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AISI 321 Stainless Steel vs. CC750S Brass

AISI 321 stainless steel belongs to the iron alloys classification, while CC750S 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 CC750S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
54
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34 to 50
13
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 590 to 690
200
Tensile Strength: Yield (Proof), MPa 220 to 350
80

Thermal Properties

Latent Heat of Fusion, J/g 290
170
Maximum Temperature: Mechanical, °C 870
130
Melting Completion (Liquidus), °C 1430
860
Melting Onset (Solidus), °C 1400
810
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 16
110
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
26

Otherwise Unclassified Properties

Base Metal Price, % relative 16
25
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 3.2
2.8
Embodied Energy, MJ/kg 45
46
Embodied Water, L/kg 140
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 230
22
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 310
30
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 21 to 25
6.8
Strength to Weight: Bending, points 20 to 22
9.3
Thermal Diffusivity, mm2/s 4.1
35
Thermal Shock Resistance, points 13 to 15
6.7

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
62 to 67
Iron (Fe), % 65.3 to 74
0 to 0.8
Lead (Pb), % 0
1.0 to 3.0
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 0.050
Silicon (Si), % 0 to 0.75
0 to 0.050
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 1.5
Titanium (Ti), % 0 to 0.7
0
Zinc (Zn), % 0
26.3 to 36