Upto what negative temperature below zero degree we can use IS 2062 Structural material?

2 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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Water hammer in pipes occur due to ?

0 Answers   NIC,

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Define what is a silver and deming drill bit?

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What is chemical composition and mechanical properties of IS 2004,Gr-3 and IS 305 AB-2?

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How much gold is in a troy ounce?

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The processes used to fabricate the superalloys seem fairly mature. Is much process development going on?

2 Answers  

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Isn't power metallurgy an expensive processing route to employ?

2 Answers   JSW, TATA,

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What are ceramics?

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What is the hottest part of flame in fire?

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What is stress corrosion cracking..

6 Answers  

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What is carbide?

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