Chemical requirement of hardfacing weld(ER CoCr-A) on 1.6mm

[SURESH]

Dear Experts

Please through your view on below subject

1.What will be the qualification range, when a PQR is made by hardfacing weld(ER CoCr-A) on 1.6mm base to weld

2. What is the standard reference?

3. What is the Fe range allowed?

4. If range specified in WPS with limits with nominal chemical is that ok?

Regards

Suresh

[Chintan]

Follow asme sec ix QW 453
For chemical req you have to check drg & client spec
If not specified by client follow pqr result take client approval on same

[George Dilintas]

When ASME BPVC Is applicable then:

1. The minimum thickness of hardfacing has to be specified in the WPS

The minimum thickness depends on which surface the chemical analysis or hardness test is conducted. You should read the Notes on Fig. QW-462(s)

2. There is no limit to the max thickness that can be used in production

3. The Chemical analysis has to be defined in the WPS. ASME does not impose any ranges/ In ASME it is not mandatory to specify a chemical analysis in the WPS, but if specified it has to be checked. However, the Classification of the filler metal is an essential variable, contrary to the ordinary welding (read QW-404.12)

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis