Define what is the metallurgical explanation of effects of chromium, nickel, molybdenum, and carbon in stainless steels?

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What are allotropes? What are the allotropes of iron and carbon?

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What special precautions need to be employed if a powder metallurgy route is chosen?

1 Answers  

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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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What is iron ferite?

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Which of different types of cast irons is stronger? Is their strength superior to steels?

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Define what is special about the properties of chromium molybdenum steels that make them ideal for pressure vessels?

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What is a silver and deming drill bit?

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The hardness of steel depends on

0 Answers   NIC,

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what happens when a EM wave is transmitted

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What does allotropic mean what does iron and steel have to do with it?

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what is a type of graphite in cast iron?

3 Answers   Balaji, Sail,

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