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25 May 2018, 10:53 PM | #1 |
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What is a pro/con between stainless steel type 316L and 904L
For a normal everyday user.
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25 May 2018, 10:57 PM | #2 |
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For an everyday user I see no pros or cons.
I do see an issue with the higher nickel content of 904L. If you have a nickel allergy.
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26 May 2018, 05:24 AM | #3 |
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I talked to a corrosion specialist about this, 904L actually sheds less nickel than 316L in a sweat/salt water environment despite having a higher nickel content. So if you are worried about that you should go with 904L.
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26 May 2018, 09:54 AM | #4 |
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26 May 2018, 01:51 PM | #5 |
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26 May 2018, 04:02 PM | #6 | |
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Quote:
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28 May 2018, 05:16 AM | #7 |
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I have never had an allergy to any 316 watch, I can't wear a 904l watch for more than 24 hours without irritation. So I have to respectfully disagree with the assertion that 904l is less irritating than 316.
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3 September 2018, 08:28 PM | #8 |
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904-L is soft so the case can get dented that’s a con and the price you pay for it being resistant to stains
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3 September 2018, 08:38 PM | #9 |
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15 October 2018, 02:01 PM | #10 |
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16 October 2018, 10:40 AM | #11 |
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16 October 2018, 01:57 PM | #12 |
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Quite so. Thanks 037.
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16 October 2018, 04:56 PM | #13 | |
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Well it's probably worth as much hype as is given for it being better than 316L. So it a counter argument for both sides. Sent from my iPhone using Tapatalk Pro |
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17 October 2018, 12:04 AM | #14 | |
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Tensile strength doesn’t necessarily give the complete story as to the “hard vs. soft” of the two alloys. Many scales can be used, but for this instance, let’s use the Brinell. ) 316L has a Brinell hardness of 146 ) 904L has a Brunel hardness of 122 This dispels the internet hype that 904L is harder therefore more scratch resistant. Better corrosive properties, but not harder.
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3 September 2018, 09:11 PM | #15 |
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Does it matter? You don't exactly have choice. If you want the watch you take the 904L.
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15 October 2018, 01:35 PM | #16 |
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A few years ago, I got poison ivy on my wrist in two spots. Since then when I wear my SeaDweller, after a few days, I will start to have a rash exactly where the poison ivy was. My remedy was I to switch out all the links out for aftermarket 316 links. I kept my oringnal clasp as that isn’t an area that is affected, and now I can wear the watch 24/7 for months with no problem.
Poison Ivy can cause a nickel sensitivity. I haven’t found anything on the net to prove this, but would love to hear from a dermatologist what they think. I doubt it’s ever been documented as it’s an obscure watch nerd topic. |
15 October 2018, 02:40 PM | #17 |
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What is a pro/con between stainless steel type 316L and 904L
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16 October 2018, 05:30 AM | #18 |
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Here is some info from the Wiki free encyclopedia on 904L Stainless Steel:
(BTW: Sharing is permitted per their rules of usage) SAE 904L stainless steel From Wikipedia, the free encyclopedia 904L is an austenitic stainless steel (*). 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 sulphuric acid. Its high alloying content also gives it greater resistance to chloride stress corrosion cracking, but it is still susceptible. Its low carbon content makes it resistant to sensitization by welding and which prevents intergranular corrosion. It has applications in piping systems, pollution control equipment, heat exchangers, and bleaching systems. In 1985 Rolex became the first wristwatch manufacturer to utilize 904L grade steel in its watches. Rolex chose to use this variety of steel because it takes a higher polish than other grades of steel and provides greater corrosion resistance, though it does not machine as well and requires specialized equipment to be properly modified into the required shapes. Composition • Nickel, 23–28% • Chromium, 19–23% • Carbon, 0.02% maximum • Copper, 1–2% • Molybdenum, 4–5% • Manganese, 2% maximum • Silicon, 1.0% maximum • Iron, (balance) Other names • UNS N08904 • DIN 1.4539 • SUS 904L • SS2562 (*) Austenitic stainless steel From Wikipedia, the free encyclopedia Austenitic stainless steel is a specific type of stainless steel alloy. Stainless steels may be classified by their crystalline structure into four main types: austenitic, ferritic, martensitic and duplex. These stainless steels possess austenite as their primary crystalline structure (face centered cubic). This austenite crystalline structure is achieved by sufficient additions of the austenite stabilizing elements nickel, manganese and nitrogen. Due to their crystalline structure austenitic steels are not hardenable by heat treatment and are essentially non-magnetic. There are two subgroups of austenitic stainless steel. 300 series stainless steels achieve their austenitic structure primarily by a nickel addition while 200 series stainless steels substitute manganese and nitrogen for nickel, though there is still a small nickel content. 300 series stainless steels are the larger subgroup. The most common austenitic stainless steel and most common of all stainless steel is Type 304, also known as 18/8 or A2. Type 304 is extensively used in such items as, cookware, cutlery, and kitchen equipment. Type 316 is the next most common austenitic stainless steel. Some 300 series, such as Type 316, also contain some molybdenum to promote resistance to acids and increase resistance to localized attack (e.g. pitting and crevice corrosion). The higher nitrogen addition in 200 series gives them higher mechanical strength than 300 series.
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16 October 2018, 07:32 AM | #19 |
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One “pro” for 316 SS is there are no lines or lists to buy those brands.
One “con” for 904 SS is the long wait list for sports models Rolex makes in the metal. Sent from my iPhone using Tapatalk Pro
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