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AISI 431 Stainless Steel vs. C69400 Brass

AISI 431 stainless steel belongs to the iron alloys classification, while C69400 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 C69400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 15 to 17
17
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
42
Shear Strength, MPa 550 to 840
350
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
570
Tensile Strength: Yield (Proof), MPa 710 to 1040
270

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 850
170
Melting Completion (Liquidus), °C 1510
920
Melting Onset (Solidus), °C 1450
820
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 26
26
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
27
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.2
2.7
Embodied Energy, MJ/kg 31
44
Embodied Water, L/kg 120
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
80
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
340
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 32 to 50
19
Strength to Weight: Bending, points 27 to 36
18
Thermal Diffusivity, mm2/s 7.0
7.7
Thermal Shock Resistance, points 28 to 43
20

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
80 to 83
Iron (Fe), % 78.2 to 83.8
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 1.3 to 2.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
11.5 to 16.5
Residuals, % 0
0 to 0.5