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AISI 431 Stainless Steel vs. CC755S Brass

AISI 431 stainless steel belongs to the iron alloys classification, while CC755S brass belongs to the copper 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 AISI 431 stainless steel and the bottom bar is CC755S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
110
Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 15 to 17
9.5
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
390
Tensile Strength: Yield (Proof), MPa 710 to 1040
250

Thermal Properties

Latent Heat of Fusion, J/g 280
170
Maximum Temperature: Mechanical, °C 850
120
Melting Completion (Liquidus), °C 1510
820
Melting Onset (Solidus), °C 1450
780
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 26
120
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
27
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
30

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
23
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.2
2.7
Embodied Energy, MJ/kg 31
46
Embodied Water, L/kg 120
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
33
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
290
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 32 to 50
14
Strength to Weight: Bending, points 27 to 36
15
Thermal Diffusivity, mm2/s 7.0
38
Thermal Shock Resistance, points 28 to 43
13

Alloy Composition

Aluminum (Al), % 0
0.4 to 0.7
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
59.5 to 61
Iron (Fe), % 78.2 to 83.8
0.050 to 0.2
Lead (Pb), % 0
1.2 to 1.7
Manganese (Mn), % 0 to 1.0
0 to 0.050
Nickel (Ni), % 1.3 to 2.5
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.050
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0
35.8 to 38.9