Search results for query: *

For severe sour service, I would highlight more on the top of what has been correctly mentioned in this thread the calcium treatment (CAB, CaSi wire) to control the inclusion shape during steelmaking process as it improves a lot the HIC resistance. As a matter of fact, through this method the...

I would also check the chemistry (LECO instrument for instance fits the purpose) on the broken specimen with low impact values. Carbon content could be sensibly higher than heat analysis (C=0.18) due to segregation and this has an extremely negative effect on low temperature impact energies. On...

Parts made from 304 and supplied in the cold work condition could behave against salt air attack worser then those supplied in the solution annealed condition. Try then to figure out the supply condition and see if this match stands. Ciao

As already correctly stated in this thread the sound velocity is dependent upon Young's modulus. Therefore being duplex a dual phase steel with two different elastic modulus also the sound beam will experience two different velocity while travelling. From studies made to determine ferrite...

Thankyou guys for the clarifying replies. To go deeper, this is the average steel analisys: C=0,30% Cr=1% Mo=1% V=0.30% On the heats the Nb content which is not specified by applicable spec. scatters from low values of 0.002 up to values of 0.02. While I feel that the low values could well be...

Hi all, I'm dealing with a standard CrMoV steel where the Nb maximum acceptable ladle value is not specified. I think in this case I should consider it as residual element, tough I don't have any clue of where is the limit between residual and intentionally added. There might be an international...