904l steel vs 316l
Nov 06, 2020 · 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. But the main issue with 904L, besides its extremely high price, is that it is still harder to process than 316L.
Jun 12, 2009 · Hi Guys I was wondering if some our rwg members knows about this :is there any difference between 904L steel that rolex uses compared to the rep 316L steel? I mean is there a big difference between the look/weight of the two types of steels? will you be able to Austenitic Stainless Steel Grades Comparison Chart Austenitic Stainless Steel Grades Comparison Chart. The table is intended to relate former BS, EN, German and Swedish grade designations to the current EN steel numbers, AISI grades and UNS numbers. The table is based on the 'wrought' ie long products (stainless steel bars etc), flat products (stainless steel plates etc) steel numbers published in EN 10088 and related standards.
Jun 09, 2021 · And while Rolex didnt invent 904L-grade steel, the brand has since perfected the process for watchmaking purposes, resulting in a superior metal finish that is simply unmatched by the industry-standard 316L stainless steel. New BALL Roadmaster Icebreaker Disrupting Rolex 904L The truth is that 904L steel is no more proprietary to Rolex than 316L steel is to all the other watch brands. The 904L Disadvantage. One of the differences between 904L and the ubiquitous 316L steel is that the 904L alloy contains more nickel content. This aids the metal in being more corrosion resistant, in salt water conditions for example.
Solid 904L vs 316L Stainless Steel The 904L Rolex Steel is way harder than 316L steel and has better anti-corrosion properties too. Only Swiss based watch factories are using 904L steel because its harder and doesnt machine well compared to softer grade steels like the 316L. Specification Sheet:Alloy 904L - Sandmeyer SteelSteel Grade Corrosion Rate, mm/year 316L > 6 904L 0.47 254 ®SMO 0.27 654 SMO® 0.06 Steel Grade Corrosion Rate, mm/year 316L > 5 904L 1.2 254 SMO® 0.05 Steel Grade Corrosion Rate, mm/year 316L 0.88 317LMN 0.29 904L 0.06 254 SMO® 0.01
rates of ASTM 316L and Sandvik SAF 2507 respectively was performed in 80% acetic acid with 2000 ppm chloride ions at 90C (194F). The results showed that ASTM 316L has a corrosion rate of up to 1 mm/year in such conditions. This compared to a corrosion rate of roughly 0.01 mm/year on super-duplex stainless steel. A 100% improvement on Sustainability Of SS 904L VS SS 316Alloy 904L (UNS N08904) is a superaustenitic stainless steel that is designed for moderate to high corrosion resistance in a wide range of process environments. 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.
The Ultra range includes our key products Ultra Alloy 825 (EN 2.4858), Ultra 904L (EN 1.4539) and Ultra 254 SMO (EN 1.4547) as well as several alternatives, for example Ultra 654 SMO (EN 1.4652) , the most corrosion-resistant stainless steel in the world, for your most specific applications. The Ultra range is the best choice when you need What Type of Steel Does Tudor Use? 904l Steel? - Millenary Furthermore, 904L steel can hold a polish really well, and the steel has a different luster than 316L. The 904L has extra Chromium, Molybdenum, Nickel, and Copper added which gives it improved resistance to acids. 316L steel is tougher and harder, but it does not have the same anti-corrosion characteristics, which of course was the biggest
904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. It is also highly resistant to chloride attack - both pitting / crevice corrosion and stress corrosion cracking. What is the Difference Between 904L and 316L Stainless Steel?Apr 26, 2016 · The polish and the resistance to scratching are the selling points that Rolex uses to promote 904L stainless steel alloy that they manufacture in-house. Although the process is more rigorous and expensive, the watchmaker insists that it is superior to 316L. Some claim that higher amounts of nickel in 904L steel could lead to allergies on contact, but anyone with a nickel allergy would have a similar reaction when coming into contact with 316L
May 27, 2019 · Chemical differences between 304L and 316L stainless steel:From a chemical point of view, 304 stainless steel contains 18% chromium and 8% nickel while 316 stainless steel contains 16% chromium, 10% nickel and 2% molybdenum. The molybdenum is added to help resist corrosion. Common applications of 304L stainless steel:All About 316L VS 904L Stainless Steel in Watches As you can see, the biggest difference when it comes to using 316L/904L for steel case and bracelet material in watches, is that 904L has a higher percentage of nickel and chromium, as well as the addition of copper. 904L also has an advantage when it comes to corrosion resistance, thanks to the copper and extra molybdenum: