(See appendix 1 - Factors to be considered when making a material selection).Īt the same time, Parker recognizes the challenge for all users, owners and operators alike, to recognize value and achieve more with less. Where 6MO tubing has been selected as the most appropriate corrosion solution, Parker strongly recommends that all fittings and valves should also be made from 6MO material. One such solution, still by far the most satisfactory in all respects, with the lowest lifetime cost, highest performance and lowest risk, is the specification of 6MO tubing and tube fittings as a minimum.Īs the pre-eminent supplier of this solution across our industry, Parker will fully warrant, without exception, the installation of A-LOK® and CPI™ tube fittings with their 6MO tubing in applications where this has been determined to be the most suitable material, providing the installation has been made by competent personnel fully in conformance to Parker instructions and guidelines. Statement The use of 316 A-LOK® and CPI™ Tube fittings on 6MO TubeAs the renowned expert in the field, Parker has often been called upon to comment about or provide satisfactory solutions to this problem. If after reviewing all of the above, the end user elects to use a combination of 6MO tube with 316 Stainless steel tube fittings, then Parker can confirm that both A-LOK® and CPI™ fittings will provide excellent mechanical performance on 6MO tube in accordance with appendix 2. ![]() Balancing cost and safety decisions is one that requires careful consideration. ![]() The safety of personnel and the integrity of plant and equipment is the most important decision when making a selection on the most appropriate material. The major methods for this verification are found in appendix 5. Once this material selection has been made (change from 316 to 6MO) it is also important to ensure that ALL materials being used in the application meet the corrosion resistance expectations. The most common reasons for this change are due to existing facilities observing the types of corrosion explained in appendix 4. Many end users are moving from 316 stainless steel to 6MO material for their small-bore tubing applications to combat corrosion issues experienced in their current applications. How can you calculate this cost? See appendix 6 for further elements to help you decide. On each project the cost implications are a significant factor that should be considered. To help users make an informed decision we have highlighted a number of these in appendix 1 and also provide guidelines to consider in appendix 3. There are numerous factors involved in selecting the appropriate material for a specific application. This white paper has been written to help users make well-judged decisions on the right material selection for their particular application. There are many engineers now asking the question “If I replace my 316 tube material with 6MO, as this is where I am seeing the corrosion issues, then what material should I use for tube fittings and valves?" Most of the investigations so far focus on pitting and crevice corrosion on 316 tubing close to tube clamps or surface contamination on the outside of the tubing such a weld splatter.Īs a result of these investigations many end users are now selecting 6MO tubing to replace 316 for their offshore corrosive environments to extend the service life of equipment and to increase the safety. As a result, there has been a corresponding increase in the reported incidence of external corrosion to 316 stainless steel instrumentation tubing systems. It is typically used in oil and petroleum equipment, aerospace, food processing, pulp and paper processing equipment, textiles, architectural, and marine equipment.Introduction Solutions for the Safe Connection of Instrumentation Tubing in Corrosive EnvironmentsIncreasingly, process control instrumentation solutions are being applied in ever more hostile environments. Additionally, the mechanical properties of 316 remain constant even down to cryogenic temperatures. It exhibits higher strength than 304 and most importantly, excellent corrosion resistance in marine environments. Applications | Specifications | Mechanical and Chemical Data | Tolerancesģ16/316L stainless steel is one of the more popular stainless alloys.
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