Dear sir,
Dear Experts,
Someone else can tell me that what is the high hardness acceptable value for the ss 347 H in as welded condition. Actually we did one pqr with this material using ER 16.8.2/E 16.8.2 metrode welding consumable , pipe dia is 20"X 23.8mm in 6G position. All tests are pass like impact, bend, tensile, macro , micro structure. Max. Hardness Is 320 Hv10.
Can anyone can define the max value. Service is not sour.however operating temp is high from 500 to 700 deg celcius.Regards,
NAJM UL ISLAM
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WELDING ENGINEER
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