Exporter of QQI Shims SAE AS5371 For Magnetic Particle Inspection
Exporters of QQI Shim SAE AS 5371 For Magnetic Particle Inspection
Exporter of SAE AS5371 Pure Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Pure-Iron Shim, Foil, Strip, Coil
Exporter of SAE AS5371 Pure Magnetic Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Pure Magnetic-Iron Shim, Foil, Strip, Coil
Exporter of SAE AS5371 Soft Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Soft-Iron Shim, Foil, Strip, Coil
Exporter of SAE AS5371 Soft Magnetic Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Soft Magnetic-Iron Shim, Foil, Strip, Coil
Exporter of SAE AS5371 ElectroMagnetic Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Electro-Magnetic-Iron Shim, Foil, Strip, Coil
Exporter of SAE AS5371 Magnetic Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Magnetic-Iron Shim, Foil, Strip, Coil
Exporter of SAE AS5371 Electric Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Electric-Iron Shim, Foil, Strip, Coil
Exporter of SAE AS5371 Electrical Iron Shims, Foils, Strips, Coils
Exporters of SAE AS-5371 Electrical-Iron Shim, Foil, Strip, Coil
Exporter of AS5371 CX-230 Thickness 0.002″ Shims, Foils, Strips, Coils
Exporters of AS 5371 CX 230 Thickness 0.002″ Shim, Foil, Strip, Coil
Exporter of AS5371 CX-430 Thickness 0.004″ Shims, Foils, Strips, Coils
Exporters of AS 5371 CX 430 Thickness 0.004″ Shim, Foil, Strip, Coil
Exporter of AS5371 CX4-230 Thickness 0.002″ Shims, Foils, Strips, Coils
Exporters of AS 5371 CX4 230 Thickness 0.002″ Shim, Foil, Strip, Coil
Exporter of AS5371 CX4-430 Thickness 0.004″ Shims, Foils, Strips, Coils
Exporters of AS 5371 CX4 430 Thickness 0.004″ Shim, Foil, Strip, Coil
Exporter of AS5371 3C2-234 Thickness 0.002″ Shims, Foils, Strips, Coils
Exporters of AS 5371 3C2 234 Thickness 0.002″ Shim, Foil, Strip, Coil
Exporter of AS5371 3C4-234 Thickness 0.004″ Shims, Foils, Strips, Coils
Exporters of AS 5371 3C4 234 Thickness 0.004″ Shim, Foil, Strip, Coil
Exporter of AS5371 CX-230 Thickness 0.0508 mm Shims, Foils, Strips, Coils
Exporters of AS 5371 CX 230 Thickness 0.050 mm Shim, Foil, Strip, Coil
Exporters of AS 5371 CX230 Thickness 0.05 mm Shim, Foil, Strip, Coil
Exporter of AS5371 CX-430 Thickness 0.1016 mm Shims, Foils, Strips, Coils
Exporters of AS 5371 CX 430 Thickness 0.100 mm Shim, Foil, Strip, Coil
Exporters of AS 5371 CX430 Thickness 0.10 mm Shim, Foil, Strip, Coil
Exporter of AS5371 CX4-230 Thickness 0.0508 mm Shims, Foils, Strips, Coils
Exporters of AS 5371 CX4 230 Thickness 0.050 mm Shim, Foil, Strip, Coil
Exporters of AS 5371 CX4 230 Thickness 0.05 mm Shim, Foil, Strip, Coil
Exporter of AS5371 CX4-430 Thickness 0.1016 mm Shims, Foils, Strips, Coils
Exporters of AS 5371 CX4 430 Thickness 0.100 mm Shim, Foil, Strip, Coil
Exporters of AS 5371 CX4 430 Thickness 0.10 mm Shim, Foil, Strip, Coil
Exporter of AS5371 3C2-234 Thickness 0.0508 mm Shims, Foils, Strips, Coils
Exporters of AS 5371 3C2 234 Thickness 0.050 mm Shim, Foil, Strip, Coil
Exporters of AS 5371 3C2 234 Thickness 0.05 mm Shim, Foil, Strip, Coil
Exporter of AS5371 3C4-234 Thickness 0.1016 mm Shims, Foils, Strips, Coils
Exporters of AS 5371 3C4 234 Thickness 0.100 mm Shim, Foil, Strip, Coil
Exporters of AS 5371 3C4 234 Thickness 0.10 mm Shim, Foil, Strip, Coil
AS5371 SAE Aerospace Standard (AS)
SAE AS 5371 Standard For Notched Shims For Magnetic Particle Inspection
QQI Shims For Magnetic Particle Inspection
Quantitative Quality Indicators are the Magnetic Particle Test Shims
QQIs
Quantitative Quality Indicator Test Piece Shims
Quantitative Quality Indicators (QQI) are magnetic particle test piece shims with
artificial defects used to verify field direction and relative strength.
QQIs are also used to balance multi-directional fields and to increase productivity
by minimizing magnetizing shots. The QQI indicator shims are packaged in sets of five.
Description
0.002 inch (0.05 mm) thickness with a notch flaw depth of 30% of shim thickness
0.004 inch (0.10 mm) thickness with a notch flaw depth of 30% of shim thickness
Four circle-cross notch patterns, to be cut by user into four separate shims.
0.002 inch (0.05 mm) thickness with a notch flaw depth of 30% of shim thickness.
Magnetic Particle Inspection Flux Indicator Strips and Quantitative Quality Indicators (QQI)
Magnetic particle test pieces will help you maintain your mag particle process by verifying
magnetic particle performance. Use to check for mag particle deterioration, to compare
different magnetic powders, to verify sensitivity or visibility or to assure field direction
and strength. In this blog we look at the primary use of Quantitative Quality Indicators (QQIs)
and Magnetic Flux Indicators which are to verify field direction and strength.
Field strength and orientation are key factors in a successful magnetic particle examination.
Sufficient magnetic field must be present to form indications on the surface being examined.
And because magnetism is directional in nature, only discontinuities that cross the lines of flux
will produce leakage fields to form those indications.
Unfortunately, the magnetic field within the part cannot be measured directly. So many practitioners
use artificial flaws or test pieces to confirm magnetic field strength. At the same time, artificial flaws
can confirm direction since only those orthogonal to the lines of flux will form indications.
The most common artificial flaws in use are QQIs and Flux Indicator Strips. Each has its own advantages
and disadvantages to consider when choosing the right tool for your inspection.
Quantitative Quality Indicators (QQI)
QQIs are artificial flaw notched shims that are attached to example parts, commonly used to demonstrate
both field strength and direction within a part. Available in several different configurations,
QQIs are thin steel shims with etched patterns in circular and cross shapes to provide indications in all directions.
The steel alloy and notch dimensions, as specified in AS 5371, are designed to provide indications when the
base part is magnetized to at least 30 gauss. The thin shims can conform to curved part surfaces,
and they are typically affixed to a part using permanent adhesives.
QQIs are useful for setting up the magnetization parameters for part-specific techniques and can be used to
create an example part for the daily system performance check of the magnetizing equipment.
They are very important for the setup and balance of multi-directional fields, since they have circular flaws
that show indications in all directions simultaneously.
Magnetic Flux Indicators
Laminated Magnetic Flux Strips, also known as Type G Burmah-Castrol Strips, have a core of high-permeability
steel with brass cladding 0.002 in / 0.05 mm thick on both sides. The core material has three slots of
different widths, providing discontinuities that show as linear indications in a magnetic field.
The strips are commonly used with wet visible materials for power pack equipment and yoke inspections
but can also be used with dry magnetic powders. Laminated Magnetic Flux Strips are stiffer than QQIs,
and do not conform to curved surfaces easily. But unlike QQIs, laminated Magnetic Flux Strips are not
permanently affixed to a part, so they can be reused for multiple applications. Because they form linear indications
in only one direction, laminated Magnetic Flux Strips are not suitable for use with multi-directional magnetization.
The most important point to remember when using Flux Indicator Strips is that they may only be used to demonstrate
the direction of magnetic flux, not the field strength. Determining the strength of the magnetic field requires a part
with known discontinuities, the use of QQIs, or direct measurement using a calibrated gauss meter.
For more detailed instructions on the use of QQIs and Flux Indicator Strips, please refer to ASTM E709, E1444, and E3024.
QQI Shims
Developed and predominantly used in the United States QQI Shims, or to give them their official name,
AS5371 Notched Shim Indicators have been introduced in to the European market initially by Rolls Royce.
These are also now used by other aerospace primes and when working to ASTM E 1444 for Magnetic Particle Inspection.
These notched shims are not necessarily an alternative to the conventional Type 2 laminated strip as they have been
designed for use with multi-directional magnetisation in mind. The type 2 strip is more robust, quicker and easier to
use and more cost effective however, if you are looking to verify a magnetic particle inspection technique and have
a customer requirement then AS5371 Notched Shim Indicators need to be used.
AS 5371 Reference Part Number Common Reference Thickness Style
CX-230 R 5121 KSC-230 0.002″
CX-430 R 5141 KSC-430 0.004″
CX4-230 R 5124 KSC-4-230 0.002″
CX4-430 R 5144 KSC-4-430 0.004″
3C2-234 R5123 KSCT-234 0.002″ (flaw depths at 20%, 30” and 40% of thickness)
3C4-234 R5143 KSC4-234 0.004″ (flaw depths at 20%, 30” and 40% of thickness)
When in use it is very important that the shims are in good condition with minimal bends or kinks.
It is very easy to distort these shims increasing the artificial flaw depth so take care.
If you are trying to verify a predominantly flat surface then CX-430 or CX4-430 is for you.
These are a thicker material so are more robust.
If you have a curved radius to fit a shim to then CX-230 or CX4-230 will be required.
These shims are a thinner gauge so are easier to damage but will conform to a curved surface easily.
The 3C2 series consist of concentric rings at different flaw depths.
These can be used for multidirectional techniques or when a more quantified level of magnetisation is needed.
When using single direction magnetisation and one leg of the cross is aligned with the direction of magnetisation,
the CX series of shims are designed to show the axial part of the cross 90⁰ to the direction of magnetisation
and two arcs of the circle at nominally 30 ‘gauss’.
Inspection & Approval Certificates : C/W Certificate (Calibration Works Certificate) EN-10204 3.1 / DIN-50049 3.1 / ISO-10474 3.1, EN-10204 3.2
Mill Test Certificate, Material Test Certificate, BIS Approved, BIS Certified, B.I.S Approval, B.I.S Certification, ISI Mark, ISI Logo, ISI Certified,
NACE-HIC TM-0284 / NACE-MR-0103 / NACE-MR-0175 / ISO-15166, BS EN-9001, BS EN-9100, AS-9100, AS-9100D, IATF-16949,
NADCAP Certified, ITAR Compliant, CE-Marked, CE-Marking, European Pressure Equipment Directive PED-2014/68/EU, AD-2000-WO,
PED Certified, RoHS Compliant, ASME Boiler & Pressure Vessel Code Section-II Part A Edition 2025, API-6A (American Petroleum Institute),
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IR Class (Indian Register of Shipping), DGAQA Approved, NORSOK Approved Standard M-630, M-650 Rev.3, DFAR/DFARS Compliant,
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Bharat Electronics Limited (BEL), Hindustan Aeronautics Limited (HAL), Bharat Forge Limited, Mishra Dhatu Nigam Limited (MIDHANI),
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Japan, Latvia, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovenia, Spain, Sweden, Switzerland, Turkey, United Kingdom – Northern Ireland
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Oil Quenching, Water Quenching, TMCP
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Hardened Tempered (+HT), H&T, Quenched Tempered (+QT), Q&T, Oil-Quenched, Water-Quenched
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