Found in IEC60695-11-10. The suffix can be considered a 'clarification' of HB. Specifies the burning rate (mm per min) over a set length of material.
'Correlation' is based on specific material dimensions, so not necessarily equivalent. Requirements for HB40 and HB75 only if external. Brian -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Doug Kramer Sent: Thursday, December 09, 2010 10:30 AM To: [email protected] Subject: Plastic flamibility rating What is the difference between 94HB, HB40 and HB75? Yes I know the 94HB rating is based on a flame test over a glowing wire test. Is there any correlation between the 2 rating systems? Is HB40 considered equivalent to 94HB? Thanks, Doug Kramer - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
