Duplex and astm g48a test metal and metallurgy engineering. Purchase your copy of astm g48 112015 as a pdf download or hard copy directly from the official bsi shop. This wellknown is issued below the constant designation g forty eight. Astm g48 112015 standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride solution. Aug 07, 2019 august 7, 2019 admin travel leave a comment on astm g48 pdf example of pitting after corrosion testing in accordance with astm g48 method a. In conclusion, the astm g48 standard is a valuable method to detect inadequate heat treatment and welding procedures that could lead to, for example, severe second phase precipitation e. Astm international helping our world work better standards catalog 2016. There are more resources out there, i did a simple download free bs standards search, to see the above.
All bsi british standards available online in electronic and print formats. Wear and erosion to find similar documents by classification. When using stainless and duplex 4g811, astm g48 is widely used to ensure the quality of the material and resistance to pitting and crevice corrosion. Standard test methods for pitting and crevice corrosion resistance of stainless. Apr, 2020 example of pitting after corrosion testing in accordance with astm g48 method a. Maximum allowable service temperatures and the astm g48 test. Astm g61 focuses on crevice free specimens, but the. Pdf marine and offshore structures constructed with stainless steel are. Astmg48 standard test methods for pitting and crevice. Corrosion testing to astm g48 using method a corrosion.
Astm e47 pdf e 03 standard test method for color and colordifference measurement by tristimulus filter colorimetry, bidirectional geometry, color, color. Astm g 48 03 pdf free download astm international standards. Pdf accelerated pitting corrosion test of 304 stainless. The material is normal duplex astm a790 uns 31803, smls pipe not the super duplex. Standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride solution, astm international, west conshohocken, pa, 2011. The test temperature of 22 c is too aggressive for lean duplex grades such. Jul 21, 2019 astm e47 pdf e 03 standard test method for color and colordifference measurement by tristimulus filter colorimetry, bidirectional geometry, color, color. Astm a923 testing detecting intermetallic phases in duplex. The astm ga test ferric chloride test is widely used for prequalification of corrosion. Standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride solution.
Pdf accelerated pitting corrosion test of 304 stainless steel using. To acquire the current version of the standards with print and download options, follow the hyperlink to the current version. Method a is the rapid screening method sodium hydroxide etch test for classification of etch structures of duplex stainless steels, and is preferable for quick analysis of susceptibility to intermetallics in the microstructure. Corrosion testing to astm g48 using method a corrosion engineering engtips. Dec 25, 2019 astm g4811 pdf posted on december 25, 2019 originally the astm website. Dec 30, 2018 corrosion results for astm g48 standard test method for pitting and crevice. Note 4purchasers are cautioned that different classes of nuts have different nut thickness see 7. Corrosion results for astm g48 standard test method for pitting and crevice. Please advise, is it acceptable if we may submit tq to client to lower the testing time to 24 ashm instead of 72 hours for normal duplex wrought specimen because g48 is flexible on timings and suggests 72 hours although variations may also be used. Nevertheless, astm g48 test with more severe conditions then enabled us to. Standard test methods for pitting and crevice corrosion. For annual book of astm standards volume information, refer to the. Testing by astm g48 for pitting and crevice corrosion.
The underside of the test piece was almost completely free. Astm g 48 03 pdf free download january 26, 2018 astm g comments. Astm g48 is the most commonly used standard to assess pitting and. Buy astm g r test methods for pitting and crevice corrosion resistance of stainless steels and. Standard guide for examination and evaluation of pitting.
Oct 10, 2019 astm international takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. May 02, 2020 astm g48 method a pdf if youre forced to pursue the wrost case scenario, then the other option is to use super duplex welding consumables for the weld coupon. Astm g48 112015 h4811 when testing aswelded, cylindrical, or other nonflat samples, the standard crevice formers will not provide uniform contact. Astm g48, standard test methods for pitting and crevice corrosion resistance of. Astm g48 112015 standard test methods for pitting and. The astm g48 method b is used to assess the pitting and crevice corrosion resistance of stainless steels. Jan 26, 2018 astm g 48 03 pdf free download january 26, 2018 astmg comments. May 12, 2020 corrosion testing to astm g48 using method a corrosion engineering engtips. I am not sure if the suggestions here were based on hypothetical or real sea. Standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride solution1. The last approved version of this historical standard. Aug 17, 2019 abstract astm g48 standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride.
When using stainless and duplex steels, astm g48 is widely used to ensure the quality of the material and resistance to pitting and crevice corrosion. Standard practice for laboratory immersion corrosion testing of metals. Dear experts, the subjected testing was performed on duplex steel for welding procedure qualification at testing temperature of 22c for. I must say, however, that i dont agree with metrode when they say that the test temperatures given in astm g48 standard are only recommendations. The astm g48a test ferric chloride test is widely used for prequalification of corrosion resistant alloys, welds and weld overlays for oil and gas industry. Methods c, d, e and f allow for a ranking of alloys by minimum critical temperature to cause initiation of pitting corrosion and crevice corrosion. Use of duplex stainless steels in the oil refining industry. Had you encountered a specific problem or were you just looking for general information.
For annual book of astm standards volume information, refer to the standards document summary page on the astm website. Standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride solution astm g28022008, astm a 262 02a 2008 b, c, e, f, astm a76393 2004, une en iso 36512. Astm g48 standard test methods for pitting and crevice. Standardt est methodsfor detectingdetrimental intermetallic. Duplex and astm g48 a test sjones petroleum 16 may 16 03. The test temperature of 22 c is too aggressive for lean duplex grades. When using stainless and duplex steels, astm g48 is widely astm g48 method a to ensure the quality of the material and resistance to pitting and crevice corrosion. Samples shall not be pickled or passivated prior to test. The product is wrought duplex but testing to g48 using method a is client specification requirement for welding procedure qualification at 22c for suggested 72 hours. Showing the bestfit line and astm e140 conversion for ferritic steel. Abstract astm g48 standard test methods for pitting and crevice corrosion resistance of stainless steels and related alloys by use of ferric chloride. The astm standard states that the solution is designed to provide breakdown of 304 at room temperature.
Nace corrosion 2014 challenges in pre qualification corrosion. The available pitting and crevice astm g48 method a methods include. Jun 14, 2019 astm g48 pdf example of pitting after corrosion testing in accordance with astm g48 method a. Astm g 48 is a relatively severe test, but lack of definition in the standard can lead to variation of data.