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Chapter GROUP 3H Metals, Minerals and their Manufactures

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

In this Group, the following definitions apply—

  • “Crude forms” means

  • anodes, balls, bars (including notched bars and wire bars), billets, blocks, blooms, brickets, cakes, cathodes, crystals, cubes, dice, grains, granules, ingots, lumps, pellets, pigs, powder, rondelles, shot, slabs, slugs, sponge, sticks.

  • “Semi-fabricated forms” means (whether or not coated, plated, drilled or punched)—

    1. (i)

      in the form of wrought or worked materials fabricated by rolling, drawing, extruding or grinding, (i.e. angles, channels, circles, discs, dust, flakes, foils and leaf, forging, plate, powder, pressings and stampings, ribbons, rings, rods (including bare welding rods, wire rods, and rolled wire). Sections, shapes, sheets, strip, pipe and tubes (including tube rounds, squares, and hollows), drawn or extruded wire);

    2. (ii)

      cast material produced by casting in sand, die, metal, plaster or other types of moulds, including high pressure castings, sintered forms and forms made by powder metallurgy.

IL1601

Inert gas and vacuum atomizing technology to achieve sphericity and uniform size of particles in metal powders regardless of the type of metal and regardless of whether or not this powder is specified in this Schedule

D
IL1602

Pyrolitic deposition technology and specially designed components related thereto the following—

(a)

Technology for producing pyrolitically derived materials formed on a mould, mandrel or other substrate from precursor gases which decompose in the 1,573 K (1,300°C) to 3,173 K (2,900°C) temperature range at pressures of 133.3 Pa to 19.995 kPa (including the composition of precursor gases, flow rates, and process control schedules and parameters)

D
(b)

Specially nozzles for the above processes

C
IL1631

Magnetic metals of all types and of whatever form having any of the following characteristics—

(a)

Initial permeability: 0.15 henry/m (120,000 gauss/oersteds) or more calculated at induction 0 and magnetic field strength 0 or the equivalent.

C

  • Note: Measurement of initial permeability must be carried out on materials which:

(a)

have a thickness between 0.076 mm and 2.54 mm; and

(b)

are fully annealed.

(b)

Remanence: 98.5% or over of maximum magnetic flux for materials having magnetic permeability

C
(c)

Capable of an energy product of 200,000 J/m3 (25 × 106 gauss-oersteds) or more

C
(d)

Grain-oriented iron alloy sheets or strips of a thickness of 0.1mm or less

C
(e)

Magnetostrictive alloy having either of the following characteristics—

(1)

saturation magnetostriction more than 5 × 10−4 or

C
(2)

magnetomechanical coupling factor (k) more than 0.8

C
(f)

Amorphous alloy strips having both of the following characteristics

C
(1)

composition having a minimum 75 weight per cent of one or more of the elements iron, cobalt and nickel; and

(2)

saturation magnetic induction (Bs) of 1.6 tesla or more, and either—

(i)

strip thickness of 0.020 mm or less; or

(ii)

electrical resistivity of 2 × 10−4 ohm —cm or more.

IL1635

Steel alloys in crude or semi-fabricated form, which contain all of the following major alloy elements in the amounts listed by weight—

C
(a)

4.5 to 5.95% nickel;

(b)

0.3 to 1.0% chromium;

(c)

0.2 to 0.75% molybdenum;

(d)

0.04 to 0.15% vanadium;

(e)

Less than 0.19% carbon.

IL1648

Cobalt-based alloys (i.e. containing a higher percentage by weight of cobalt than of any other element), the following—

(a)

Those which are dispersion strengthened and contain more than 1% of oxides of thorium, aluminium, yttrium zirconiun or cerium

C
(b)

Those containing 0.05% or more of scandium, yttrium, didymium, cerium, lanthanum, neodymium, or praseodymium

C
IL1661

Nickel-based alloys (i.e. containing a higher percentage by weight of nickel than of any other element), the following—

(a)

Those which are dispersion strengthened and contain more than 1% of oxides of thorium, aluminium, yttrium, zirconium, cerium, or lanthanum

C
(b)

Those containing 0.05% or more scandium, yttrium, didymium, cerium, lanthanum, neodymium, or praseodymium

C
(c)

Those containing 10% or more by weight of aluminium in the form of nickel aluminide, in crude or semi-fabricated forms, and scrap thereof

C
IL1672

Titanium-based alloys containing 12% or more by weight of aluminium in the forms of titanium aluminide, in crude or semi-fabricated forms, and scrap thereof

C
IL1675

Superconductive materials of all types and processed conductors containing at least one superconducting constituent, which are designed for operation at temperatures below 103 K (−170°C)

C

except

Processed conductors having superconducting filaments embedded in a copper or copper-based mixture matrix and either of the following sets of characteristics—

either:

  1. (a)
    1. (i)

      the superconducting constituent, when evaluated in sample lengths of less than one metre, does not remain in the superconducting state when exposed to a magnetic induction in excess of 12T at a temperature of 4.2 K (−268°C);

    2. (ii)

      the superconducting constituent or filament has a cross-section area greater than 3.14 × 10−4 mm2 (20-micrometre diameter for circular filaments); and

    3. (iii)

      the conductor is either non-coated or insulated with varnish, glass fibre, polyamide or polyimide;

or

  1. (b)
    1. (i)

      containing niobium-titanium wire;

    2. (ii)

      having a filament cross-sectional area of more than 9.5 × 10−5 mm2 (11-micrometre diameter for circular filaments) or greater; and

    3. (iii)

      a mass of each processed conductor including the matric not exceeding 10 kg.

(Note: Superconductive materials are metals, alloys and compounds which lose electrical resistance near absolute zero of temperature, i.e. they have infinite electrical conductivity and can carry very large electrical currents without Joule heating. The superconducting state for each material is individually characterised by a critical temperature, a critical magnetic field (which is a function of temperature) and a critical current density (which is a function of both magnetic field and temperature). Materials remain in the superconducting state provided temperature, magnetic field and current density are all less than the critical values.)

PL7001

Aluminium alloys, the following: tubes, bars or forged forms having an outside diameter greater than 75mm and less than 400mm and a tensile strength of 460 × 106 N/m2 or greater

W
PL7002

Maraging steel alloy capable of ultimate tensile strength of 2.050 × 109 N/m2 or greater, whether or not finally heat treated, in crude, semi-fabricated or fabricated form

W
PL7012

Tantalum (or Tantalum lined) crucibles for casting actinide metals

W