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Islamic Golden Age brass astrolabe Brass lectern with an eagle. Attributed to Aert van Tricht, Limburg (Netherlands), c. 1500.. Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, [1] but copper typically has the larger proportion, generally 66% copper and 34% zinc.
Good for cold-working; radiators, hardware, electrical, drawn cartridge cases. Phosphor bronze (ASTM B103, B139, B159) Cu 89.75, Sn 10.0, P 0.25 Spring temper — 122 4 241 High fatigue-strength and spring qualities Yellow or High brass (ASTM B36, B134, B135) Cu 65.0, Zn 35.0 Annealed 18 48 60 55 Good corrosion resistance Cold-drawn 55 70 15 115
Gunmetal ingot is a related alloy in which the zinc is replaced by 2% lead; this makes the alloy easier to cast but it has less strength. [2]Modified gunmetal contains lead in addition to the zinc; it is typically composed of 86% copper, 9.5% tin, 2.5% lead, and 2% zinc.
Finally, durable goods are important because the indicator sheds light on so many different segments of the economy, including tech, transportation, manufacturing, machinery, residential and ...
A car is a durable good. The gasoline that powers it is a non-durable (or consumable) good.. In economics, a durable good or a hard good or consumer durable is a good that does not quickly wear out or, more specifically, one that yields utility over time rather than being completely consumed in one use.
The discovery of bronze (an alloy of copper with arsenic or tin) enabled people to create metal objects which were harder and more durable than previously possible. Bronze tools, weapons, armor, and building materials such as decorative tiles were harder and more durable than their stone and copper (" Chalcolithic ") predecessors.
Industrials editor Brendan Byrnes discusses the 1.6% rise in durable goods orders, a macroeconomic indicator of the industrials sector. This figure is slightly misleading because it would be ...
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