The CTE of FR4 is 17-18 ppm/C -----Original Message----- From: COLLINS, GRAHAM <[log in to unmask]> To: [log in to unmask] <[log in to unmask]> ========================================================================= Date: Thursday, September 18, 1997 7:14 AM Subject: [TECHNET] Coefficient of thermal expansion >Good day TechNet. >A quick one: can somebody tell me the coefficient of thermal expansion >of FR4 board material? > >Thanks! > >Graham Collins >Litton Systems Limited, Atlantic Division >(902) 873-2000 ext 215 > >