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C69700 Brass vs. S81921 Stainless Steel

C69700 brass belongs to the copper alloys classification, while S81921 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 S81921 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 25
29
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
79
Shear Strength, MPa 300
460
Tensile Strength: Ultimate (UTS), MPa 470
710
Tensile Strength: Yield (Proof), MPa 230
500

Thermal Properties

Latent Heat of Fusion, J/g 240
290
Maximum Temperature: Mechanical, °C 160
990
Melting Completion (Liquidus), °C 930
1430
Melting Onset (Solidus), °C 880
1390
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 43
15
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Base Metal Price, % relative 26
14
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 44
41
Embodied Water, L/kg 310
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
180
Resilience: Unit (Modulus of Resilience), kJ/m3 250
630
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 16
25
Strength to Weight: Bending, points 16
23
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 16
20

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 75 to 80
0
Iron (Fe), % 0 to 0.2
66.7 to 75.9
Lead (Pb), % 0.5 to 1.5
0
Manganese (Mn), % 0 to 0.4
2.0 to 4.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 13.9 to 22
0
Residuals, % 0 to 0.5
0