Engineering Materials
Beryllium bronze contains

60% copper and 40% beryllium
97.75% copper and 2.25% beryllium
80% copper and 20% beryllium
99% copper and 1% beryllium

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Engineering Materials
The temperature required for full annealing in hypereutectoid steel is

30° C to 50° C below lower critical temperature
30° C to 50° C above upper critical temperature
30° C to 50° C above lower critical temperature
30° C to 50° C below upper critical temperature

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