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AISI 321 Stainless Steel vs. CC761S Brass

AISI 321 stainless steel belongs to the iron alloys classification, while CC761S brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 321 stainless steel and the bottom bar is CC761S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34 to 50
8.7
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
42
Tensile Strength: Ultimate (UTS), MPa 590 to 690
540
Tensile Strength: Yield (Proof), MPa 220 to 350
340

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 870
170
Melting Completion (Liquidus), °C 1430
960
Melting Onset (Solidus), °C 1400
910
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 16
27
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
43

Otherwise Unclassified Properties

Base Metal Price, % relative 16
27
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 3.2
2.7
Embodied Energy, MJ/kg 45
45
Embodied Water, L/kg 140
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 230
41
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 310
530
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 21 to 25
18
Strength to Weight: Bending, points 20 to 22
18
Thermal Diffusivity, mm2/s 4.1
8.0
Thermal Shock Resistance, points 13 to 15
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Antimony (Sb), % 0
0 to 0.050
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
78 to 83
Iron (Fe), % 65.3 to 74
0 to 0.6
Lead (Pb), % 0
0 to 0.8
Manganese (Mn), % 0 to 2.0
0 to 0.2
Nickel (Ni), % 9.0 to 12
0 to 1.0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.75
3.0 to 5.0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.3
Titanium (Ti), % 0 to 0.7
0
Zinc (Zn), % 0
8.9 to 19