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C69400 Brass vs. EN 1.3940 Stainless Steel

C69400 brass belongs to the copper alloys classification, while EN 1.3940 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C69400 brass and the bottom bar is EN 1.3940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
34
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 42
77
Tensile Strength: Ultimate (UTS), MPa 570
540
Tensile Strength: Yield (Proof), MPa 270
240

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 170
930
Melting Completion (Liquidus), °C 920
1420
Melting Onset (Solidus), °C 820
1380
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 27
17
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 2.7
3.3
Embodied Energy, MJ/kg 44
47
Embodied Water, L/kg 300
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
150
Resilience: Unit (Modulus of Resilience), kJ/m3 340
150
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 19
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 7.7
4.1
Thermal Shock Resistance, points 20
16

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 80 to 83
0
Iron (Fe), % 0 to 0.2
64.2 to 71.4
Lead (Pb), % 0 to 0.3
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
12 to 14
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 11.5 to 16.5
0
Residuals, % 0 to 0.5
0