Stainless Steel

Bill 101

If there are magnetic and non-magnetic stainless steels,( Martensitic, Ferritic & Austenitic) because of their different physical properties, then what are the trade-offs ’?

For example: Being magnetic is it less durable in resisting rust, scratches ext.) ?
Can you mill or roll one in to shapes easer then the other?
What would be an example of use in a finished product for each?

mgb_phys

Start here http://en.wikipedia.org/wiki/Stainle...tainless_steel ?

Bill 101

mgb,
If your knowledge base is limited to irony and you find the questions to difficult, then don’t reply with such an ignorant answer.

Astronuc

mgb_phys pointed to an article that states the differences between austenitic, ferritic and martensitic stainless steels. Composition and microstructure, which is related to composition and thermomechanical treatment, determine the properties such as corrosion resistance, strength, toughness and ferro-magnetism or magnetization.

Furthermore, the article mentions other forms - Precipitation-hardening martensitic stainless steels, which "have corrosion resistance comparable to austenitic varieties, but can be precipitation hardened to even higher strengths than the other martensitic grades," and duplex stainless steels, "which have a mixed microstructure of austenite and ferrite" and "have improved strength over austenitic stainless steels and also improved resistance to localised corrosion, particularly pitting, crevice corrosion and stress corrosion cracking."

One could even clad a one type of steel, e.g., martensitic steel, with an another kind, e.g., austenitic steel (an example of apply a corrosion resistant (protective) layer to a mechanical substrate). However, one must then devise subsequent processes, such as welding with that in mind.

mgb_phys

It wasn't an ignorant answer, theres not much point in re-typing an intro to the different types of stainless when wiki does a good job.
Once you know which class of ss you need we can narrow down which exact alloy is best

spacester

Bill 101:

The folks here are polite.

You are not.

You owe them an apology.

Thank you.

mgb_phys

Generally we aren't, but we are normally helpful when it comes to technical answers

mugaliens

Agreed. You pointed to a 2,110 word article containg not only the answer to his question, but ancilliary material, as well.

In its earlier years, Wikipedia got a bad rep, but it's content these days is quite remarkable.

Let's get back to the OP's question regarding tradeoffs between "magnetic and non-magnetic stainless steels, (Martensitic, Ferritic & Austenitic)."

MalliCk

trade offs

yup they exihibit superficial properties relevant to others

say,Austenite SS is oftenly used as a biomaterial,commonly in joints(hip joint etc.),valves and may be more.

Salish99

Since electronic structure is related to magnetism, conductivity, and oxidation (exchange of electrons) they are all related.
I recommend you to read Per Kofstad's "High temperature Corrosion", and see if you still have some questions afterward.