dissolved in conc. 316 stainless steel will rust after a long time. Increasing temperature quickly makes the steel useless. Where condensation of sulfur-bearing gases occurs, these alloys are much more resistant than other types of stainless steels. CHEMICAL COMPATIBILITY CHART . Sulfuric Acid is also referred to as oil of vitriol and vitriol. The addition increases corrosion resistance, particularly against chlorides and other industrial solvents. Once fully diluted the corrosion will be insignificant. Sulfuric acid Type 304 can be used at room temperature for concentrations over 80%. But again, the internet is overflowing with free information on corrosion resistance of most type/grades of stainless steels, or perhaps you would have . Acetic Acid B D D D B D C C A - C - A D D C C D C B A C C B C Acetic Acid 20% B D D B A C C A A C B . For example: Grades 316 and 317 offer resistance to phosphoric acid at most concentrations and sulfuric acid at concentrations below 10 percent. 304 Stainless Steel Corrosion Compatibility Chart Chemical Compatibility Acetaldehyde A-Excellent Acetamide B-Good Acetate Solvent A-Excellent Acetic Acid D-Severe Effect Acetic Acid 20% B-Good Acetic Acid 80% D-Severe Effect Acetic Acid, Glacial C-Fair Acetic Anhydride B-Good The contact of carbon steel with concentrated sulfuric acid generates an immediate acid attack with the formation of hydrogen gas and ferrous ions, which, in turn, form a protective layer of FeSO 4 on the metallic surface. Chemical Compatibility Chart . Satisfactory to 72F (22C) 2. 316L stainless steel means that the metal is clearly corrosive. Our products can be exposed to a huge variety of chemicals. Stainless steel is generally resistant to acidic corrosion. C and then more quickly to about 5% at 60 deg. The molybdenum gives Grade SS 316 high corrosion resistant properties and particularly high resistance to pitting and crevice corrosion in chloride environments. C = Fair. Satisfactory to 72F (22C) 2. Abstract. Corrosion of types 304, 304L, 316, and 316L stainless steel (SS) during the esterification of acetic acid and alcohol or glycol ether was investigated. Service tests are most reliable in deter-mining optimum material, and ASTM G4 is a recommended practice for carrying out such tests. The key difference is that 316 stainless steel incorporates about 2 to 3 percent molybdenum. Hydrochloric Acid. Corrosion Resistant than the Conventional 304/304L Stainless Steel Alloy 316-316L 06/2014 www.SandmeyerSteel.com SANDMEYER STEEL COMPANY ONE SANDMEYER LANE PHILADELPHIA, PA 19116-3598 . Stainless Steel Chemical Resistance Chart Chemicals C-E A = Excellent. From the chemical composition, SS 316 has lesser chromium, and more nickel, and unlike SS 304, it has 2% molybdenum. Alloy 20 - contains more nickel and chromium than 300 series stainless steel and with the addition of columbium that retards stress corrosion cracking and has improved resistance to sulfuric acid. B = Good, Minor Effect, slight corrosion or discoloration C = Fair, Moderate Effect, not recommended for continuous use. B = Good. The catalyst for this reaction, sulfuric acid or para-toluene sulfonic acid (PTSA), was shown to cause more corrosion on reactor equipment than CH {sub 3}COOH under the process . A concentration limit of 22% maximum at 20 . Physical Properties of type 316 and 316L steels: Density: .799g/cubic centimeter. By using this Steel finder online tool you agree to be bound by the Disclaimer. Minor Effect, slight corrosion or discoloration. 304 is an excellent general grade of stainless steel. D = Severe Effect, not recommended for ANY use. A = Excellent. The alloying addition of copper is most beneficial to extending the resistance of stainless steel in intermediate concentrations of sulphuric acid. Stainless Steel Hastelloy Inconel Elgiloy Carbon Steel Aluminum Titanium Brass Aluminum Bronze CHEMICAL 302 304 316 316L . Abstract The corrosion behaviour of 316L stainless steel (316L SS) in 10% H2SO4 solution (94C) with various concentrations of NaCl (0-0.085 mol/L) was studied by immersion corrosion test and polarization methods, combined with SEM/EDS, XPS and XRD tests. B = Good, Minor Effect, slight corrosion or discoloration C = Fair, Moderate Effect, not recommended for continuous use. Type 316 can be used in contact with sulfuric acid up to 10% at termpera- tures up to 120F (50C) if the solutions are aerated; the attack is greater in airfree solutions. However, exact resistance levels will depend on the steel in use, concentration, and types of acid, and environmental temperature. The challenge is to select a material that will corrode the least. Acceptable above about 90% at room temperature. In sulfuric acid contaminated by chloride ions, 2205 shows much better resistance than 316L and has similar resistance to 904L. Softening, loss of strength, or swelling may occur. Types 316 and 316Ti are considerably more resistant than any of the other chromium-nickel types to solutions of sulfuric acid. PTFE ABS (GF) Acetal (Delrin) Viton EPDM Nitrile Silicone St Steel 303/304 St Steel 316 Aluminium Brass Hastelloy C Titanium Alumina Ceramic Ceramic Magnet ASTM Oil No.1 A A A A A X A L ASTM Oil No . Minor Effect, slight corrosion or discoloration. 304 grade. The information, materials and opinions provided by this Steel finder online tool are for general purposes only and are not intended to constitute professional advice or warranty of any kind. Stainless steel is generally resistant to acidic corrosion. 302 Stainless Steel 304 Stainless Steel 316 Stainless Steel 440 Stainless Steel Aluminum TITANIUM NICKEL ALLOY C276 (HASTELLOY ) Cast Bronze Brass Cast Iron Carbon Steel POLYVINYLIDENE FLOURIDE (KYNAR ) PVC (Type 1) Tygon (E-3606) PTFE Polyphenylene Oxide (Noryl ) Polyacetal Nylon ABS (Cycolac) Polyethylene POLYPROPYLENE POLYPHENYLENE . The line is 316L stainless and injection quill is CPVC. Talk to a trusted advisor Access Expert-Level Services 316 Stainless Steel Stainless Steel In all stainless steels, chromium and nickel are critical for corrosion resistance and ductility. In sulfuric acid solutions, the acid concentration has a strong influence on the rate of attack. more saline or chloride-exposed environments. Type 304 is only resistant to up to 3% acid at room temperature while type 316 is resistant to up to 20% acid at temperatures of up to 50 C. This suggests that type 304 is not suitable for use with sulfuric acid solutions. Sulfuric acid. Does 316 stainless steel rust? C. Softening, loss of strength, swelling, may occur. The acid will be diluted from 93% to less than 1% at the injection point. Silicon stainless steels such as grade 1.4361 should be considered for hot, very . B = Good. D = Severe Effect, not recommended for ANY use. Temperature Conversion The 304 types are preferable to 316 types for nitric acid applications however. Weight loss method was . Nickel: Monel Iconel Hastalloy C Acetic Acid (20%) 21 A A A A A A Acetic Acid (50%) 21 . Due . C = Fair, Moderate Effect, not recommended for continuous use. SULFURIC ACID 75% to 93% Sulfuric Acid (H2SO4) is a very corrosive, very dense, oily liquid. Boletic Acid (fumaric acid) B Bone Oil (Dippel's oil) A Borax (sodium borate) A Boric Acid A Brake Fluid A Brewery Slop A Brine (salt water) B Bromic Acid, 3.1% D Bromine Gas, dry D Tests should cover condi- The failure occurred in a flanged elbow fabricated from 316L stainless steel (UNS S31603), which was leaking acid from perforations formed adjacent to a welded flange. B = Good, Minor Effect, slight corrosion or discoloration. 316 stainless steel is the most widely used material for pump heads, check valves, balls and other wetted components. Looking specifically at sulfuric acid, Type 316 is more protective. It can range from colorless to dark brown depending on its purity and used in the manufacture a huge variety of substances including chemicals, fertilizers, paints, detergents, and explosives. 316L is preferred in many instances, particularly. These corrosion data are mainly based on results of general corrosion laboratory tests, carried out with pure chemicals and water solutions nearly saturated with air (the corrosion rate can be quite different if the solution is free from oxygen). Temperature Conversion Moderate Effect, not recommended for continuous use. 5984,316, 6,161,838, and others, as well as foreign patents or products where patents are pending.Other patents pending. 316L Stainless Steel Chemical Compatibility Chart ver 16-Oct-2018 Chemical Chemical Acetaldehyde A Allyl Phenol A Acetamide A Alum Ammonium (ammonium aluminum sulfate) A Acetate Solvents, crude A Alum Chrome (chromium potassium sulfate) A Acetate Solvents, pure A Alum Potassium (potassium aluminum sulphate) A Acetic Acid, 10% A Aluminum Acetate A 316 stainless steel is the most widely used material for pump heads, check valves, balls and other wetted components. Figure 1. N/A = Information Not Available. Explanation of Footnotes 1. 304 stainless steel: 18% chromium, 8% nickel. Duplex stainless steel containing copper, such as grade 1.4501 can also be considered for sulphuric acid service. The selection of stainless steel 304 or stainless steel 316 types for applications involving prolonged contact, such as storage tanks, is not advisable. Softening, loss of strength, swelling, may occur. When the sulfuric acid-free electrolyte was used to electropolish the 316L stainless steel, the X-ray photoelectron spectroscopy (XPS) analysis shows that atomic Cr/Fe ratio of 316L stainless . The key difference between stainless steel. Duplex steel grades contain large magnitude of chromium that enables them to offer good corrosion resistance in the different environments. Type 304 is only resistant to up to 3% acid at room temperature while type 316 is resistant to up to 20% acid at temperatures of up to 50 C. This suggests that type 304 is not suitable for use with sulfuric acid solutions. Satisfactory to 120F (48C) Ratings: Chemical Effect. Type 316 stainless steel is an austenitic chromium-nickel stainless and heat-resisting steel with superior corrosion resistance as compared to other chromium-nickel steels when exposed to many types of chemical corrodents such as sea water, brine solutions, and the like. Moderate Effect, not recommended for continuous use. Sulphuric Acid, Austenitic Stainless Steel _____ INTRODUCTION Corrosion is the destruction of a material resulting from . 316L Stainless Steel Chemical Compatibility Chart ver 10-Jan-2020 industrials Key to General Chemical Resistance [all data based on 72 (22 C) unless noted] Explanation of Footnotes 1 - Satisfactory to 120 F (48 C) A = Excellent - No Effect C = Fair - Moderate Effect, not recommended Looking specifically at sulfuric acid, Type 316 is more protective. . The susceptibility and resistance of type 304 austenitic stainless steel exposed to sulphuric acids (0.3M to 1M concentrations) at ambient temperatures and at higher temperatures were investigated. The presence of molybdenum gves this stainless steel better overall corrosion resistance properties than types 301 and 304 stainless steel. Softening, loss of strength, or swelling may occur. Type 304 stainless steel contains 18% chromium and 8% nickel while Type 316 contains 16% chromium . This addition drastically enhances the corrosion and oxidation resistance of the alloy . Although a passive layer forms naturally in alloys with a chromium content of between 10.5% and 12%, stainless steel equipment should be treated . Alleima startpage Technical center Corrosion tables Sulphuric acid. The isocorrosion diagram for sulfuric acid is shown to the right. Stl. However, exact resistance levels will depend on the steel in use, concentration, and types of acid, and environmental temperature. Increasing amounts of chromium and molybdenum contents in stainless steel provide increasing resistance to reducing acids. Graph of 316L stainless steel weight loss by immersion in acid sulphate (H 2SO 4) at concentration 0.5 M in 1, 2 and 3 hours with temperature variations of 50 oC, 70 oC and 90 C. Type 304 is only resistant to up to 3% acid at room temperature while type 316 is resistant to up to 20% acid at temperatures of up to 50 C. The influence of NaCl on the corrosion of 316L SS was investigated. . Satisfactory to 120F (48C) Ratings: Chemical Effect A = Excellent. Stainless Steel Chemical Resistance Chart Chemicals F-L A = Excellent. grades 304 and 316 is the addition of molybdenum, an alloy that drastically enhances corrosion resistance, especially for. The data table below is an application guide, and indicates the . then 0.03%), and has even better corrosion resistance than. and greater than 85% wt. The key difference between these two grades is the addition of 2~3% of molybdenum (Mo) to the 316 family of stainless steels. Type 316 stainless steel in an environment of 25% phosphoric acid, and Figure 3 shows effects of temperature on Types 304 and 316 in very concentrated sulfuric acid. Type 316/316L stainless steel is a molybdenum beraing grade of steel. Satisfactory to 72F (22C) 2. N/A = Information Not Available. Over 95% concentration, aluminium alloys should be considered OR 4% silicon stainless steels. Grade SS 904L is a non-stabilised low carbon high alloy austenitic stainless steel. Satisfactory to 120F (48C) Ratings: Chemical Effect A = Excellent. I am aware that 316L has good resistance to high concentrations (>80%) as well as low concentrations (<10%) sulfuric acid. Type 316 gives useful service at room temperature in sulphuric acid of concentrations lower than 15% wt. This is an exception to the 'general rule' for stainless steels where the 316 types are normally found to be more corrosion resistant than 304 types. The different properties and applications exhibited by both grades come as a result of these differences. - No Data Aluminum Carbon Steel Cast/Ductile Iron 304 Stainless Steel 316 Stainless Steel Acetal Buna CSM (Hypalon) EPR, EPDM Fluorocarbon Fluoroelastomer (FKM) Geolast (Buna & . It's a silicon based nano-coating applied to stainless steel using chemical vapor deposition, giving it corrosion resistance at temperatures that PTFE can't handle, and at a fraction of the cost of a nickel based alloy. The corrosion of carbon steel storage tanks and pipes by concentrated sulfuric acid is a great concern. The results showed that at lower NaCl contents (0-0.0085 mol/L . Just indicative, 20% sulphuric acid at 20 deg C would cause a corrosion rate of over 100 micrometers/year on SS 316 and over 1000 micrometers/year at 80 deg C even in small concentration (1-5%). When considering a steel option, fume hood liners typically come in Type 304 or Type 316 Stainless Steel. Explanation of Footnotes 1. Fuel Oil (containing sulphuric acid) C B B B B A Gallic Acid (5% solution) 21 A A A A A B Gallic Acid (5% solution) 66 . 304/304H 310M 316/316L Avesta 254 SMO: Ordinary steels if not protected from the atmosphere will oxidize or rust. AL-6XN alloy is identified by the Unified Numbering System (UNS) designation of N08367. Types 304, 321 and 347 can normally be used only in very dilute sulfuric acid applications at room temperature, and show equally good resistance to corrosion. 316 Stainless St.) **(OK Fluorinated/TEST) Boric Acid BH3O3 A A to 140 A to 200 A to 212 A A A to 150 A to 175 A A to 5% to 70 A to 70 A to 200 A to 125 A to 185 A to 176 A A to 140 A to 70 A to 70 (Orthoboric Acid, Hydrogen Orthoborate) (10043-35-3) AB > 140 B > 185 AB > 176 AB 140-200 LAB CORROSION DATA FOR STAINLESS STEEL Media Temp Type Media Temp Type Media Temp Type + 304 316 + 304 316 + 304 316 Acetic Acid Carbolic acid B l l Hydrocyanic acid 70 l l 10% 70 l l Carbon tetrachloride diluted 1:85 70 lll ll B l l pure (dry) 70 l l B V V . The mill uses uninhibited 10 wt.% NH 2 HSO 3 at 65 C to clean the lime mud pressure filters. My only concern is the potential for . It describes duplex stainless steel 2205 offers significantly better resistance than SS 904l. Commonly found in marine applications, 316 stainless steel contains 2. to 3% molybdenum, while 304 has none. 304 and 316 stainless steel substrates are among the most commonly used grades of stainless steel materials in many industries. From the data of corrosion rate calculation to immersion with sulfuric acid 0.5 M for 1 Technical center. H2SO4 140 l l 25% and 50% 70 l l + 3% sulphuric acid 400 lll The difference between the two is their makeup. -SS 316 L that is used in a sulfuric acid plant with a concentratio n of 98.5 % H2SO4 and 84-88 o C temperature, occurs damage form which follo ws the pattern of erosion corrosion . 10% Sulfuric Acid 122 140 167 60% Sulfuric Acid <54 <59 <57 96% Sulfuric Acid 113 77 86 85% Phosphoric Acid 203 176 194 203 . 17-12-2.5, (1.4401, 316) - This grade offers a significant advantage over 304 at low concentrations, up to 22% at room temperature only gradually falling with temperature up to 40 deg. Is 316 stainless steel suitable for Sulphuric acid? STAINLESS STEEL . Type 317 may be used at temperatures as high as 150F (65C) with up to 5% concentration. affect the compatibility of the fluid with the given pump . Stainless Steel 316,316L Stain. . contains molybdenum and has a low carbon content (less. 316 stainless steel has additional molybdenum that gives it resistance to chlorides and other processing chemicals. The addition of >10% chromium transforms steel into stainless steel, creating an adherent and invisible oxide layer that is chromium-rich. Following diagram shows the corrosion resistance in sulfuric acid. Phenol (Carbolic Acid) B-Good: Page 9 of 13 Kelco 15/12/2008: Phosphoric Acid (>40%) D-Severe Effect: Phosphoric Acid (crude) B-Good: Electrical resistivity: 74 microhm-centimeters (20 degrees Celsius) Specific Heat: 0.50 kiloJoules/kilogram-Kelvin (0-100 degrees Celsius) Thermal conductivity: 16.2 Watts/meter-Kelvin (100 degrees Celsius) Modulus of Elasticity (MPa): 193 x 10 3 in tension. 2. It is an austenitic stainless steel alloy with high nickel (24%), chromium (22%), molybdenum (6%), and nitrogen (0.18%) content and is commonly known as superaustenitic stainless steel (alloys such as 254 SMO (UNS S31254) and 904L (UNS N08904) also fall . These types of liners are designed to provide greater life expectancy in harsh environments. Dursan also has hydrophobic properties resisting sludge buildup and reducing surface adhesion. All metals corrode to some degree in contact with sulphuric acid. C = Fair. The chromium combines with oxygen to form chromium oxide (Cr2O3 - two atoms of chromium and three of oxygen, though there is another form of chromium oxide with one atom of chromium and one of oxygen). Grade 316L is the low carbon version of SS 316. Grade SS 316 is the standard molybdenum-bearing grade. in pharmaceutical, cosmetic, food and dairy applications. This work presents a review of carbon steel corrosion in concentrated . Austenitic Stainless Steel. 316L. Stainless steel is not that it cannot rust, but it is not easy to rust. Alloy 20 - contains more nickel and chromium than 300 series stainless steel and with the addition of columbium that retards stress corrosion cracking and has improved resistance to sulfuric acid. resistance of stainless steel is the efficiency sum (W) of % Cr + 3.3 x % Mo + 30 x % N. The influence of nitrogen as an alloying element is, however, more complex than expressed by this equation. The high efficiency expressed in the factor of 30 will only apply in full in the case of high-alloy steels with increased molybdenum contents. D = Severe Effect, not recommended for ANY use. - Acid, sulphuric 70% to 90% H2SO4 above ambient temperature - Acid, oleum H2SO4 (Nordhousen, fuming sulphuric) . 316 Stainless Steel Chemical Compatibility Chart ver 10-Jan-2020 industrialspe . Softening, loss of strength, or swelling may occur. Type 316 has much better resistance to dilute sulfuric and can be used in a broader range of temperatures and concentrations. Acid, Sulfuric, Fuming (Oleum) NR NR NR Q A A NA NA NA NA NA NA NA Acid, Sulfurous, Wet NR NR . 2507, and to some extent . 316L Stainless Steel Chemical Compatibility Chart ver 10-Jan-2020 Chemical Chemical Acetaldehyde A Allyl Phenol A Acetamide A Alum Ammonium (ammonium aluminum sulfate) A Acetate Solvents, crude A Alum Chrome (chromium potassium sulfate) A Acetate Solvents, pure A Alum Potassium (potassium aluminum sulphate) A Acetic Acid, 10% A Aluminum Acetate A Acetic Acid, 20% A Aluminum Chloride, 10% B . Hydrochloric Acid 304L and 316L have very limited use in hydrochloric acid due to the risk of general and localized corrosion. Looking specifically at sulfuric acid, Type 316 is more protective. D = Severe Effect, not recommended for ANY use. 316 stainless steel: 16% chromium, 10% nickel and 2% molybdenum. Since Type 316 stainless steel alloy contains molybdenum bearing it has a .