16" super duplex UNS S32750
16" super duplex UNS S32750
(OP)
Hi,
developing a new pipe spec in UNS S32750 for use in seawater service. Up to around 8/10" you can get seamless pipe to A 790, after this it seems welded pipe to ASTM A928 is used (better control of the ferrite/austenite levels in the weld i've been told). The welded pipe use plate of ASTM 240 UNS S32750. I can't find basic stress allowances for ASTM A240 UNS S32750 in ASME which i need to calculate my wall thicknesses. Can anyone help ??
developing a new pipe spec in UNS S32750 for use in seawater service. Up to around 8/10" you can get seamless pipe to A 790, after this it seems welded pipe to ASTM A928 is used (better control of the ferrite/austenite levels in the weld i've been told). The welded pipe use plate of ASTM 240 UNS S32750. I can't find basic stress allowances for ASTM A240 UNS S32750 in ASME which i need to calculate my wall thicknesses. Can anyone help ??





RE: 16" super duplex UNS S32750
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: 16" super duplex UNS S32750
i'm looking at page 176 of ASME B31.3 2004 and as far as i can see materials on this page are nickel & nickel alloy ie: ASTM B materials. Page 164 lists stainless steels plates/sheets but only A240 S32760 is listed ?
martin.
RE: 16" super duplex UNS S32750
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: 16" super duplex UNS S32750
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: 16" super duplex UNS S32750
Maybe you have misunderstood. I have the properties for ASTM A790 S32750. What i need are the properties for A240 S32750 as this plate is used to make welded pipe to ASTM A928.
martin
RE: 16" super duplex UNS S32750
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: 16" super duplex UNS S32750
The company has an extra requirement when purchasing welded pipe in UNS S32750 that states, and i quote ' Determined in accordance with ASTM E562, ferrite content: base material 35-55%, welds 25-60%'
RE: 16" super duplex UNS S32750
http://www.standard.no/imaker.exe?id=3789
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: 16" super duplex UNS S32750
RE: 16" super duplex UNS S32750
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: 16" super duplex UNS S32750
RE: 16" super duplex UNS S32750
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/