510
Tensile Strength: Ultimate (UTS), MPa 430
740
Tensile Strength: Yield (Proof), MPa 260
390

Thermal Properties

Latent Heat of Fusion, J/g 180
340
Maximum Temperature: Mechanical, °C 120
900
Melting Completion (Liquidus), °C 900
1360
Melting Onset (Solidus), °C 890
1310
Specific Heat Capacity, J/kg-K 390
500
Thermal Expansion, µm/m-K 20
16

Otherwise Unclassified Properties

Base Metal Price, % relative 23
15
Density, g/cm3 8.0
7.5
Embodied Carbon, kg CO2/kg material 2.8
3.1
Embodied Energy, MJ/kg 46
45
Embodied Water, L/kg 340
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
250
Resilience: Unit (Modulus of Resilience), kJ/m3 330
390
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 20
26
Strength to Weight: Axial, points 15
27
Strength to Weight: Bending, points 16
24
Thermal Shock Resistance, points 14
17

Alloy Composition

Antimony (Sb), % 0.3 to 1.0
0
Cadmium (Cd), % 0 to 0.010
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 59 to 63
0
Iron (Fe), % 0
59.1 to 65.4
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0.3 to 1.0
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0.050 to 0.2
0
Zinc (Zn), % 34.2 to 40.4
0
Residuals, % 0 to 0.5
0