Brass vs Aluminium Alloy. Brass is is the generic term because that a variety of copper-zinc alloys. Aluminium alloys are based on aluminium, in which the key alloying facets are Cu, Mn, Si, Mg, Mg+Si, Zn.

You are watching: Which is harder brass or aluminum


For example, UNS C26000 cartridge brass alloy (70/30) is from the yellow brass series, which has the greatest ductility. Cartridge brasses are mostly cold formed and also they can also be easily machined, i beg your pardon is crucial in do cartridge cases. It deserve to be offered for radiator cores and also tanks, flashlight shells, lamp fixtures, fasteners, locks, hinges, ammunition materials or pipes accessories.

Aluminium Alloys

High purity aluminium is a soft product with the ultimate toughness of around 10 MPa, which limits its use in commercial applications. Aluminium of advertising purity (99-99.6%) becomes harder and also stronger because of the presence of impurities, specifically of Si and Fe. However when alloyed, aluminium alloys are warmth treatable, which significantly transforms theri mechanically properties.

Aluminium alloys are based on aluminium, in i beg your pardon the key alloying facets are Cu, Mn, Si, Mg, Mg+Si, Zn. Aluminium alloy compositions are registered through The Aluminum Association. The aluminium alloys are separated into 9 family members (Al1xxx come Al9xxx). The various families of alloys and the significant alloying facets are:

1xxx: no alloying elements2xxx: Copper3xxx: Manganese4xxx: Silicon5xxx: Magnesium6xxx: Magnesium and also silicon7xxx: Zinc, magnesium, and also copper8xxx: other facets which room not extended by various other series

There are additionally two principal classifications, namely casting alloys and wrought alloys, both of i beg your pardon are more subdivided right into the category heat-treatable and non-heat-treatable. Aluminium alloys comprise alloying aspects with minimal solid solubility at room temperature and with a strong temperature dependence of heavy solubility (for instance Cu) deserve to be strengthened by a suitable thermal treatment (precipitation hardening). The stamin of warmth treated advertising Al alloys exceeds 550 MPa.

Mechanical properties of aluminium alloys extremely depend on your phase composition and also microstructure. High strength have the right to be accomplished among others by introduction of a high volume portion of fine, homogeneously distributed second phase particles and by a refinement the the grain size. In general, aluminium alloys are characterized by a fairly low thickness (2.7 g/cm3 as contrasted to 7.9 g/cm3 for steel), high electrical and thermal conductivities, and also a resistance to corrosion in some common environments, consisting of the ambient atmosphere. The chef limitation of aluminum is the low melt temperature (660°C), which restricts the preferably temperature in ~ which it can be used. For general production the 5000 and also 6000 series alloys carry out adequate strength linked with an excellent corrosion resistance, high toughness and ease of welding.

Aluminium and its alloys are offered widely in aerospace, automotive, architectural, lithographic, packaging, electrical and also electronic applications. That is the prime product of building for the aircraft industry throughout many of that history. About 70% the commercial civil aircraft airframes are made native aluminium alloys, and without aluminium civil aviation would not be financially viable. Automotive market now includes aluminium as engine castings, wheels, radiators and also increasingly as body parts. 6111 aluminium and also 2008 aluminium alloy are extensively used for exterior automotive body panels. Cylinder blocks and crankcases room often cast made the aluminium alloys.

Properties the Brass vs Aluminium Alloy

Material properties space intensive properties, that way they room independent of the amount that mass and also may differ from place to ar within the system at any kind of moment. The communication of products science involves studying the structure of materials, and relating them to their properties (mechanical, electrical etc.). As soon as a materials scientist knows around this structure-property correlation, they deserve to then walk on to study the family member performance that a material in a provided application. The major determinants that the structure of a material and thus of its properties room its constituent chemistry elements and also the way in i beg your pardon it has been processed right into its last form.

Density of Brass vs Aluminium Alloy

Density that typical brass – UNS C26000 is 8.53 g/cm3.

Density of typical aluminium alloy is 2.7 g/cm3 (6061 alloy).

Density is characterized as the mass every unit volume. The is an intensive property, which is mathematically characterized as mass divided by volume:

ρ = m/V

In words, the density (ρ) that a problem is the full mass (m) of the substance split by the full volume (V) inhabited by the substance. The traditional SI unit is kilograms per cubic meter (kg/m3). The standard English unit is pounds mass per cubic foot (lbm/ft3).

Since the thickness (ρ) that a problem is the full mass (m) of the substance separated by the full volume (V) inhabited by the substance, that is obvious, the thickness of a problem strongly counts on its atomic mass and likewise on the atom number density (N; atoms/cm3),

Atomic Weight. The atomic mass is carried by the atomic nucleus, which rectal only about 10-12 of the full volume of the atom or less, yet it consists of all the confident charge and at least 99.95% the the complete mass of the atom. As such it is determined by the fixed number (number the protons and neutrons).Crystal Structure. Density of crystalline substance is significantly affected by its crystal structure. FCC structure, along with its hexagonal family member (hcp), has the most reliable packing variable (74%). Metals containing FCC structures include austenite, aluminum, copper, lead, silver, gold, nickel, platinum, and also thorium.

Mechanical nature of Brass vs Aluminium Alloy

Materials are frequently chosen for various applications due to the fact that they have desirable combinations of mechanically characteristics. Because that structural applications, product properties are crucial and engineers must take them right into account.

Strength of light Brass vs Aluminium Alloy

In mechanics the materials, the strength that a material is its ability to withstand an applied load without fail or plastic deformation. Strength of materials usually considers the relationship in between the external loads applied to a material and also the resulting deformation or readjust in product dimensions. Strength the a material is its capacity to resist this applied load without fail or plastic deformation.

Ultimate Tensile Strength

Ultimate tensile strength of 6061 aluminium alloy depends greatly on the temper that the material, but for T6 temper that is about 290 MPa.

Ultimate tensile stamin of cartridge brass – UNS C26000 is around 315 MPa.

The ultimate tensile strength is the maximum on the engineering stress-strain curve. This synchronizes to the maximum stress that deserve to be continual by a structure in tension. Can be fried tensile toughness is frequently shortened come “tensile strength” or also to “the ultimate.” If this anxiety is applied and also maintained, fracture will certainly result. Often, this worth is significantly more than the yield stress and anxiety (as much as 50 to 60 percent an ext than the yield because that some species of metals). Once a ductile material reaches its ultimate strength, it experience necking where the cross-sectional area reduces locally. The stress-strain curve consists of no greater stress 보다 the can be fried strength. Even though deformations can continue to increase, the stress and anxiety usually decreases after ~ the can be fried strength has actually been achieved. The is an intensive property; thus its value does not depend on the dimension of the test specimen. However, that is dependency on other factors, such as the ready of the specimen, the existence or otherwise of surface ar defects, and the temperature the the check environment and material. Ultimate tensile strengths vary from 50 MPa because that an aluminum to together high as 3000 MPa for really high-strength steels.

Yield Strength

Yield stamin of 6061 aluminium alloy depends substantially on the temper that the material, however for T6 temper that is about 240 MPa.

Yield toughness of cartridge brass – UNS C26000 is about 95 MPa.

The yield point is the suggest on a stress-strain curve that suggests the border of elastic behavior and also the start plastic behavior. Yield strength or yield stress is the product property characterized as the anxiety at which a material begins to deform plastically conversely, yield point is the allude where nonlinear (elastic + plastic) deformation begins. Before the yield point, the material will deform elastically and will return to its original shape when the applied stress is removed. As soon as the yield suggest is passed, some portion of the deformation will be permanent and non-reversible. Some steels and also other products exhibit a plot termed a yield point phenomenon. Yield staminas vary native 35 MPa because that a low-strength aluminum to higher than 1400 MPa for very high-strength steels.

Young’s Modulus the Elasticity

Young’s modulus the elasticity the 6061 aluminium alloy is about 69 GPa.

Young’s modulus that elasticity of cartridge brass – UNS C26000 is around 110 GPa.

The Young’s modulus that elasticity is the elastic modulus for tensile and also compressive stress in the straight elasticity routine of a uniaxial deformation and is normally assessed by tensile tests. Up to a limiting stress, a human body will be able to recover its dimensions on remove of the load. The applied stresses reason the atoms in a crystal to relocate from your equilibrium position. All the atoms are displaced the same amount and still maintain their family member geometry. Once the stresses are removed, all the atoms return to their original positions and no long-term deformation occurs. Follow to the Hooke’s law, the tension is proportional come the strain (in the elastic region), and the steep is Young’s modulus. Young’s modulus is equal to the longitudinal stress split by the strain.


Hardness that Brass vs Aluminium Alloy

Brinell hardness of 6061 aluminium alloy depends substantially on the temper the the material, however for T6 temper that is about 95 MPa.

Brinell hardness of cartridge brass – UNS C26000 is approximately 100 MPa.


Rockwell hardness test is among the most usual indentation hardness tests, that has been occurred for hardness testing. In contrast to Brinell test, the Rockwell tester steps the depth the penetration of an indenter under a big load (major load) contrasted to the penetration do by a preload (minor load). The young load creates the zero position. The significant load is applied, then eliminated while still maintaining the boy load. The difference between depth the penetration before and also after application of the significant load is used to calculate the Rockwell hardness number. That is, the penetration depth and also hardness space inversely proportional. The chief benefit of Rockwell hardness is its capacity to display hardness values directly. The an outcome is a dimensionless number listed as HRA, HRB, HRC, etc., whereby the critical letter is the respective Rockwell scale.

The Rockwell C check is performed through a Brale penetrator (120°diamond cone) and a significant load that 150kg.

Thermal properties of Brass vs Aluminium Alloy

Thermal properties of materials refer to the an answer of materials to transforms in their temperature and to the applications of heat. As a hard absorbs energy in the type of heat, its temperature rises and also its size increase. Yet different materials react to the applications of warmth differently.

Heat capacity, heat expansion, and also thermal conductivity are properties that space often vital in the useful use that solids.

Melting point of Brass vs Aluminium Alloy

Melting point of 6061 aluminium alloy is about 600°C.

Melting allude of cartridge brass – UNS C26000 is about 950°C.

In general, melting is a phase change of a substance from the solid to the fluid phase. The melting point of a substance is the temperature at which this phase change occurs. The melting point also defines a problem in i m sorry the solid and liquid deserve to exist in equilibrium.

Thermal Conductivity the Brass vs Aluminium Alloy

The thermal conductivity the 6061 aluminium alloy is 150 W/(m.K).

The thermal conductivity of cartridge brass – UNS C26000 is 120 W/(m.K).

The heat transfer attributes of a solid product are measured by a property called the thermal conductivity, k (or λ), measured in W/m.K. That is a measure of a substance’s capability to transfer warm through a product by conduction. Note that Fourier’s law applies for all matter, regardless of that state (solid, liquid, or gas), therefore, the is additionally defined for liquids and also gases.

See more: How Much Can A Pig Weigh T On Market In 2020, Introducing Big Norm: 1,600

The thermal conductivity of many liquids and solids varies v temperature. For vapors, it also depends upon pressure. In general:


Most products are very nearly homogeneous, because of this we have the right to usually write k = k (T). Similar definitions are connected with thermal conductivities in the y- and also z-directions (ky, kz), but for one isotropic material the heat conductivity is independent of the direction the transfer, kx = ky = kz = k.