Ductile-brittle transition temperature
Ductile-brittle transition temperature
(OP)
Who knows the ductile-brittle transition temperature for steel SA516-70?
Thanks
Thanks
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Ductile-brittle transition temperature
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RE: Ductile-brittle transition temperature
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Ductile-brittle transition temperature
30 for non normalized material ASME 516-70
-30 for normalized material. ASME 516-70N
As stated above these values will vary depending on several factors. The material still has to impact tested above 1" thick.
RE: Ductile-brittle transition temperature
Reply; Go to ASME B&PV Code, Section VIII, Div 1 and what you will find are impact exemption curves that have been developed over the years for a group of steels, which the above are included, to ensure a minimum impact energy value for a given service temperature and material thickness.
-20 deg F if not normalized, and less than 0.5" in thickness
-55 deg F if normalized and less than 0.5" in thickness
If the thickness or use of the steel is below a minimum service temperature based on the exemption curves above, impact testing will be required to that heat of material.
RE: Ductile-brittle transition temperature
RE: Ductile-brittle transition temperature
RE: Ductile-brittle transition temperature
Doing some research for a project and got googled right to this thread.
A question to stanweld. Following up on the pervious post, if impact tested to zone 3 of table 9 of ASTM A709, wouldn't it be good to -60F per Table 7?
rmw
RE: Ductile-brittle transition temperature
I'm not sure what question you are asking. SA-516 70 is not referenced under A-709. A709, S84 does not apply to ASME B & PV Codes. Impact test temperatures and absorbed energy are based on other (ASHTO) design criteria.