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Hardness requirement according to ASME IX for Carbon Steel

It is carried out in accordance with the ASME IX requirements using actual production material or a steel of the same grade but with the maximum carbon equivalent of material to be used. The welding variables are recorded during welding of the test piece and hardness testing is mandatory,the hardness of the test weld HAZ to be l...

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Hardness requirement according to ASME IX for Carbon

Feb 28, 2013But note, ASME B 31.3 does not set any limit for hardness for carbon steel. If the design specification is one of the these, MR-0175/ISO-15156 or MR -0103/RP-0472, along with ASME BPV and piping codes, hardness restrictions for Carbon steel are as follows:- Is there a hardness requirement in ASME B 31.3?Is there a hardness requirement in ASME B 31.3?Some more insights on this querry.Hardness requirement on PQR is a specific design/service environment induced issue.Generally in ASME BPV codes there's no requiremnet for hardness on PQR,except for B 31.3 code, Table 331.1.1. But note, ASME B 31.3 does not set any limit for hardness for carbon steel.Hardness requirement according to ASME IX for Carbon Steel Hardness requirement according to ASME IX for Carbon Steel What are the hardness requirements for carbon steel?What are the hardness requirements for carbon steel?-MR-0175/ISO-15156-Table A.1-22 HRC, for weld & HAZ. -MR-0103-2007-Hardness restrictions as per NACE RP0472.The hardness of the completed weld deposit shall not exceed 200 HBW.The maximum allowable HAZ hardness shall be 248 HV 10. Accordingly the PQR should be qualified. Thanks. Ontario,Canada. Ontario, Canada.Hardness requirement according to ASME IX for Carbon Steel Hardness requirement according to ASME IX for Carbon Steel

Why is heat input an essential variable in ASME IX?Why is heat input an essential variable in ASME IX?This requirement makes heat input a supplementary essential variable in ASME IX but an essential variable in ISO 15614 Pt1. Hardness testing is required by ISO 15614 Pt1 for all ferritic steels with a specified minimum yield strength greater than 275MPa. A maximum hardness for joints in either the as-welded of PWHTd condition is specified.A compari of ISO 15614 Part 1 and ASME IX - TWIIt is carried out in accordance with the ASME IX requirements using actual production material or a steel of the same grade but with the maximum carbon equivalent of material to be used. The welding variables are recorded during welding of the test piece and hardness testing is mandatory,the hardness of the test weld HAZ to be less than 248Hv10,that of the weld metal less than an average of 200HBW.Complying with NACE Hardness Requirements - TWI

Was this helpful?People also askWhat's the hardness requirement according to ASME IX?What's the hardness requirement according to ASME IX?Promoting, selling, recruiting, coursework and thesis posting is forbidden. Hardness requirement according to ASME IX for Carbon Steel? Hardness requirement according to ASME IX for Carbon Steel?Hardness requirement according to ASME IX for Carbon Steel Hardness requirement according to ASME IX for Carbon Steel

Your design Code, like ASME B31.3 or ASME Sect VIII Div 1 will you tell you those requirements. ASME IX is a service Code, whereas B31.3 or VIII Hardness requirement according to ASME IX for Carbon Steel For WPSs intended for oil & gas, petroleum, refinery or chemical plant I do hardness testing routinely. Small cost to do it now, big hassle later Hardness requirement according to ASME IX for Carbon Steel .Odd01 Only QW-290 for temper bead welding defines hardness testing. Hardness testing of carbon steels are not defined in most construction Codes; Hardness requirement according to ASME IX for Carbon Steel I agree with Stanweld but would add that some codes address hardness testing after PWHT. B31.3 comes to mind.weldtek, Alloy steels, yes but not for Carbon Steel.Stanweld, Yes, thanks for the correction.Thanks to all for your feedback. BR,Odd01Hi Odd1, Some more insights on this querry.Hardness requirement on PQR is a specific design/service environment induced issue.Generally in ASME B Hardness requirement according to ASME IX for Carbon Steel Since NACE specifies hardness requirements, you could have a look at this link weldinguide/gdanastasiadis/viewtopi Hardness requirement according to ASME IX for Carbon Steel forhardness testing code for ucibrinell hardness for inconelasme hardness tablebrinell hardness for molybdenumbrinell hardness for magnesiumbrinell hardness for leadNACE MR0175 - ASME (mechanical) Code IssuesJun 18, 2013Acceptance criteria of Hardness and charpy testThe authors expect that PWHT can also be exempted for a certain thickness range of chromium controlled carbon steels, according to the exemption condition for normal carbon steels by ASME B&PV Code Sec.III. Furthermore, the chromium controlled carbon steels are generally cheaper than low alloy steels for base materials such as pipe and plate.

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