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C69700 Brass vs. S43940 Stainless Steel

C69700 brass belongs to the copper alloys classification, while S43940 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 C69700 brass and the bottom bar is S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 25
21
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
77
Shear Strength, MPa 300
310
Tensile Strength: Ultimate (UTS), MPa 470
490
Tensile Strength: Yield (Proof), MPa 230
280

Thermal Properties

Latent Heat of Fusion, J/g 240
280
Maximum Temperature: Mechanical, °C 160
890
Melting Completion (Liquidus), °C 930
1440
Melting Onset (Solidus), °C 880
1400
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 43
25
Thermal Expansion, µm/m-K 19
10

Otherwise Unclassified Properties

Base Metal Price, % relative 26
12
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 44
38
Embodied Water, L/kg 310
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
86
Resilience: Unit (Modulus of Resilience), kJ/m3 250
200
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 16
18
Strength to Weight: Bending, points 16
18
Thermal Diffusivity, mm2/s 13
6.8
Thermal Shock Resistance, points 16
18

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 18.5
Copper (Cu), % 75 to 80
0
Iron (Fe), % 0 to 0.2
78.2 to 82.1
Lead (Pb), % 0.5 to 1.5
0
Manganese (Mn), % 0 to 0.4
0 to 1.0
Niobium (Nb), % 0
0.3 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.1 to 0.6
Zinc (Zn), % 13.9 to 22
0
Residuals, % 0 to 0.5
0