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C34500 Brass vs. S20431 Stainless Steel

C34500 brass belongs to the copper alloys classification, while S20431 stainless steel belongs to the iron alloys. There are 29 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 C34500 brass and the bottom bar is S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 12 to 28
46
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 40
76
Shear Strength, MPa 220 to 260
500
Tensile Strength: Ultimate (UTS), MPa 340 to 430
710
Tensile Strength: Yield (Proof), MPa 120 to 180
350

Thermal Properties

Latent Heat of Fusion, J/g 170
280
Maximum Temperature: Mechanical, °C 120
890
Melting Completion (Liquidus), °C 910
1400
Melting Onset (Solidus), °C 890
1360
Specific Heat Capacity, J/kg-K 380
480
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 29
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 24
12
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.5
Embodied Energy, MJ/kg 45
36
Embodied Water, L/kg 320
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 75
270
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 160
310
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 12 to 15
25
Strength to Weight: Bending, points 13 to 16
23
Thermal Diffusivity, mm2/s 37
4.0
Thermal Shock Resistance, points 11 to 14
15

Alloy Composition

Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0
17 to 18
Copper (Cu), % 62 to 65
1.5 to 3.5
Iron (Fe), % 0 to 0.15
66.1 to 74.4
Lead (Pb), % 1.5 to 2.5
0
Manganese (Mn), % 0
5.0 to 7.0
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 32 to 36.5
0
Residuals, % 0 to 0.4
0