"mechanical property" can literally mean hundreds of different things. You really need to be more descriptive. Yourself being a quality engineer, I would think you could help us help you by being as detailed as possible. 
I have to test SS410 bar which has undergone " Hardened and tempered(T)" heat treatment for impact testing.
Bar dimensions - dia. 100mm, length - 600 mm.
Chemical composition :
Carbon 0.12
Silicon 0.45
Manganese 0.85
Chromium 12.01
Phosphorous 0.008
Sulphur 0.0056
hardness 170 BHN
The bar is failing in impact test at 0 deg. celcius.Avg. required impact test value is 27 J.
Can anybody guide me , if there is any correlation between chemical composition and mechanical properties.So that with prior guess I can avoid failure and educate the vendor.
Bar dimensions - dia. 100mm, length - 600 mm.
Chemical composition :
Carbon 0.12
Silicon 0.45
Manganese 0.85
Chromium 12.01
Phosphorous 0.008
Sulphur 0.0056
hardness 170 BHN
The bar is failing in impact test at 0 deg. celcius.Avg. required impact test value is 27 J.
Can anybody guide me , if there is any correlation between chemical composition and mechanical properties.So that with prior guess I can avoid failure and educate the vendor.
You need to work with your heat treater, they can review their process and adjust, were they aware of these requirements, if they were, they should have tested this. A good relationship with them will be rewarding.
- Arclight Ironworks
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Workhorse
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Posts:
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Joined:Tue Apr 11, 2017 10:31 pm
@ Shastri11 - start by reviewing this tech sheet on Martensitic 410 Stainless.
Your purported through-hardness value of 170 BHN is below the avg for 410SS, most likely owing to your reduced (from 0.15%) Carbon content of 0.12%. Typical avg values achieved for hardened/tempered 410SS are 200 BHN (38-40 RC).
Also, 410SS is not well suited for "tough" applications near zero and sub-zero.
What were the resultant impact energies achieved with your tested 410SS?
Your purported through-hardness value of 170 BHN is below the avg for 410SS, most likely owing to your reduced (from 0.15%) Carbon content of 0.12%. Typical avg values achieved for hardened/tempered 410SS are 200 BHN (38-40 RC).
Also, 410SS is not well suited for "tough" applications near zero and sub-zero.
What were the resultant impact energies achieved with your tested 410SS?
Purpose, then passion. Practitionership. Obsession and hard work. That's the discipline.
As such it is my clients requirement to test the material at 0 deg celsius with average energy value required more than 27 J. Finally there would be no option for me to do R&D for different compositions and heat treatment to get optimum results for impact test and other mechanical properties.Arclight Ironworks wrote:@ Shastri11 - start by reviewing this tech sheet on Martensitic 410 Stainless.
Your purported through-hardness value of 170 BHN is below the avg for 410SS, most likely owing to your reduced (from 0.15%) Carbon content of 0.12%. Typical avg values achieved for hardened/tempered 410SS are 200 BHN (38-40 RC).
Also, 410SS is not well suited for "tough" applications near zero and sub-zero.
What were the resultant impact energies achieved with your tested 410SS?
The above link you suggested I already referred it.
Any article or research paper would be quite helpful?
The resultant values for impact test were 16J,18J & 32J.
- Otto Nobedder
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Weldmonger
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Posts:
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Joined:Thu Jan 06, 2011 11:40 pm
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Location:Near New Orleans
Shastri11, are you on LinkedIn? There's a group there sponsored by Sandvic that I participate in. It gives me access to some of the top metallurgists and welding engineers in the world.
It's called Welding and Materials, and here's a direct link.
https://www.linkedin.com/groups/8477919
Steve
It's called Welding and Materials, and here's a direct link.
https://www.linkedin.com/groups/8477919
Steve