Return-Path: Received: from king1.vineyard.net ([204.17.195.90]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Wed, 24 Jan 2001 21:51:50 -0500 Received: (from mail@localhost) by king1.vineyard.net (8.9.3/8.9.0) id WAA83037 for ; Wed, 24 Jan 2001 22:00:18 -0500 (EST) Received: from esy1.vineyard.net(199.232.95.132) by K1.VINEYARD.NET via smap/slg (V2.0) id sma082980; Wed Jan 24 22:00:09 2001 Message-Id: <200101250300.WAA83037@king1.vineyard.net> From: "Ted Stanley" To: "LML reply address" Subject: Corrosion due to dissimilar materials Date: Wed, 24 Jan 2001 21:57:08 -0500 X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Regarding corrosion and the results of using various materials next to one another I thought I’d pass on the listing below which should be of interest to builders. Avoid having materials next to each other that are widely separated on the listing below. Note too that the material at the corroded end of the chart will do just that, corrode, when placed next to a material at the other end of the chart. Naturally anything that acts as an electrolyte only aggravates the process. When I was in A&P school I had to build an aluminum wing rib as a project. As an experiment I asked a commercial fisherman friend of mine to toss it in the bow of his boat for a week. The result was almost no corrosion. I took it back and riveted a copper penny to it and sent it back to the bow of the boat. A week later the rib was badly corroded, particularly between the penny and the aluminum. Hope everyone finds this useful. Ted Stanley - A&P-IA GALVANIC SERIES OF METALS AND ALLOYS CORRODED END ( ANODIC OR LEAST NOBLE) MAGNESIUM MAGNESIUM ALLOYS ZINC ALUMINUM 5052, 3004, 3003, 1100, 6053 CADMIUM ALUMINUM 2117, 2017, 2024 MILD STEEL (1018), WROUGHT IRON CAST IRON, LOW ALLOY HIGH STRENGTH STEEL CHROME IRON (ACTIVE) STAINLESS STEEL, 430 SERIES (ACTIVE) 302, 303, 321, 347, 410,416, STAINLESS STEEL (ACTIVE) NI - RESIST 316, 317, STAINLESS STEEL (ACTIVE) CARPENTER 20CB-3 STAINLESS (ACTIVE) ALUMINUM BRONZE (CA 687) HASTELLOY C (ACTIVE) INCONEL 625 (ACTIVE) TITANIUM (ACTIVE) LEAD - TIN SOLDERS LEAD TIN INCONEL 600 (ACTIVE) NICKEL (ACTIVE) 60 NI-15 CR (ACTIVE) 80 NI-20 CR (ACTIVE) HASTELLOY B (ACTIVE) BRASSES COPPER (CA102) MANGANESE BRONZE (CA 675), TIN BRONZE (CA903, 905) SILICONE BRONZE NICKEL SILVER COPPER - NICKEL ALLOY 90-10 COPPER - NICKEL ALLOY 80-20 430 STAINLESS STEEL NICKEL, ALUMINUM, BRONZE (CA 630, 632) MONEL 400, K500 SILVER SOLDER NICKEL (PASSIVE) 60 NI- 15 CR (PASSIVE) INCONEL 600 (PASSIVE) 80 NI- 20 CR (PASSIVE) CHROME IRON (PASSIVE) 302, 303, 304, 321, 347, STAINLESS STEEL (PASSIVE) 316, 317, STAINLESS STEEL (PASSIVE) CARPENTER 20 CB-3 STAINLESS (PASSIVE), INCOLOY 825NICKEL - MOLYBDEUM - CHROMIUM - IRON ALLOY (PASSIVE) SILVER TITANIUM (PASS.) HASTELLOY C & C276 (PASSIVE), INCONEL 625(PASS.) GRAPHITE ZIRCONIUM GOLD PLATINUM PROTECTED END (CATHODIC OR MOST NOBLE) The Mc Nally Institute 1986 S. Belcher Rd. Clearwater, Florida 33764 Phone 727 535 6450 Fax 727 535 8150 E mail mcnally@earthlink.net http://www.mcnallyinstitute.com/Charts/galvanic-series.html >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>