Comparation between SS 301, 303, 304, 310, 316, and 316l

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I THINK THIS WON'T ANSWER MY QUESTION..IS THERE ANY SUGGESTIONS?

Each of the SS that you mention is the best steel for certain applications. There is no "one best SS" that will suit all applications.

Steel suppliers have the data available that you asked for. ASTM also does. sites such as global spec or macmaster.com also have some info.

Are you after general knowledge? or do you have a specific project?

I have project of low costing. My company usually use SS304. Then we have several choice like my title so where is the best from its mechanical properties, and the advantages of each then i will compare it. i confused. anti-corrosion, best mechanical properties, and low cost. can i have some clue here?

316 and 316L are low-carbon, and usually found in pipework and fittings. 304 is more commonly suited to sheet materials, angle, bar-stock, etc..

The Forum would benefit from some details of the project and processes to be employed in order to offer the best advice. It could be that steels are not the best materials for corrosion resistance; plastics might be a better choice in some cases.

You may add 202, if you are looking for low cost first.

I worked for years with 3xx stainless steels and found that you must be able to list all your requirements (including manufacturing processes to be used) together with a weighted value of each requirement. And, you have to be pretty specific; you can't just say corrosion resistant, but resistant against what?

Can you give us a lot more details?

that i want to change SS304 with the other but i have small data to convince my opinion. the manufacturing is just welding cut and use in high temperature condition in tower of high voltage (fitting). the corrosion of course to weather of rain and tropical. can u give another suggestion the cheap than SS304 but have best performance maybe in chemical composition, mechanical props, and its advantage?

BooBoo,

When I said "specific", I meant specific. For example, when you say high temperature, what temperature is that? 130°C is nothing; 730°C might be a real problem. What is the part? How much stress does it see? And, so on.

To be fair, your question is too general in nature. Call up the labs at U.S. Steel and ask them, they make the metal. Compatibility charts are available from almost any steel, rubber, sealing materials manufacturer. There are too many good coatings on the market that are making it a moot point about the properties of the parent metal. It all comes back to making the application. How are you going to use it, what ambient conditions will effect it? What is the material that would cause the corrosion?

In the world market, the best steel to use is a joke. Cost becomes the major factor. If you decide to use 316, the next question should be: Where is it going to be made?

The best steel out there is still made in the US. If you doubt that, try machining it. Cut a cross section and put it under the scope. Me, I put the steel on a lathe, and let the lathe talk to me. Because of that approach, I don't have premature failures.

Thanks to all, I have a clue.