AL-6XN has about 6% Mo and 2/3 of that is close to 4% Mo, so the welded AL-6XN metal will have about 4% Mo, which is less than the base metal. A highly alloyed super duplex stainless steel for use in seawater desalination and many aggressive environments. The use of 904L grade stainless steel ensures that the Roadmaster Icebreaker is extremely durable in extreme conditions. 904L has greater amounts of chromium and nickel than the 316L grade. Grade 904l is a recommended austenitic stainless steel for use in the applications where grades 316l or 317l cannot provide the required corrosion resistance properties. In this case, 904L stainless steel is the clear victor over 316L; with an average PREN value of 36.7, it is much stronger than 316L (which only has a PREN of 26.1). Corrosion and wear resistance: 904L stainless steel is better than 316L stainless steel in corrosion and wear resistance 3. 316L steel consists of iron, chromium (between 16-18%), nickel (10-12%), and molybdenum(2-3%) and has small (<1%) quantities of silicon . Alloys are mixtures of different chemical elements, including metals as the major component and nonmetals as a minor component. Oshwin Overseas is a well-known and trusted supplier brand of SS 904L alloy, also known as Alloy 904L.Oshwin Overseas is an ISO 9001:2008 certified company and also PED approved company. 904L stainless steel strip is a low-carbon, high-nickel, molybdenum super austenitic stainless steel strip. Stl. Grade 904L stainless steels can be solution heat-treated at 1090 to 1175C, following by rapid cooling. 904L is a non-stabilised low carbon high alloy austenitic stainless steel. Principal Design Features . However, prolonged exposure to condensates could still eventually make a stainless steel liner rust. What are 316L, 904L, Surgical Grade Stainless Steel ? Oystersteel also has other benefits than only being corrosion-resistant. In addition to watches, this alloy is also commonly used in the food industry, the medical field, and a wide . 2. The 316L Stainless steel is far less scratch resistant than the 904L because it has a much higher Rockwell hardness. Stainless Steel Alloy 904L. However, there are specific chemicals that . The steel is also resistant to stress corrosion cracking and crevice corrosion. The rest of their steel watches still used the industry standard 316L. The potential polarization curves and pitting breakdown potentials of 904L stainless steel at different aged for times are shown in Fig. Although stainless steels have a broad range of properties, in general, when compared with carbon mild steel, stainless steels have: Higher corrosion resistance Higher cryogenic toughness Higher work hardening rate Higher hot strength Higher ductility Higher strength and hardness A more attractive appearance Lower maintenance What's the difference between 316L and 904L steel? Similarly, 904L has 4% Mo, and the corrosion resistance at the weld gets closer to 316L. In addition to higher rust, corrosion, and pitting resistance, 904L polishes quite well with the correct tools and know-how. SAE 904L stainless steel. These alloys may provide longer trap service. What is a pro/con between stainless steel type 316L and 904L May 25, 2018 904L has a tensile strength of 485 MPa where 316L is 490 MPa. Heat treatment 316 stainless steel need to anneal in the temperature range of 1850-2050 o C, then anneal and cool rapidly because it cannot be hardened by overheating. Stainless Steel 904L Suppliers, Stainless Steel 904L Manufacturer, Stainless Steel 904L Stockist, Stainless Steel 904L Dealer. In aggressive nitric acid 904L has less resistance than molybdenum-free grades such as 304L and 310L. The most widely used types of stainless steel are graded as 304 and 316. 3R60 . The results showed that ASTM 316L has a corrosion rate of up to 1 mm/year in such conditions. Hastelloy and stainless steel are two such alloys which are well known for their excellent corrosion resistance. The 904L is often used for body jewelry or piercings and it is not particularly expensive. 800 per kilo. 316L > 5 904L 1.2 254 SMO 0.05 Steel Grade Corrosion Rate, mm/year 316L 0.88 317LMN 0.29 Welding of SS 904L VS SMO 254. For instance, Stahl 1.4539 could be purchased at 35% less in India, than it is being sold . Grade 904L can be subjected to hot cracking in constrained welding. However, super duplex stainless steels have some limitations in . rolex 904l super clone watches are exact 1:1 when compared to original rolex oystersteel watches. This low carbon version of Type 904 stainless steel also offers other benefits to users including: Non-magnetic. Different weights: 904L stainless steel contains molybdenum, nickel, and copper, all of which are higher than 316L stainless steel, and these three metals have a larger specific gravity than . Prodec 316L . Rolex has been using 904L stainless steel since the 1980's. Rolex first started using the 904L steel for the Rolex Sea-Dweller, their line of ultra-resistant professional diving watches. Only Swiss based watch factories are using 904L steel because it's harder and doesn't machine well compared to softer grade steels like the 316L. The company specializes in the production of stainless steel plates, stainless steel tubes, stainless steel rods, and other stainless steel profiles. It is also known as ASTM 904L stainless steel strip. rates of ASTM 316L and Sandvik SAF 2507 respectively was performed in 80% acetic acid with 2000 ppm chloride ions at 90C (194F). 904L stainless steel price in India is Rs. Compare to SS304, 310 or 316L, SS904L contains high chromium, nickel and molybdenum. The authentic Omega Seamaster PloProf 600M was produced from a single block of 904L stainless steel. Austenitic vs Martensitic Steel . 904L Stainless Steel VS 316L, VS Duplex 904L stainless steel price is expensive, due to high amount of molybdenum and nickel content, that leads to grade 904L is replaced by low cost grades, such as 316L, 317L, 2205, 6Mo and super duplex grades. John Hone. 904L is an austenitic stainless steel. Which means it would cost around 8.97 Pounds. Only the 25% Nickel grades have similar CSCC resistance. The 316L Stainless steel is far less scratch resistant than the 904L because it has a much higher Rockwell hardness. There are many grades available in stainless steel, but let's take a quick look at some of the most commonly used . They are not hardened by heat treatment and are nonmagnetic. 316L, A lower cost alternative, but with much lower corrosion resistance. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. SS904L is a non-stabilized grade like SS316L. Consequently, a specified standard should always be stated when ordering. Initially, during the 1980s, 904L stainless steel was only used for the Rolex Sea-Dweller line of deep-sea diving watches and later the Submariner collection; however in 2003, Rolex switched all of its various lines of watches over to 904L stainless steel, due to the superior corrosion resistance that it offered. It has good activation-passivation transformation ability and excellent corrosion resistance. The 316L has less nickel in it and is far brighter in appearance and tends to stay that way. 904l grade stainless steel is a low-carbon variety of stainless steel with additives of nickel, chromium, copper, and molybdenum to make it highly resistant to corrosion caused by elements like sulfuric acid, sweat, moisture, salt water etc, and due Non-magnetic in nature. Project 70 316L * Project 7000 Stainless 316L * Speed-E-Mac 316L . 316/316L Stainless Steel - Molybdenum alloyed austenitic stainless. Solid 904L vs 316L Stainless Steel The 904L "Rolex Steel" is way harder than 316L steel and has better anti-corrosion properties too. The chemical composition of a steel grade may vary slightly between different national standards. STEEL GRADES High Alloyed Austenitic Stainless Steel 904L, 254 SMO, 654 SMO AvestaPolarit EN ASTM 904L 1.4539 N08904 254 SMO 1.4547 S31254 654 SMO 1.4652 S32654 A. 904L steel vs. 316L in watchmaking industry - Finishing.com A. Langley Alloys has supplied Ferralium 255 to numerous projects as a replacement to 904L. Influence of alloy additions to stainless steels on corrosion resistance. The SS 316L and 316F would have a very similar hardness around 82-84 HRB. Rolex calls 904L stainless-steel a "corrosion-resistant superalloy." 904L differs from 316L due to additional Chromium, Molybdenum, Nickel, and Copper that offers it improved resistance to . The 316L has less nickel in it and . Welding Due to its extra amounts of chromium, molybdenum, nickel and copper, 904L steel features superior resistance to corrosion, rust and acids. The grading system used to classify these two steel grades comes from a numbering system started by the American Iron and Steel Institute (AISI), one of the oldest trade unions that dates back to 1855. With watch brands like Ball starting to use 904L stainless steel, taking the bragging rights away from Rolex, we thought now is the perfect time to explore the differences between 316L and 904L - at least when it comes to watches.. 2009-Oct-6. At Bergsen Metals, we provide an inventory of stainless steel products, including 304/304L stainless steel, 316/316L stainless steel, and . Nickel: Monel Iconel Hastalloy C Acetic Acid (20%) 21 A A A A A A Acetic Acid (50%) 21 A A B A A A Acetic Acid (50%) Boiling C B B A B A . 1. The Pros and Cons of 304 vs 316 Stainless Steel. Stainless Steel 316,316L Stain. Key alloying elements (chromium, nickel, and molybdenum) are present in much higher proportions. Grade 904L stainless-steel is a non-stabilized austenitic stainless steel with low carbon content. 304, 316L, and 904L are austenitic steels. SS 904L Price per Pound in India. A. I'm curious what is your favorite Steel is and what would you choo. This compared to a corrosion rate of roughly 0.01 mm/year on super-duplex stainless steel. A non-stabilized austenitic stainless steel, 904L grade products contain copper as part of the alloy. 3 yr. ago. All About 316L VS 904L Stainless Steel in Watches What's the difference between 316L and 904L steel? We produce ASTM/ASME Grade 304, Grade 304L,304h, 316, 316L, 316H, 316TI, 321, 321H, 309S, 309H, 310S, 310H, 410S, 2205, 904L, 2507, . Sandmeyer Steel Company stocks Alloy 904L stainless steel plate in thicknesses from 3/16" through 2". Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. For 316L, weld metal Mo of about 2.5% matches the corrosion resistance of base metal of just over 2% Mo. The combination of high chromium and nickel content, coupled with additions of molybdenum and copper, assure good to excellent corrosion resistance. 904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. For maximum stress corrosion cracking This is thanks to its make-up of at least 10.5% of chromium, carbon, iron, and some other trace elements. All About 316L VS 904L Stainless Steel in Watches Alloy 904L Stainless Steel Plate All About 316L VS 904L Stainless Steel in Watches The . Grade 904L stainless steels are high purity steels with low sulphur content. Jan 14, 2021 It is not difficult to see that 904L alloy elements chromium, nickel, molybdenum is more than 1.6 times of 316L stainless steel, 1%-2% copper . With its highly alloyed chemistry 25% nickel and 4.5% molybdenum, 904L provides good chloride stress corrosion cracking resistance, pitting and general corrosion resistance superior to 316L and 317L molybdenum enhanced stainless steels. By contrast, Sty-pula3 found that uoride ions are adsorbed at the grain boundary edge in stainless steel, causing intergranular corro-sion, thus accelerating local corrosion. This high alloy chrome steel is added with copper to improve its . The industry standard stainless steel is 316L. VLX316U . The 316L Stainless steel is far less scratch resistant than the 904L because it has a much higher Rockwell hardness. The improvement in corrosion resistance moving from 304 to 316 is due to the addition of molybdenum. i was an engineer in the Oil business , 316 stainless will eventually rust or corrode from the acid from your skin, 904 L will never corrode or rust thats the difference ,904L is more expensive. It is also highly resistant to chloride attack - both pitting / crevice corrosion and stress corrosion cracking. 904L is an austenitic alloy designed for a middle to high level of corrosion resistance above the levels of 316 and 317 stainless. The 316L has less nickel in it and . Super duplex steels are lower cost and higher strength and will be the optimum choice for most projects. But the main issue with 904L, besides its extremely high price, is that it is still harder to process than 316L. Duplex or super duplex stainless steel alloys such as 904L, 2205, Alloy 255, 6Mo, S32760 provide better chloride resistance than 316L stainless steel. The two stainless steel grades used in flexible chimney liners, to give them their correct classification, are 316L and 904L. In the various atmospheres, stainless steel 904L grade offers moderate corrosion resistance between the standard austenitic 316L alloy and highly alloyed 6% molybdenum and equivalent to super austenitic alloy types. 316L stainless steel has better resistance to carbide precipitation than 316 stainless steel and it can be used in the above temperature range. Grade UNS N08904 stainless steel strip is a low-carbon, high-nickel, molybdenum super austenitic stainless steel strip. It is typically used in the chemical industry for severe corrosion environments i.e better resistance to pitting, SCC, IGC etc. Anyway, these SS 316L and 316F have enough hardness for the practical purposes into the watches manufacture. But over time, they learned that while 316L is corrosion resistant, salt water can . Type 904L contains more chromium, molybdenum and nickel then 316L, plus also some copper, manganese and silicon, which makes it more corrosion resistant than 316L. The SS 904L grade supplied by Oshwin Overseas adhere to all Domestic and . Stainless Steel 904L, UNS N08904, 1.4539 . Posted by Arthur Harris & filed under Company News.. The most common type of stainless steel that most watch companies use is 316L stainless steel. Stainless steel differs from regular steel as it doesn't oxidize (hence the name "stainless"). In most environments 904L has a corrosion performance intermediate between the standard austenitic grade 316L and the very highly alloyed 6% molybdenum and similar "super austenitic" grades. It has good corrosion resistance in non-oxidizing acids, good pitting corrosion . A Superaustenitic Stainless Steel Designed for Corrosion and Pitting Resistance in a Wide Range of Process Environments Alloy 904L 08/2014 www.SandmeyerSteel.com SANDMEYER STEEL COMPANY . 904L is a low-carbon, high alloy stainless steel, with additives of copper, chronium, nickel, and molybdenum. A 100% improvement on 2. Presence of higher magnitudes of nickel and molybdenum makes it better than other austenitic steels. Stainless Steel - basically carbon steel with added chromium to resist corrosion and other elements which increase performance levels but The 14C28N stainless steel from Swedish manufacturer Sandvik is considered an upgrade to their 13C26 described below. This grade does not require pre-heat and post-weld heat treatments. 3. Grade 904L electrodes and rods are used for welding grade 904L steels as defined in AS 1554.6. The key difference between Hastelloy and stainless steel is that Hastelloy shows an outstanding corrosion resistance compared to stainless steel.. It is used extensively in the chemical process industry including the production of phosphate . lm is formed on the stainless steel surface. 6. level 1. 904L is a new type of high-chromium nickel-molybdenum super austenitic stainless steel with excellent corrosion resis- While its unique hardness allows it to withstand extreme conditions, it also requires . Their Rockwell strength (HRB) is less than 95, and the strength is almost 490MPa. These steels contain 16 to 26 percent chromium and up to 35 percent nickel. Rolex has its very own foundry where they make their 904L steel. 321 321H Stainless Steel 347 347H Stainless Steel 904L N08094 Seamless Tubes 17-4 PH 630 UNS S17400 Stainless Steel 253MA S30815 Stainless Steel Tube S31254 254 SMO Pipe Subsequently, Rolex had to design its own tools to work with the material and utilizes a 250 ton press to stamp the initial cases. SS 904L does not require pre-heat and post-weld heat treatment. It does not indicate that this is the cost of 1.4539 Inox in countries like Europe, China, Singapore, Japan, USA, etc. In terms of matching international standards I am unsure as to why it would not. Stainless Steel 316L or called: 316L SCQ . Further additions of molybdenum and copper in the 1.4539, (904L), grade extend the corrosion resistance in these reducing acid conditions. In addition, it also produces various alloy plates. Stress Corrosion Cracking Corrosion Type 304 stainless steel can handle mild foods and vegetables, but sauces and pickle liquors are more corrosive and can even cause pitting corrosion on type 316 stainless steel. Type 904L is a high alloy austenitic stainless steel that is known for its corrosion properties. Welding Welding of grade 904L stainless steels can be performed using all conventional methods. The steel acquires an exceptional sheen when polished, different from 316L. These properties make them relatively resistant to corrosion. This allows them to . Nickel can be an irritant to some. This is because Inconel is stronger than stainless steel at high temperatures, while being more resistant to oxidation and scaling as well. 316 LN TANKER Transportation of H2SO4 Tank rinsed with Sea Water ! Stronger corrosion properties than Type 316L an 317L. 904L stainless steel is harder and does not machine well than other steels used in watches. In this video, I compared my experience with 904L stainless steel to 316L stainless steel. Alloy 904L (UNS N08904) is a superaustenitic stainless steel designed for corrosion and pitting resistance in a wide range of process environments. In short, the winner is the SS of gen Rolex 904L with a hardness of approximately 90 HRB. 316L is often substituted for 316 stainless due to its superior weldability with no appreciable difference in price or properties. The main materials of the company's products are TP304/304L, TP316/316L, TP321, 310S, 904L, S31803, 2520Si2, Monel400, etc. Minimum PREN of 40. . Technically stainless steel is an alloy of steel that is an alloy of iron and carbon, with a few other trace elements. In comparison to 316L, its molybdenum addition gives it superior resistance to localized attack (pitting and crevice corrosion) by chlorides and greater resistance reducing acids and in particular its copper addition gives it useful corrosion resistance to all concentrations of . The main difference between 316 and 316L stainless steel is the level of carbon content, weldability, corrosion resistance and mechanical properties. It has good corrosion resistance in non-oxidizing acids, good pitting corrosion resistance in neutral chloride-containing application. Therefore, 904L is more likely to withstand the corrosive power of seawater. Although subsequent annealing isn't required typically, it should be carried out when the fabrication is carried out beneath extreme stress corrosion cracking situations. The high cost of this grade of stainless steel, however, has caused many manufacturers to turn to the lower-cost duplex stainless steel 2205 as an alternative. The use of an alternative alloy for the traps would not reduce any potential future or long term problems with other parts of the 316L drainage . The L is important as 316 and 316L for example, have different chemical compositions and physical characteristics . Good forming and welding properties. It has good activation-passivation transformation ability and excellent corrosion resistance. Like plain steel, the term stainless steel can be applied to a wide variety of different alloys. Additionally, though the melting point of this particular type of Inconel is lower than that of 304 stainless steel, it has a higher operating temperature limit. While 316 has a maximum carbon content of 0.08%, 316L has a maximum carbon content of only 0.03%. In summary, 904L stainless steel vs duplex stainless steel is an interesting comparison. The low carbon content of 904L improves its welding characteristics. GENERAL PROPERTIES Alloy 904L (UNS N08904) is a super austenitic stainless steel that is designed for moderate to high corrosion resistance in a wide range of process environments. In reviewing the differences between 316L stainless steel and 904L stainless steel, let me make four key observations: Impurity components (silicon, phosphorus, and sulfur) have been reduced below 316L stainless steel. Annealing: The recommended annealing temperatures for 904L wrought steel is 1095 C (2000 F). SS316 has a 0.08% max carbon content while SS316L (UNS S31603) only has a maximum 0.03% carbon content. SS904L stainless steel is an austenitic stainless steel material used for high corrosion resistance applications in oil & gas, power plants, fertilizers plants and chemical plants. The fact that Rolex places great emphasis on high-quality and practical materials in its timepieces is also demonstrated by the Rolex-owned steel alloy type 904L, known as Oystersteel. The chromium, molybdenum and nickel contents of 904L provide a better chloride pitting corrosion resistance than that of 316 stainless in many environments. 316L is considered a tougher, harder, "marine grade" metal, however it doesn't have luster and acid resistance of Rolex's 904L chrome steel. 904 vs. 316: Steel Hardness Good resistance to sulphuric, phosphoric and acetic acids. Stainless Steel 904L welding can be conducted using all conventional techniques. here is what is said about the difference - rolex calls 904l stainless steel a "corrosion-resistant superalloy." 904l differs from316l because of extra chromium, molybdenum, nickel, and copper which gives it improved resistance to acids. As a result, this grade of steel can resist corrosion from many acids. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. 316L stainless steel is an alloy of iron that is known as high-grade steel or marine grade stainless steel.
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