# The Export Control (Amendment) (No. 2) Regulations 2025, Regulation 7: Amendments to Category 1 - Special Materials and Related Equipment


(1) The section headed Category 1 - Special Materials and Related Equipment is amended as follows.
(2) In the section headed 1B Test, Inspection and Production Equipment, in paragraph 2 of the Technical Notes to entry 1B228, for “contractor” substitute “contactor”.
(3) In the section headed 1C Materials, after entry 1C450, insert—
“
1C513
'High-entropy alloy' or 'refractory metal and alloy' powders, not specified in 1C002, having a surface modified with 'inoculants'.
Technical Notes:
For the purposes of 1C513:
1.
'High-entropy alloys' are alloys having at least 5 principal metallic elements, each having concentration within the range of 5 to 35 atomic percent, from the following list: Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Hf, Ta or W.
2.
'Inoculants' are additives that promote grain nucleation and increase the total area of grain boundaries to inhibit solidification defects.
3.
‘Refractory metals and alloys' are metals and alloys of niobium, molybdenum, tungsten and tantalum.
”.

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Source: https://www.legislation.gov.uk/uksi/2025/1197/regulation/7 (the official version)
Page: https://openlegislation.uk/export-control-amendment-no-2-regulations-2025/regulation-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.