where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

685 views
Technical Discussions
Fred Raco, Jr.
Consultant, Partner in NDT Laboratory
RNDT, Inc., USA, Joined Jul 2002, 24

Fred Raco, Jr.

Consultant, Partner in NDT Laboratory
RNDT, Inc.,
USA,
Joined Jul 2002
24
05:06 Apr-22-2005
super austenitic plate material

Can anyone assist us on a way of measuring the residual magnetism (if any) on a super austenitic plate material after welding?


    
 
 
DJ Kallhof
DJ Kallhof
01:26 Apr-22-2005
Re: super austenitic plate material
Austenitic stainless steels unlike Martensitic don't typically have residual magnetism problems. To verify this I would suggest using a Hall Effect Probe. Just out of curiousity, what is the AMS number of the material you are dealing with?
----------- Start Original Message -----------
: Can anyone assist us on a way of measuring the residual magnetism (if any) on a super austenitic plate material after welding?
------------ End Original Message ------------




    
 
 
Jim Knowles
Jim Knowles
02:54 Apr-28-2005
Re: super austenitic plate material
Austenitics do suffer from a magnetic effect especially after a weld repair, its called retained Delta ferrite.
Too higher delta ferrite can impair the corrosion properties of the stainless material. The delta ferrite levels usually found after welding to an approved weld procedure can be between 3-6% Fe, on repairs to a repair or un authorised re running of weld cap profiles levels of Fe can rise to around 10-12%.
Equipmemt used to measure accurately is the Forster Mangnetoscop 1.068 model.


----- Start Original Message -----------
: Austenitic stainless steels unlike Martensitic don't typically have residual magnetism problems. To verify this I would suggest using a Hall Effect Probe. Just out of curiousity, what is the AMS number of the material you are dealing with?
: : Can anyone assist us on a way of measuring the residual magnetism (if any) on a super austenitic plate material after welding?
------------ End Original Message ------------




    
 
 

Product Spotlight

FlexoFORM™

The FlexoFORM™ solution integrates flexible phased array probe technology in a scanner to solv
...
e the challenges that come with inspecting pipe elbows. When combined with a water column, this solution can be used to collect easy-to-interpret data on elbows with diameters ranging from 4.5 in. OD up to flat and offers many benefits.
>

Wireless TOFD scanner

Quick, accurate and highly reproducible welds testing. The System operates wirelessly and is compat
...
ible with any type of Windows based Laptop, Desktop or Tablet.
>

Compact NDT inspection-heads for measurements with active thermography

The compact inspection head is suitable for thermographic ndt tasks. The uncooled infrared camera
...
is specially developed for NDI-tasks and offers a thermal sensitivity until now known only from thermal imagers with cooled detector. All required components and functions are integrated into the inspection-head. You will only need an ethernet cable to connect the sensor with the evaluation system.
>

Mentor UT – Ultrasonic Phased Array Flaw Detector

With Mentor UT, you get an accessible and efficient inspection experience. Create user-defined menus
...
and workflows (“apps”) with GE’s desktop software Mentor Create to ensure consistency, even for the most complex inspections, every time. Mentor UT is the first UT device to easily allow wireless connectivity and live streaming, so you get second opinions when you need them most—in real-time.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window