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C47940 Brass vs. S21800 Stainless Steel

C47940 brass belongs to the copper alloys classification, while S21800 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C47940 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, % 14 to 34
40
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 40
75
Shear Strength, MPa 250 to 310
510
Tensile Strength: Ultimate (UTS), MPa 380 to 520
740
Tensile Strength: Yield (Proof), MPa 160 to 390
390

Thermal Properties

Latent Heat of Fusion, J/g 170
340
Maximum Temperature: Mechanical, °C 130
900
Melting Completion (Liquidus), °C 850
1360
Melting Onset (Solidus), °C 800
1310
Specific Heat Capacity, J/kg-K 380
500
Thermal Expansion, µm/m-K 20
16

Otherwise Unclassified Properties

Base Metal Price, % relative 25
15
Density, g/cm3 8.2
7.5
Embodied Carbon, kg CO2/kg material 2.8
3.1
Embodied Energy, MJ/kg 47
45
Embodied Water, L/kg 330
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 100
250
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 740
390
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 19
26
Strength to Weight: Axial, points 13 to 17
27
Strength to Weight: Bending, points 14 to 17
24
Thermal Shock Resistance, points 13 to 17
17

Alloy Composition

Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 63 to 66
0
Iron (Fe), % 0.1 to 1.0
59.1 to 65.4
Lead (Pb), % 1.0 to 2.0
0
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 0.1 to 0.5
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.2 to 2.0
0
Zinc (Zn), % 28.1 to 34.6
0
Residuals, % 0 to 0.4
0