When austenitized, carbon steel is quenched, why is the bcc crystal elongated into a body-centered tetragonal crystal structure?

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Why is chromium molybdenum steels used to build pressure vessels?

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The requirement for ASTM A217 Gr. WC9 castings for valves components like Body and Bonnet were Normalising at 920+/- 20 Deg. C and Tempring 780+/- 20 Deg. C The specification calls furnace shall be calibtated within +/-14 deg. C The Heat Chart shows minimum temperature for normalising 900 to 920 Deg. C, but maximum temperature 960-990 Deg. C Tempering 780+/-20 Deg. C is within limits and accepted. Casting having integral test bars, heat trated along with castings passed in chemical znalysis and mechanical properties. Since normalising maximum temperature is not meeting specification, where castings can be salvaged or renormalised and retempered to meet specification. Whether it will have affect on remechanical properties testing

0 Answers   Leader Valves,

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Define what is the different between ferrite percentage and ferrite number?

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What is the difference between DI pipes, Cast Iron pipes, LA Pipes, SW pipes, SWR Pipes, RCC hume pipe, RCC spun pipe ? What are their IS codes and applications ?

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How much gold is in a troy ounce?

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Witch type curome oxide in ms matle?

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What is the function of washer?

0 Answers   NIC,

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When using mercury to recover very, fine gold from ore, define what is the best way to separate the gold laden mercury from the ore?

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What is the chemical composition of FCVS350 ?

0 Answers   JSW,

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What is the use of worm gears?

0 Answers   NIC,

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What is the difference between diagrams of it and ct in heat treatment of steels?

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