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- since 1996 -

Materials Research Institute
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Technical Discussions
Dave Utrata
Dave Utrata
08:54 Nov-08-2002
inclusions in SS coil

Hello,
I've been looking for a method that can detect inclusions in stainless steel coil. The coil will have a thickness of about 0.188 inches. I'd assume that an electromagnetic test has been used in this application, but have found no evidence of such.
I'd appreciate any help or direction to alternative inspections.

thanks,
Dave



    
 
 
Sean Franklin
Sean Franklin
09:53 Nov-08-2002
Re: inclusions in SS coil
Dave,

The use of Resistivity as a NDT method for detecting small inclusions in st. stl. can be used. The theory of resistivity involves the ways that materials conduct or resist the flow of electricity and plays an important role in the study of metals.

Every metal alloy has its unique level and characteristics of electrical resistivity. Within the same alloy specimen, resistivity varies with the composition of the material and internal structure and/or defects.

NDT Automation's (A division of Physical Acoustics Corporation) M100A Resistivity Metal Inspector provides rapid and accurate measurements of electrical resistivity. It's portable, durable, efficient and economical, and very simple to use.

For further information or if you wish to send us a sample for testing, feel free to contact Sean Franklin at 609-716-4088 or SFranklin@NDTAutomation.com

: Hello,
: I've been looking for a method that can detect inclusions in stainless steel coil. The coil will have a thickness of about 0.188 inches. I'd assume that an electromagnetic test has been used in this application, but have found no evidence of such.
: I'd appreciate any help or direction to alternative inspections.
.
: thanks,
: Dave
.



    
 
 
S.V.Swamy
Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex , India, Joined Feb 2001, 785

S.V.Swamy

Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex ,
India,
Joined Feb 2001
785
08:22 Nov-10-2002
Re: inclusions in SS coil
Hello, could you please tell us a little more about the type of stainless steel and the size of the inclusions that are to be detected. Electromagnetic Methods do appear to be the best bet, but we need more information. By the way UT has been used for detection of inclusions in steels!

S.V.Swamy,
ASNT Level III (RT, UT)

: Dave,
.
: The use of Resistivity as a NDT method for detecting small inclusions in st. stl. can be used. The theory of resistivity involves the ways that materials conduct or resist the flow of electricity and plays an important role in the study of metals.
.
: Every metal alloy has its unique level and characteristics of electrical resistivity. Within the same alloy specimen, resistivity varies with the composition of the material and internal structure and/or defects.
.
: NDT Automation's (A division of Physical Acoustics Corporation) M100A Resistivity Metal Inspector provides rapid and accurate measurements of electrical resistivity. It's portable, durable, efficient and economical, and very simple to use.
.
: For further information or if you wish to send us a sample for testing, feel free to contact Sean Franklin at 609-716-4088 or SFranklin@NDTAutomation.com
:
.
: : Hello,
: : I've been looking for a method that can detect inclusions in stainless steel coil. The coil will have a thickness of about 0.188 inches. I'd assume that an electromagnetic test has been used in this application, but have found no evidence of such.
: : I'd appreciate any help or direction to alternative inspections.
: .
: : thanks,
: : Dave
: .
.



    
 
 

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