Hardness
Hardness
(OP)
Why most of codes only gives max hardness limit & not minimum??
Could someone explain briefly about minimum what level hardness can accept on A106 GR B as well as other common materials in pipe lines?
Also why most of client is asking hardness value on HAZ,if distance between two welds are less than 1 Inch.??





RE: Hardness
RE: Hardness
Dear Duwe6 or anyone,
Can you explain it briefly,Including all my query?
RE: Hardness
RE: Hardness
Dear C2it,
Thanks for valuable information.And pls give information about minimum Hardness value ,which can accept.
RE: Hardness
RE: Hardness
The minimum expected a-106 B base metal hardness is approximately 120 BHN.
RE: Hardness
Pipe -8'' sch160
Preheat -150 C.
PWHT- ASME SEC VIII-DIV 1.
RE: Hardness
The acceptability of the material is based on the A-106 B tensile tests recorded on the MTR.
RE: Hardness
RE: Hardness
Thanks for your valuable information...