Comparing Properties of Magnetic & Non-Magnetic Stainless Steel

In summary, the different types of stainless steel have different physical properties that come with trade-offs. For example, magnetic stainless steel is less durable in resisting rust, scratches, and other forms of damage. Austenitic stainless steel can be precipitation hardened to even higher strengths, but it also has inferior corrosion resistance. Duplex stainless steel has a mixed microstructure of austenite and ferrite, which makes it stronger and resistant to localised corrosion.
  • #1
Bill 101
2
0
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 into shapes easer then the other?
What would be an example of use in a finished product for each?
 
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  • #3
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.
 
  • #4
Bill 101 said:
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.
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.
 
  • #5
Bill 101 said:
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.
It wasn't an ignorant answer, there's 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
 
  • #6
Bill 101 said:
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.

Bill 101:

The folks here are polite.

You are not.

You owe them an apology.

Thank you.
 
  • #7
spacester said:
The folks here are polite.
Generally we aren't, but we are normally helpful when it comes to technical answers :smile:
 
  • #8
mgb_phys said:
It wasn't an ignorant answer, there's 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

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)."
 
  • #9
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.
 
  • #10
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.
 

1. What is the difference between magnetic and non-magnetic stainless steel?

Magnetic stainless steel contains iron, which makes it attracted to magnets and able to hold a magnetic charge. Non-magnetic stainless steel does not contain iron and is not attracted to magnets.

2. How do I determine if a stainless steel material is magnetic or non-magnetic?

You can use a magnet to test the material. If the magnet is attracted to the material, it is magnetic stainless steel. If the magnet does not stick, it is non-magnetic stainless steel.

3. What are the benefits of using magnetic stainless steel?

Magnetic stainless steel is commonly used in applications where magnets are necessary, such as in motors, generators, and magnetic storage devices. It is also more easily formed and welded compared to non-magnetic stainless steel.

4. Can the properties of magnetic and non-magnetic stainless steel be altered?

Yes, the properties of stainless steel can be altered through various methods such as heat treatment, cold working, and alloying. These processes can change the magnetic properties of the material.

5. Is one type of stainless steel better than the other?

There is no clear answer to this question as it depends on the specific application and requirements. Magnetic stainless steel may be preferred for certain applications, while non-magnetic stainless steel may be better suited for others. It is important to consider the properties and characteristics of each type before selecting the appropriate one for a project.

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