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C99750 Brass vs. S21904 Stainless Steel

C99750 brass belongs to the copper alloys classification, while S21904 stainless steel belongs to the iron alloys. There are 27 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 C99750 brass and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 120
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 130
200
Elongation at Break, % 20 to 30
17 to 51
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 48
78
Tensile Strength: Ultimate (UTS), MPa 450 to 520
700 to 1000
Tensile Strength: Yield (Proof), MPa 220 to 280
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 200
290
Maximum Temperature: Mechanical, °C 160
980
Melting Completion (Liquidus), °C 840
1400
Melting Onset (Solidus), °C 820
1350
Specific Heat Capacity, J/kg-K 410
480
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 23
15
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 3.1
3.0
Embodied Energy, MJ/kg 51
43
Embodied Water, L/kg 310
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 300
380 to 2070
Stiffness to Weight: Axial, points 8.6
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 15 to 18
25 to 36
Strength to Weight: Bending, points 16 to 18
23 to 29
Thermal Shock Resistance, points 13 to 15
15 to 21

Alloy Composition

Aluminum (Al), % 0.25 to 3.0
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 55 to 61
0
Iron (Fe), % 0 to 1.0
59.5 to 67.4
Lead (Pb), % 0.5 to 2.5
0
Manganese (Mn), % 17 to 23
8.0 to 10
Nickel (Ni), % 0 to 5.0
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 17 to 23
0
Residuals, % 0 to 0.3
0