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Technical Discussions
01:26 Aug-04-2000
about austenitic steel ndt

where can I get some information about austenitic steel NDT, especially on electric generator, whose material is 50Mn18Cr4WN(18MnCr4)?
thank you for your help.

07:49 Aug-05-2000
Re: about austenitic steel ndt
Dear A.Delahaza
We have over 30 years experience in the examination of austenitic steel
welds . Special longitudinal angled probe have to be used to penetrate the
austenitc colonnar structure . Actually we are in Korea to train people for
the examination pressure vessels with heavy thicknesses .At the 15 World
Conference on NDT we will present a paper on this subject .
Send me you fax number , will send you material .
I&T NARDONI INSTITUTE nardoni @numerica.it Brescia Italy fax
0039 -030-2667429 .
Handy phone :

best regards


: where can I get some information about austenitic steel NDT, especially on electric generator, whose material is 50Mn18Cr4WN(18MnCr4)?
: thank you for your help.

Thomas Murphy
NDT Inspector
USA, Joined Jul 2000, 16

Thomas Murphy

NDT Inspector
Joined Jul 2000
07:31 Aug-07-2000
Re: about austenitic steel ndt
EPRI (Electrical Power Research Institute)
In Charlotte, South Carolina, USA has published an
exhaustive recomendation manual for this exact
application. The retaining rings are difficult to
inspect. Inspection methods are similar to those
employed during inspection of austentic piping
but are different enough that specialized training
would be recommended for a new inspector. The EPRI
report lists both the inspection possibilities (UT,
ET, PT, VT) as well as the advantages and disadvantages
of each. It also touches on the fracture mechanics,
flaw types, and methods of repair. The report number
is EPRI EL/EM-5117-SR it can also be accessed by the
topics of retaining rings, stress corrosion cracking,
nondestructive testing and in-service inspection.


: where can I get some information about austenitic steel NDT, especially on electric generator, whose material is 50Mn18Cr4WN(18MnCr4)?
: thank you for your help.


Product Spotlight

Extended Range Variable Wall® Piping Calibration Blocks for Longseam Inspection

This set of two blocks has been specially designed for situations where ultrasonic examination tak
es place circumferentially or “around the curve” for applications such as inspection of longseam welds in piping and vessels. Jointly designed by PH Tool and Holloway NDT, the blocks feature side-drilled hole reflectors positioned within novel compound-curves, each with multiple thickness steps. The unique design results in a light and compact form factor, with the largest block weighing just over 15 lbs and spanning just 16 ¾”. Coverage is provided for nominal pipe sizes from 6” to 10” in the small block and 12” to a whopping 56” in the large block. The compound OD curves and multiple wall thicknesses actually exceed ASME requirements, providing exceptional signal response and measurement accuracy. Properly managing beam divergence off the ID and stabilizing beam skew due to probe rocking is essential to maintaining a consistent calibration when inspecting lengthwise on curved surfaces.

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.


Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr
oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are:
  • Beautiful Image! Easier to understand what you're looking at
  • Completely focused in entire image or volume
  • Much easier to define setups before inspection
  • Easier to decipher geometry echoes from real defects
  • Oriented defects (e.g. cracks) are imaged better
  • See image from different wave modes from one FMC inspection
  • FMC data can be reprocessed/analyzed without going back to the field


Teledyne ICM’s CPSERIES has been designed with a view to revolutionizing the handling and perfor
mances of portable X-Ray sets. Despite having managed to halve the weight of similar portable X-Ray generators available on the market (while continuing to provide the same power output), the SITEX CPSERIES generators feature a shutter, a laser pointer, a beryllium window, an aluminum filter and two integrated diaphragms (customized sizes are available upon request). Without compromising the robustness and reliability for which ICM products are renowned, the small size and light weight of the SITEX CPSERIES will radically change the way that you perform your RT inspections. And you will see a positive impact in terms of both quality and return on investment (ROI).

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