Materials of Construction and Chemical Compatibility for Sensing and Control Products
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1 ADVANCED MATERIALS HANDLING TECHNICAL NOTE Materials of Construction and Compatibility for Sensing and Control Products INTRODUCTION Entegris Sensing and Control products are designed for use in highly corrosive processes and high-purity applications primarily in the semiconductor industry. This guide will help you choose the right materials for your application. CHEMICAL COMPATIBILITY The following pages provide a chemical compatibility chart for the wetted and nonwetted materials in Entegris InVue and NT products: pressure transducers, flowmeters, proportional control valves and integrated flow controllers. This information is presented to provide basic chemical compatibility information for some of the most common chemicals used in the semiconductor industry. The chart information is a compilation from many sources and is intended to be only a general guideline for materials selection and is not all-inclusive. Please use this chart to determine whether the parts found in Entegris products will be suitable for use in your application. Contact Entegris for further chemical compatibility support. WETTED PART MATERIALS OF CONSTRUCTION Sensing and control products are manufactured with high-purity and inert materials of construction. Flowmeters and pressure transducers have three wetted parts that contact the process fluid which are the body, sensor interface and primary seal. Integrated flow controllers have an additional wetted part which is the valve diaphragm. The wetted parts for the proportional control valve are the body and valve diaphragm. For modelspecific wetted materials, visit entegris.com and search sensing and control products. NONWETTED PART MATERIALS OF CONSTRUCTION Each application has different material specifications. Use this guide to select materials to withstand mild to harsh environments, with particular attention to chemical attacks from splashes, spraydown and corrosive vapors. The internal electronics are fully encapsulated for additional protection against corrosive fumes.
2 ENTEGRIS CHEMICAL COMPATIBILITY CHART FOR SENSING AND CONTROL PRODUCTS Wetted parts B: May not be suitable for wetted parts in high-purity applications. C: Not recommended for wetted parts in high-purity applications. Sensor interface material code guide: P1 Aqueous acids and bases up to 40 C (104 F) maximum Dilute HF 1% and below* P2/P8 Solvents, slurry, aqueous acids and bases above 40 C (104 F) P5 HF only P7 Aqueous acids and bases up to 40 C (104 F) maximum including 49% HF and below *Contact Entegris for long-term product performance in dilute HF. WETTED SURFACES SENSOR INTERFACE BODY PRIMARY SEAL CTFE** PFA** CTFE** CTFE (HF compatible) Sapphire PTFE/ PTFM PFA LF 6375UP (Default) type -P1 -P2/-P8 -P7 -P5 -U1 or -S1 -U2 or -S2 -U3*** or -S3 Acids Acetic A/B B A/B D A A A A C A HFN A B A D A A A A/B B/C A/B Hydrochloric (HCl) Hydrofluoric (HF) A B A D A A A A A A B C A A A A A A B A Nitric (HNO 3 ) A B A D A A A A/B B/C A Phosphoric (H 3 PO 4 ) Sulfuric (H 2 SO 4 ) Bases Oxidants Ammonium fluoride (NH 4 F) Ammonium hydroxide (NH 4 OH) Potassium hydroxide (KOH) Hydrogen peroxide (H 2 O 2 ) A A A D A A A B A/B A A B A D A A A B A/B A Dissolved ozone A A A D A A A B B A/B Dissolved chlorine B A B D A A A B B/C B 2
3 Wetted parts (continued) B: May not be suitable for wetted parts in high-purity applications. C: Not recommended for wetted parts in high-purity applications. WETTED SURFACES SENSOR INTERFACE BODY PRIMARY SEAL CTFE** PFA** CTFE** CTFE (HF compatible) Sapphire PTFE/ PTFM PFA LF 6375UP (Default) type -P1 -P2/-P8 -P7 -P5 -U1 or -S1 -U2 or -S2 -U3*** or -S3 Acetone B A B D A A A A A A n-butyl acetate B A B D A A A A A A Ethylene glycol Isopropyl alcohol Methanol Methyl ethyl ketone (MEK) n-methyl pyrrolidone (NMP) Tetramethylammonium hydroxide (TMAH) C A C D A A A A A A B A B D A A A A A A A B A D A A A B A A categories Acetates B A B D A A A A A A Alcohols Amines B A B D A A A C A A Hydrocarbons, aromatic Hydrocarbons, alkane B A B D A A A A A A A/B A A/B D A A A A A A Ketones B A B D A A A A A A Media temperature High temperature (>40 C [104 F]) B A B C C A A A/B A A **The suitability of CTFE and PFA is based on both chemical resistance and permeability. ***Recommended for new application. Notes: The compatibility chart is compiled from information published by Entegris, DuPont Dow Elastomers, Welch Fluorocarbon, Little Giant Pump Company, the PDL Handbook and Compass Corrosion Guide. Entegris neither represents nor warrants the accuracy or sufficiency of the information set forth in this chart for specific end-user applications. Ultimate responsibility for material selection remains with the end user. Nothing in this chart constitutes change to the terms and conditions under which the Entegris product was sold. 3
4 Nonwetted parts B: Acceptable, suitable for nonwetted parts in most applications. C: May be suitable for nonwetted parts in some applications. type PVDF PP PE Nylon PVC FEP Viton Delrin PUR Polyester Acids Acetic B B B C C A B B C B HFN B C B D D D D D D D Hydrochloric (HCl) A, B B B C C A D C C C Hydrofluoric (HF) A B B C C A C C C C Nitric (HNO 3 ) B C B C C A B C C C Phosphoric (H 3 PO 4 ) A B B C A A A C C C Sulfuric (H 2 SO 4 ) B C B C B A A C C C Bases Ammonium fluoride (NH 4 F) A A B A, B A, B A A D D D Ammonium hydroxide (NH 4 OH) A A B B A A C C C C Potassium hydroxide (KOH) A A B B A A C B C C Oxidants Hydrogen peroxide (H 2 O 2 ) A B B C A, B A A C A, B C Dissolved ozone A C C C A A A C A C Dissolved chlorine A C B C D A B C C C 4
5 Nonwetted parts (continued) B: Acceptable, suitable for nonwetted parts in most applications. C: May be suitable for nonwetted parts in some applications. type PVDF PP PE Nylon PVC FEP Viton Delrin PUR Polyester Acetone C A B A C A C B C A, B n-butyl acetate B C C A A, B A C B C A Ethylene glycol B A B A A A A A, B A, B A, B Isopropyl alcohol A A B A, B A A A A C A Methanol A A B C A A C A C A Methyl ethyl ketone (MEK) C B C A C A C A, B C A n-methyl pyrrolidone (NMP) C B B C D D D D D D Tetramethylammonium hydroxide (TMAH) A A D D D A D D D D categories Acetates B B C A C A D A C D Alcohols A A B A, B A A D A C D Amines C B C D C A C A D D Hydrocarbons, aromatic B C C A C A B A, B C C Hydrocarbons, alkane B C B D D D D D D D Ketones B B C A C A D A, B C C Media temperature High temperature (>40 C [104 F]) A B A D D D D D D D Notes: The compatibility chart is compiled from information published by Entegris, DuPont Dow Elastomers, Welch Fluorocarbon, Little Giant Pump Company, the PDL Handbook and Compass Corrosion Guide. Entegris neither represents nor warrants the accuracy or sufficiency of the information set forth in this chart for specific end-user applications. Ultimate responsibility for material selection remains with the end user. Nothing in this chart constitutes a change to the terms and conditions under which the Entegris product was sold. 5
6 FOR MORE INFORMATION Please call your Regional Customer Service Center today to learn what Entegris can do for you. Visit entegris.com and select the Contact Us link to find the customer service center nearest you. TERMS AND CONDITIONS OF SALE All purchases are subject to Entegris Terms and Conditions of Sale. To view and print this information, visit entegris.com and select the Terms & Conditions link in the footer. Corporate Headquarters 129 Concord Road Billerica, MA USA Customer Service Tel Fax Toll Free Entegris, the Entegris Rings Design, Pure Advantage, InVue, and NT are trademarks of Entegris, Inc. Delrin, Viton and are trademarks of E. I. du Pont de Nemours and Company Entegris, Inc. All rights reserved. Printed in the USA ENT
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