Aluminium tensile strength

Metals, usually brass but also, for example, a more-expensive stainless steel if a higher tensile strength is needed. The insert metal must be compatible with the plastic material. For example, polyamide absorbs moisture, which leads to the steel rusting copper is a oxidation catalyst for polyolefins zinc, aluminium and brass are not compatible with polyacetals... 

From the table above, it appears that aluminium oxide is extremely hard. That is why the material has to be processed with diamond. The compression, bending and tensile strengths of metals are dependent on the heat treatment. The modulus of elasticity of aluminium oxide is almost double that of stainless steel this means that twice the strength is needed for the same elastic deformation. Single crystals of aluminium oxide have been successfully used as implant material. They are made by adding the oxide powder to the surface of a seed crystal which is slowly withdrawn from an electric arc flame or oxygen/... 

An acid-resisting alloy known as illium contains Ni 60-65, Cu 6-42, Cr 21-07, Mo 4-67, W 2-13, with traces of aluminium, silicon, iron, and manganese. It melts at 1300° C., and has a tensile strength of 50,000 lb. per square inch. It is remarkably resistant to corrosion, a 25 per cent, solution of nitric acid having no apparent influence upon it in twenty-four hours.2... 

The tensile strength of this self-hardened duralumin is twice as great as that in the soft state and five times as great as pure aluminium. 

Fig. 3. Tensile strength at break, a, after hot-drawing against take-up speed during gel-spinning of UHMWPE at different concentrations of aluminium stearate (wt.- %) in the spinning solution (Die e = 14.5 cm, a = 6" and D = 1.8 mm). With permission of the publishers Chapman Hall Ltd, (C)...

By use of this functionally gradient coating the carbon-fibre-reinforced aluminium composites (C/Al) exhibit excellent mechanical properties. The ultimate tensile strength reaches 1250 MPa when the fibre volume fraction is 35%. 

Aluminium forms alloys of valuable properties, that with copper being known as aluminium bronze with magnesium, as magnalium the former resists the action of many salts in solution, such as alkali chlorides, ammonia compounds, caustic, etc. the latter has great tensile strength and can be soldered. 

Annealed aluminium possesses a Brinell Hardness of 23 under 500 or 1000 kg, corresponding with a Tensile Strength of approximately 10 kg. per sq. mm. (6-35 tons per sq. in.). In the case of the thick series, the maximum hardness, as also the maximum Tensile Strength, occurs at 200 % cold work. 

Ducru observed the alterations of aluminium for the first time about 1894 in the case of wires of this metal, used as telegraph wires in the Congo or Dahomey from the coast to the interior. In a month, the wire, which had a Tensile Strength of 23 kg. per sq. mm. (14-6 tons per sq. in.), had become grey, and changed to an extremely weak substance. Chemical analysis showed no oxidation. Hence there was no change of a chemical nature. 

Longitudinal and transverse tensile tests are prescribed in the case of aluminium and aluminium alloys of great strength of thickness greater than 1 mm., and involve the determination of Elastic Limit, Tensile Strength, and % Elongation. 

Table 1. Mechanical properties of selected pressure-infiltrated ceramic particle reinforced aluminium composites Young s modulus (E), yield and ultimate tensile strengths (aQ2, Outs), tensile elongation ( 0, and fracture toughness parameters. Toughness Kic was measured from J-R curves on pure A1 matrix composites and by chevron-notch fracture testing on Al-Cu...

Lithium is used to a limited extent in industry in various alloys. It increases the tensile strength and resistance of magnesium alloys to corrosi on a calcium-lithium alloy is used in purifying copper for high conductivity work. Addition of about o-1 per cent of lithium to aluminium-zinc alloys enhances their tensile strength. 

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