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  • Users: katrinali
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  1. katrinali

    Is 316SS commercial requirement require UT test ?

    Hi Guys, Not sure if 316ss commercail requirement ask for the UT test ( mostly? ) .. i thought the answer is no, but would like to confirm Thanks ahead Kat
  2. katrinali

    4130 hardness --will test direction make a big difference?

    Hi Guys, I came a cross an issue with hardness value on the 4130( 75/80K) bars: we did some lab hardness test(from 3rd party, quite qualified) on 20mm thick slice,( milled surface) the test location is on the cut surface it self, 2 test around the edge, 2 test around mid radius , and 2 test...
  3. katrinali

    Where is the specification for 4140 L80-->NACE HARDNESS 18-22HRC

    Hi guys, I am new to this industry and i found many threads saying NACE hardness require 18-22 HRC range, but i went through it didnt find the min HRC mentioned anywhere, could anyone please help me out where is the min 18 HRC hardness in NACE ? thanks a lot. Regards Q

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