Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Fri, 27 Feb 2004 20:43:31 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m23.mx.aol.com ([64.12.137.4] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3048729 for lml@lancaironline.net; Fri, 27 Feb 2004 20:24:01 -0500 Received: from Newlan2dl@aol.com by imo-m23.mx.aol.com (mail_out_v36_r4.14.) id q.1ef.1a26428a (18251) for ; Fri, 27 Feb 2004 20:23:54 -0500 (EST) From: Newlan2dl@aol.com X-Original-Message-ID: <1ef.1a26428a.2d7147aa@aol.com> X-Original-Date: Fri, 27 Feb 2004 20:23:54 EST Subject: Re: [LML] Re: [LML]Carbon X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1077931434" X-Mailer: 9.0 for Windows sub 5003 -------------------------------1077931434 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I don't have mil specs but it is the "standard" carbon i.e. 33 million modulus, 550 ksi tensile material like T-700 carbon. It appears to be plain weave. There are many manufacturers of that fiber and weave. Hexcell and Clark Sweibel are two weavers that come to mind right away. There are many carbon fibers and weaves that are superior to that in terms of strength and modulus. In addition there are many surface finishes although most are designed to be compatable with epoxy. And there are also large differences in fiber tows which affect the strength quite a bit. For example, you might buy a 10 oz fabric using a 12 k tow but you could also get one with a 3 k tow with a lot finer weave and greater strength. The 3 k is 1/4 the volume of 12 k and will be stronger assuming the same fiber is used, and lay flatter. And it will cost more of course. In addition to ordinary weaves there are 3D weaves, knits, stitched, braided and unidirectional fabrics. Is there something in particular you are looking for? I have some sources if you want to contact me directly. Try my work email at dan.newland@orcon.com or call (510) 476-2150. Dan Newland -------------------------------1077931434 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

I don't have mil specs but it is the "standard" carbon i.e. 33 million=20= modulus, 550 ksi tensile material like T-700 carbon. It appears to be=20= plain weave. There are many manufacturers of that fiber and weave.&nbs= p; Hexcell and Clark Sweibel are two weavers that come to mind right away.&n= bsp; There are many carbon fibers and weaves that are superior to that in te= rms of strength and modulus. In addition there are many surface finish= es although most are designed to be compatable with epoxy. And there a= re also large differences in fiber tows which affect the strength quite a bi= t. For example, you might buy a 10 oz fabric using a 12 k tow but you=20= could also get one with a 3 k tow with a lot finer weave and greater strengt= h. The 3 k is 1/4 the volume of 12 k and will be stronger assuming the= same fiber is used, and lay flatter. And it will cost more of course.= In addition to ordinary weaves there are 3D weaves, knits, stitched,=20= braided and unidirectional fabrics.

Is there something in particular you are looking for? I have some= sources if you want to contact me directly. Try my work email at dan.newland@orcon.com or call (510)= 476-2150.

Dan Newland

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