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Selection of Stainless Steel for Hydrofluoric Acid HF

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Selection of Stainless Steel for Hydrofluoric Acid HF

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  • Description: The approach to the selection of stainless steel is similar to that for hydrochloric acid. Commercially concentrated acid is around 40wt. %. Plastics are normally considered for handling hydrofluoric acid. The common stainless steel types,304 and 316should be considered non-resistant to hydrofluoric acid at any concentration and temperature.Selection of Stainless Steel for Hydr ...
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How does HF affect stainless steel?How does HF affect stainless steel?When a small AHF leak or diffusion mixes with moisture in the air it forms a highly corrosive aqueous HF acid. This will corrode both carbon steel and stainless steel very fast. The same effect happens with HF leak or diffusion. Corrosion of metallic materials will increase with temperature.Materials of construction - Eurofluor(plate) Selection of Stainless Steel for Hydrofluoric Acid HF

Hydrofluoric Acid is extremely aggressive and attacks most metals and glass. The approach to the selection of stainless steel is similar to that for hydrochloric acid. Commercially concentrated acid is around 40wt. %. Plastics are normally considered for handling hydrofluoric acid. The common stainless steel types, 304 and 316 should be considered non-resistant to hydrofluoric acid at any (plate) What is the selection of stainless steel?What is the selection of stainless steel?Selection of Stainless Steel for Handling Hydrofluoric Acid HF. Hydrofluoric Acid is extremely aggressive and attacks most metals and glass. The approach to the selection of stainless steel is similar to that for hydrochloric acid.Selection of Stainless Steel for Hydrofluoric Acid HF

What materials are used in hydrofluoric acid?What materials are used in hydrofluoric acid?This article provides the corrosion data for materials in hydrofluoric acid (HF) and anhydrous hydrogen fluoride (AHF). These materials include carbon and low-alloy steels, austenitic stainless steels, nickel-rich austenitic stainless steels, nickel and nickel-base alloys, copper alloys, precious metals, and non-metals.Corrosion by Hydrogen Fluoride and Hydrofluoric Acid Selection of Stainless Steel for Hydrofluoric Acid HF(plate) AP-42, CH 8.7 Hydorfluoric Acid

Traditionally, hydrofluoric acid has been used to etch and polish glass. Currently, the largest use for HF is in aluminum production. Other HF uses include uranium processing, petroleum alkylation, and stainless steel pickling. Hydrofluoric acid is also used to produce fluorocarbons used in aerosol sprays and in refrigerants.(plate) Alloy selection for service in hydrogen fl uoride, hydrofl Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Hydrogen fluoride (HF) is a gas at room temperature. When dissolved in water it forms hydrofluoric acid. Hydrogen fluoride and hydrofluoric acid are available in four grades polyvinylidene fluoride (PVDF). HF is also used in a number of anhydrous hydrogen fluoride (AHF), 70% hydrofluoric acid, 48% reagent-grade hydrofluoric acid, and

CLEANING AND DESCALING STAINLESS STEELS

to stainless steel for protection age in fairly short periods of time (several Selection of Stainless Steel for Hydrofluoric Acid HF care must be exercised in the selection of acid Selection of Stainless Steel for Hydrofluoric Acid HF for all situations. COMMONLY USED ACIDS The acids most commonly used for pickling stainless steels are . 5 nitric (HNO 3), hydrofluoric (HF), sulphuric (H (plate) CORROSION HIGH Ni-Cr ALLOYS AND TYPE 304L (steel) Corrosion will be most severe in HNO3-HF used occasionally for flushing and in solutions of "03 and corrosion products (ferric and dichromate ions). HF corrosion can be minimized by complexing the fluoride ion and by passivation of the steel with strong nitric acid. corrosion products can be minimized by operating at lawer temperatures.(plate) Cited by 13Publish Year 2018Author Guobo Zou, Wei Shi, Song Xiang, Song Xiang, Xuanming Ji, Guoqiang Ma, R. G. BallingerCorrosion inhibition of 13Cr, Super 13Cr, and 15Cr Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Oct 01, 1995This paper presents and discusses the results of a laboratory study of the corrosion inhibition of 13Cr, Super 13Cr, and 15Cr martensitic stainless steel exposed to half strength mud acid solutions (7{1/2}wt.% HCl + 1{1/2}wt.% HF) over the temperature range of 210--250 F (99--121 C).

Cited by 168Publish Year 2012Author Lester Li, Victor Breedveld, Dennis W. HessXOMOX&Tufline&Tertiary Top Seal Sleeved Plug Valves Selection of Stainless Steel for Hydrofluoric Acid HF

For Alkylation Unit that is looking for robust valve design with high corrosion resistancy. XOMOX&Hydrofluoric Sleeved Plug Valves is capable to offer Tertiary Top Seal design that is listed by UOP & ConocoPhillips Petroleum Company.(plate) Cited by 1Publish Year 2006Author Herbert S. JenningsSafe Handling of Hydrogen Fluoride and Hydrofluoric Acid(steel) is typically stored and sold in stainless steel compressed gas cylinders. It is more often used as an aqueous solution (hydrofluoric acid). Concentrated hydrofluoric acid solutions (typically sold as 48% to 52% by weight, though industrially grade is as high as (plate) Cited by 3Publish Year 1945Author William E. McKee, William F. HamiltonDESIGN GUIDELINES FOR THE SELECTION AND USE OF (steel) Reference is often made to stainless steel in the singular sense as if it Selection of Stainless Steel for Hydrofluoric Acid HF acid environments. Material Selection Many variables characterize a corro-sive environment i.e., chemicals and Selection of Stainless Steel for Hydrofluoric Acid HF shows small quantities of hydrofluoric and sulfuric acids having a serious effect on

Cited by 3Publish Year 1994Author Yoshihito Fujiwara, Atsushi Mizukami, Michio Morooka, Takashi Sueyoshi, Toshihiko Yanai, , Selection of Stainless Steel for Hydrofluoric Acid HFAcids & other Aggressive Chemicals British Stainless Selection of Stainless Steel for Hydrofluoric Acid HF

Selection of stainless steels for handling hydrofluoric acid (HF) Hydrofluoric Acid is extremely aggressive and attacks most metals and glass. The approach to the selection of stainless steels is similar to that for hydrochloric acid. Selection of stainless steels for handling hydrochloric acid (HCl)(plate) Cited by 3Publish Year 2020Author Xu Chen, Lin Yang, Hailong Dai, Shouwen ShiElectrochemical corrosion behavior of 2205 and 316L Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Apr 02, 2021The electrochemical behaviors of 2205 duplex stainless steel flange and 316L stainless steel flange in 5% (volume fraction) HF solution were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The semiconductor properties of the passive films on the surfaces of the two stainless steels were analyzed by Mott schokkty curves. The results show that (plate) Corrosion behavior of 904L austenitic stainless steel in Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Corrosion behavior of 904L austenitic stainless steel in hydrouoric acid Guobo Zou,a Wei Shi,a Song Xiang, *ab Xuanming Ji,a Guoqiang Maa and R. G. Ballingerb Corrosion behaviors of 904L austenitic stainless steel in HF and HCl were studied and compared using electrochemical method, microscopic analysis, and phase analysis.

Corrosion behavior of 904L austenitic stainless steel in Selection of Stainless Steel for Hydrofluoric Acid HF

IntroductionExperimental Methods and MaterialsResultsDiscussionConclusionsAcknowledgementsThere are few studies on stainless steel corrosion in HF. Mason1 found that certain amount of HF forms a stable iron fluoride on the metal surface, which effectively inhibits stainless steel corrosion by HNO3. Li2 investigated the effect of fluoride ion on the passivation properties of 316L stainless steel in acidic medium, and found that a fluorine-rich passivation film is formed on the stainless steel surface. By contrast, Stypula3found that fluoride ions are adsorbed at the grain boundary edge in stainless steel, See more on pubs.rscCited by 13Publish Year 2018Author Guobo Zou, Wei Shi, Song Xiang, Song Xiang, Xuanming Ji, Guoqiang Ma, R. G. BallingerHydrofluoric acid HF - PubChem(steel) Hydrogen fluoride mixes readily with water forming hydrofluoric acid. For all practical purposes, they are considered the same chemical. Hydrogen fluoride/hydrofluoric acid is used extensively in the extraction, processing, and refining of metals, rock, brick, and oil. It is an (plate) Corrosion by Hydrogen Fluoride and Hydrofluoric Acid Selection of Stainless Steel for Hydrofluoric Acid HF(steel) This article provides the corrosion data for materials in hydrofluoric acid (HF) and anhydrous hydrogen fluoride (AHF). These materials include carbon and low-alloy steels, austenitic stainless steels, nickel-rich austenitic stainless steels, nickel and nickel-base (plate) Creation of superhydrophobic stainless steel surfaces by Selection of Stainless Steel for Hydrofluoric Acid HF(steel) By passivating the HF-etched samples in a nitric acid bath, the corrosion resistant properties of stainless steels were recovered. When a three step process was used, consisting of etching, passivation and fluorocarbon deposition, 304 and 316 stainless steel samples exhibited maximum contact angles of 157.3 and 134.9°, respectively, while Selection of Stainless Steel for Hydrofluoric Acid HF

Estimated Reading Time 1 minDetermination of hydrofluoric acid in strong acid Selection of Stainless Steel for Hydrofluoric Acid HF

Jul 01, 1973The interference from hydrofluoric acid and from cations in the concentrations used in HF IN STRONG ACID SOLUTIONS 421 stainless steel pickling baths could be neglected. When 4 M potassium chloride was used as bridge solution in the reference electrode, the electrode response was linear when plotted against the concentration of nitric acid.(plate) Estimated Reading Time 3 minsAnalysis of Hydrofluoric-Nitric Acid Stainless Steel Selection of Stainless Steel for Hydrofluoric Acid HF(steel) This article is cited by 3 publications. J. P. McKaveney. Spectrophotometric method for hydrofluoric acid in stainless steel pickling baths.(plate) Exploring factors controlling pre-corrosion fatigue of Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Jul 01, 2020Due to its strong corrosiveness and small atomic radius, the corrosion fatigue damage of metals in HF is more serious than in other media. 316L austenitic stainless steel is widely used in pressure vessels for its excellent mechanical properties and good corrosion resistance , especially in the field of fluorine chemical industry for transportation pipeline and storage equipment of HF and its mixed medium. However, few reports on the corrosion fatigue behavior of 316L in HF

File Size 147KBPage Count 6Chemical Resistance Chart - Jasper - Eng

Thus the final responsibility of material selection resides with the user who knows the specific process conditions. The data presented in this guide is based on published data and field Selection of Stainless Steel for Hydrofluoric Acid HF Nitric acid + Hydrofluoric acid HNO3 / HF (1:1) + + - + Oxalic acid (COOH)2 + + + o o + o + + Petrol / Gasoline + + - (plate) HF Alky Piping Failures - Inspectioneering(steel) IntroductionExaminationsSummaryReferencesThis article provides a discussion of a recent inspection performed at a U.S. refinery. Industry HF lines are experiencing piping failures in increasing numbers due to the presence of residual elements (such as Cr, Ni, and Cu among others) entrained within their carbon steel components. Because of this, a non-destructive testing (NDT) inspection program was developed to identify and quantify this highly localized corrosion in carbon steel piping, along with assessing for damage in butt joints between different piping See more on inspectioneeringHYDROFLUORIC ACID SAFETY GUIDELINES - Concordia(steel) The mechanism of HF burns is linked to the dual corrosive and toxic effects of the hydrofluoric acid. HF toxicity originates from a combination of its acidic properties and its ability to release toxic fluoride anions inside cells. The reason for this toxicity is the high electronegativity of the fluoride ion which holds onto(plate) Hydroflouric Acid - Rolled Alloys, Inc.(steel) 416 stainless steel is a free-machining martensitic stainless steel with 12-13% chromium that can be hardened by heat treatment to higher strength and hardness levels. In the annealed condition, it has Selection of Stainless Steel for Hydrofluoric Acid HF

Hydrofluoric Acid (HF) Alkylation Gate, Globe & Check Selection of Stainless Steel for Hydrofluoric Acid HF

PetroValves HF Acid Vavle inventory is unsurpassed and is considered one of the most extensive Hydrofluoric Acid valve inventories in the world! PetrolValves began producing specialty valves destined for the HF Alkylation industry and for the processing of Hydrofluoric Acid in 1958.The engineering, design, production, manufacturing and quality control departments have worked, in conjunction Selection of Stainless Steel for Hydrofluoric Acid HF(plate) Hydrofluoric Acid (HF) Alkylation Seamless Pipe Supplier Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Our HF Alkylation Certified Pipe inventory is unsurpassed and is considered one of the most extensive inventories in the world! Turnarounds or outages, planned retrofits or emergency situations, grassroots projects worldwide; U.S. Metals has the experienced staff to assist you on all of your HF Alkylation requirements, no matter how detailed Selection of Stainless Steel for Hydrofluoric Acid HF(plate) Hydrofluoric Acid 40% (w/w) Reagent - Columbus Chemical(steel) Original on 02/07/2017 Page 1 of 6 Safety Data Sheet Hydrofluoric Acid 40% (w/w) Reagent 1. PRODUCT AND COMPANY IDENTIFICATION Product Name Hydrofluoric Acid 40% (w/w) Reagent Synonyms/Generic Names Hydrogen fluoride, Fluoric acid, Fluorhydric acid, Fluorine hydride Product Number 2696 Product Use Industrial, Manufacturing or Laboratory use

Hydrofluoric Acid 5% Krystal Pure - Columbus Chemical

Revised on 01/27/2014 Page 1 of 6 Safety Data Sheet Hydrofluoric Acid 5% Krystal Pure 1. PRODUCT AND COMPANY IDENTIFICATION Product Name Hydrofluoric Acid 5% Krystal Pure Synonyms/Generic Names Hydrogen fluoride; Fluoric acid; Fluorhydric acid; Fluorine hydride Product Number 2681 Product Use Industrial, Manufacturing or Laboratory use(plate) Hydrofluoric Acid What You Need to Know EMS World(steel) Apr 28, 2010HF may be known as Hydrogen fluoride (UN 1052), hydrofluoric acid (UN 1790) or fluorohydric acid. Identification numbers are CAS number 7664-39-3, UN 1052 or RTECS MW7875000.(plate) Hydrofluoric Acid and Nitric Acid Mixtures Nitric and HF Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Hydrofluoric acid and nitric acid mixtures are used to etch the surface of titanium, stainless steel, and Nitinol medical device components to prepare them for the application of bioactive coatings. We offer off-the-shelf and custom ratios to meet your precision cleaning needs. Request a quote today.

Hydrofluoric acid Sandvik Materials Technology

Hydrofluoric acid, HF; Conc. % 0.1 0.1 0.5 0.5 0.5 0.5 0.5 1 1 1 1 1 1 10 20 20 30 75 100; Temp. °C 90 100=BP 30 40 50 60 70 20 30 40 50 60 70 20 15 25 15 30 20; Grade or type of alloy Carbon steel 2 2 0 0 13 Cr 2 2 2 1 Sandvik 1802 2 2 1 18Cr10Ni 1) 1 2 2 1(plate) Hydrogen Fluoride (Hydrofluoric Acid) - US EPA(steel) chlorofluorocarbons. (Production of fluorocarbons uses more hydrogen fluoride than production of chlorofluorocarbons). (1) Aqueous hydrofluoric acid is used in stainless steel pickling, glass etching, metal coatings, exotic metal extraction, and quartz purification. (1)(plate) Hydrogen Fluoride, Hydrofluoric Acid, and Fluorine(steel) Hydrofluoric acid (chemical formula HF) is a solution of anhydrous hydrogen fluoride in water (typically 25%, 38 or 40%, 49%, 70%, or 79%) and is the form usually shipped by railcar or in smaller tanks, and is the form usually stored at a plant site.

JPH0874079A - Method for pickling stainless steel with Selection of Stainless Steel for Hydrofluoric Acid HF

The nitric acid concn. measured by the analytical method is controlled to 0.2-2.5mol/l and the calculated hydrofluoric acid concn. to 0.2-1.5mol/l, the ratio of HF to HNO3 is kept at 0.2-1.2, and the metallic ion concn. is controlled to 40g/l. A stainless steel is pickled by using such a pickling soln.(plate) Materials of construction - Eurofluor(steel) ANHYDROUS HYDROGEN FLUORIDE (AHF) AND HYDROFLUORIC ACID SOLUTIONS (HF) Materials of construction page 6 of 25 2. MATERIALS 2.1. Metallic materials When a small AHF leak or diffusion mixes with moisture in the air it forms a highly corrosive aqueous HF acid. This will corrode both carbon steel and stainless steel very fast. The same effect(plate) NICKEL- CONTAINING ALLOYS in HYDROFLUORIC ACID, (steel) Nickel-Copper cast alloy 506 Corrosion by Hydrofluoric Acid Hydrogen fluoride is readily soluble in water over a wide concentration range, the water solutions being referred to as hydrofluoric acid. Commer-cially, this acid is marketed in concentrations from 30 to

PYROMARS plants - ANDRITZ

For regeneration of pickling acids in your steel mill, the PYROMARS (mixed acid regeneration) plant from ANDRITZ METALS is an efficient and effective solution. The high recovery rates of 99% hydrofluoric acid, 80% nitric acid, and 99% metals need no further comment.(plate) Safe Handling of Hydrogen Fluoride and Hydrofluoric Acid(steel) is typically stored and sold in stainless steel compressed gas cylinders. It is more often used as an aqueous solution (hydrofluoric acid). Concentrated hydrofluoric acid solutions (typically sold as 48% to 52% by weight, though industrially grade is as high as (plate) Selection Stainless Steel For Handling Hydrochloric Acid HCl(steel) Corrosion. Selection Stainless Steel For Handling Hydrochloric Acid HCl. Hydrochloric acidis classed as reducing acid and lacks the oxidising propertiesthat stainless steel need to maintain their 'passive' corrosion resistantsurface layer. The acid is formed as a product of the pitting / crevice corrosionmechanisms in stainless steel and so when hydrochloric acid is present in any 'external

Selection of Stainless Steel for Handling Hydrofluoric Selection of Stainless Steel for Hydrofluoric Acid HF

Jun 06, 2015Commercially concentrated acid is around 40wt. %. Plastics are normally considered for handling hydrofluoric acid. The common stainless steel types, 304 stainless steel and 316 stainless steel should be considered non-resistant to hydrofluoric acid at any concentration and temperature. Corrosion resistance of stainless steel(plate) Selection of Stainless Steel for Hydrofl(steel) stainless steel in hcl servicestainless steel acid compatibilityhydrochloric acid stainless steel corrosionhcl and stainless steel reactionhcl corrosion of stainless steelstainless steel acid resistance304 stainless steel acid resistanceacid on stainless steelSome results are removed in response to a notice of local law requirement. For more information, please see here.(plate) Selection of stainless steels for handling hydrofluoric Selection of Stainless Steel for Hydrofluoric Acid HF(steel) Selection of stainless steels for handling hydrofluoric acid (HF) Introduction. Hydrofluoric Acid is extremely aggressive and attacks most metals and glass. The approach to the selection Selection of Stainless Steel for Hydrofluoric Acid HF Corrosion resistance of stainless steels. See Corrosion Handbook for source data. The common stainless steel Selection of Stainless Steel for Hydrofluoric Acid HF

Special Application Fume Hoods - Labconco

Acid digestion hoods have PVC liners and Lexan sashes to resist etching by hydrofluoric acid. Floor-mounted hoods accommodate oversize apparatus. Perchloric acid hoods have washdown systems and either stainless steel or PVC liners to withstand acid exposure. Radioisotope Hoods have stainless steel one-piece liners.(plate) Stainless Steel - EPS - Eco Pickled Surface(steel) Stainless Steel does not use hydrochloric acid for pickling. It uses the even more hazardous hydrofluoric acid (HF) and nitric acid. That means stainless pickling lines must be dedicated to that product, so there are fewer lines and the cost is higher than pickling carbon steel. EPS pickling of stainless steel solves these problems.(plate) Stainless Steel Pickling Process Site Name(steel) IntroductionPickling with Nitric and Hydrofluoric AcidReaction Mechanism For IronConclusionIn stainless steel production process oxides are formed on the stainless steel surface during annealing and hot rolling. Under these oxides layers chromium is depleted and the steel has lost a significant amount of corrosion resistance. Thus removal of the oxide scale is necessary. Best performance and quality is reached by using chemical cleaning of the surface. This is done with an acid pickling process, where mixtures of hydrofluoric acid (HF), nitric acid (HNO3) or sulfuric acid (H2SO4) are used to remSee more on sustecNitric HF ase Study - Acid Recovery Services(steel) Recycling of Nitric-Hydrofluric Acid With Diffusion Dialysis Stainless steels can be pickled in a variety of acid solutions to remove scale and to eliminate weld and machining marks, in order to blend the final finish into the original mill finish. A common choice among stainless steel fabricators is a mixture of Nitric and Hydrofluoric acid.

What is Hydrofluoric Acid (HF)? - Definition from Selection of Stainless Steel for Hydrofluoric Acid HF

Apr 11, 2016Hydrofluoric acid (HF) is an inorganic acid. It is a solution of hydrogen fluoride in water. Hydrofluoric acid is a colorless solution and highly corrosive. It is capable of dissolving many materials, particularly oxides. It is known as contact-poison for its devastating effects on human tissues.(plate) What materials are OK with HF / nitric(steel) Material of construction for nitric-HF? 2000. I've been recommended a pickling mixture of 4% hydrofluoric acid, 12% nitric acid to remove oxide scale at 60 deg C. What materials can I use ? I guess glass is out due to the HF. Also not all plastics are compatible with nitric acid. Is stainless steel OK ? Thanks. Tony. Tony Fulford - Reading, UK(plate) Which alloy is best for use in hydrofluoric acid applications(steel) Carbon steels offer significant corrosion resistance in 64-100% hydrofluoric acid. Stainless Steels The service of stainless steel in hydrofluoric acid media is limited. Austenitic steels offer supreme resistance to attack in liquid anhydrous hydrogen fluoride at high temperatures.

The approach to the selection of stainless steel is similar to that for hydrochloric acid. Commercially concentrated acid is around 40wt. %. Plastics are normally considered for handling hydrofluoric acid. The common stainless steel types,304 and 316should be considered non-resistant to hydrofluoric acid at any concentration and temperature.Selection of Stainless Steel for Hydrofluoric Acid HF

Was this helpful?People also askCan stainless steel handle hydrofluoric acid?Can stainless steel handle hydrofluoric acid?Selection of Stainless Steel for Handling Hydrofluoric Acid HF. Hydrofluoric Acid is extremely aggressive and attacks most metals and glass. The approach to the selection of stainless steel is similar to that for hydrochloric acid. Commercially concentrated acid is around 40wt. %. Plastics are normally considered for handling hydrofluoric acid.Selection of Stainless Steel for Hydrofluoric Acid HF

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