Wire sensitivity standards (ASTM E-747)

Wire sensitivity standards are used in X-ray inspection to assess the sensitivity of the control circuit used in scanning. They are seven elongated metal wires enclosed in a flexible plastic case. All standards are made in accordance with the American standard ASTM E-747 and ISO 19232-1. In order to minimize errors, it is recommended to use wire standards made of an alloy similar to the material of the object.

Wire standards of sensitivity "Sprut" are made of steel, aluminum, copper, titanium and nickel according to TU 26.51.33-066-96651179-2017. Standards of sensitivity according to ASTM E-747 can be applied at temperatures from minus 50 ° to plus 55 ° С and relative air humidity from 0 to 80%. Wire standards must be protected from mechanical damage (drops, shocks, etc.).

Marking the sensitivity standards of wire (ASTM E-747)

In the plastic covers of the standards, made in accordance with ASTM E-747, there are also marks that allow you to visually determine the type of wire standards, both in preparation for the creation of the image, and during its viewing.

On the left is the alphanumeric designation of the sensitivity standard, where the digit characterizes the material of the standard, and the letter indicates the typical size of the set of wires (A, B, C, D, where D denotes the standards with the largest wires). On the right is the identification number of the thickest wire (6/11/16/21, the larger the number, the thicker the wire).

For example, if we need a steel standard, with wires of small diameter, the marking will be as follows: ASTM 1A 6, where 1 is the designation of steel; A - the letter that determines the size of the wires, and the number 6 - the typical number of the largest wire in the kit. If a relatively large nickel wire is needed, then it will be necessary to look for 3D 16, where 3 is the designation of nickel; D - the letter that determines the size of the wires, and the number 16 - the typical number of the largest wire.

Unlike the groove sensitivity standards, the wire does not need to be verified. Their use is terminated in case of damage to the plastic shell (cover) or if signs of corrosion of the metal on the surface of the standards are detected.

There are also standards produced in accordance with the Russian state standard GOST 7512-82 and European standard EN 462-1.

Technical Specifications of Sprut Wire Sensitivity Standards (ASTM E-747)

Type of controlled material - aluminum