Does case harden steel properties detoriates over time? Especially for guns, parts like bolt carrier, the brand new parts has been kept for 10 year and properly oiled. I am worried about its surface hardness to take the blow during firing.

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Is it possible to determine the heat treatment condition in stainless steel (astm a 479 gr xm-19) by checking the microstructure?

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Throw some light on hardening abilities of metals?

0 Answers  

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what is the meaning(definition)of EN grade of steel and also tell whats the full name of EN?

15 Answers   Hitachi, Mecon,

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What happens to the microstructure during service exposure?

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What are the allotropes of iron and carbon?

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carbon-3.23%,manganese-0.60%,silicon-2.25%,sulphur-0.086%, phosphorus-0.122%,chromium-0.04%,nickel-0.10%,molybdenum- trace.

3 Answers  

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what is the difference between stainless steel and alloy steel?

0 Answers  

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What is the use of damper?

0 Answers   NIC,

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Which liquid can dissolve gold?

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The size of shaper is specified by ?

0 Answers   NIC,

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Why duplex or super duplex stainless steels are welded with low heat input type electrode?

0 Answers  

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