1967-HKRS30-8-58_Part02 — Page 46

1601.

32

Semi-fabricated forms (whether or not coated, plated, drilled or punched):

() Wrought or worked materials fabricated by rolling. drawing, extruding, forging, impact extruding, pressing, graining, atomizing and grinding, Le. angles, channels. circles, discs, dust, flakes, foil and leaf, forginga, plates, powder, pressings and stampings, ribbons, rings, rods (including bars welding rods, wire rods and rolled wire), sections, shapes, sheets, strip, pipe and tubes (including tube rounds, squares and hollows), drawn or extruded wire.

(ii) Cast material produced by casting in sand, dic, metal, plaster or other types of moulds, including high pres- sure castings, sintered forms, and forms made by powder metallurgy.

Anti-friction bearings, not elsewhere specified, as follows- (a) All ball and cylindrical roller bearings having an inner bore diameter of 10 millimetres or less and tolerances of ABEC 5, RBEC 5 (or equivalents) or better and either or both of the following characteristics—

() Made of special materials, i.c. with rings, balls or collers made from any steel alloy or other material except the following-

Low-carbon steel: SAE-52100 high carbon chromium steel; SAE-461$ nickel molybdenum steel; or equiva- lenta (partial illustrative examples of special materials for this purpose are: high-speed tool steels; stainless steel; monels; beryllium);

(i) Manufactured for use at normal operating tempera- tures over 150°C. (32°F) ¢ither by use of special materials or by special heat treatment;

(8) All ball and cylindrical roller bearings (otclusive of separable ball bearings and thrust ball bearings) having an inner bore diameter exceeding 10 millimetres and having tolerances of ABEC 7, RBEC 7 (or equivalents) or better and either or both of the characteristics in sub-item (46) or (aki)

(c) Hearing parts as follows--

163.5.

4648.

1649.

1654.

outer rings, inner rings, retainers, balls, rollers and sub- assemblies usable only for bearings covered by sub-items (a) and (b).

1638.

1631.

Magnetic metals of all types and whatever form possessing one or more of the following characteristics-

4661.

(a) Grain oriented sheet or strip of a thickness of 0.1 milli-

metre (0,004 inches) or less;

(b) Inilial permeability 70,000 gauss-oersteds (0.0875 Henry /

metre) or over:

(c) Remanence 98.5% or over of maximum flux for materials

having magnetic permeability;

1668.

(d) A composition capable of an energy product greater than

six times 106 gauss-oersteds.

33

Iron and steels, alloyed as follows-

(a) Containing 10% or more molybdenum (but more than 5% molybdenum in any alloys containing more than 14% chromium), or

(b) Containing 15% or more niobium and/or tantalum;

(c) Nickel bearing stabilized steels, n.d.s., having a total of 38% or more of alloying clements except such steels containing less than 0.4% titanium or less than 0.8% niobium- tantalum;

(d) Precipitation hardening steels containing 4%%

nickel.

Cobalt, as follows-

or

more

(2) Raw materials including ores, residus, concentrates, matte,

regulus, dross. white alloys and red alloys:

(b) Ferro-cobalt and other cobalt melting base materials;

(c) Cobalt metal, except Cobalt 60;

(D) Cobalt-bearing alloys, as follows-

(1) Containing 50% or more coball; or

(ii) Containing 19% or more cobalt and 14% or more chromium;

(e) Scrap forms of the metals and alloys covered above.

Niobium (columbium) as follows-

(a) Raw materials including ores, residue, concentrales, malto,

regulus and dross;

(6) Ferro-niobium and ferro-niobium-tantalum

(c) Metal and niobium-based alloys containing 30% or more niobium or 60% or more niobium-tantalum in combination; (d) Scrap forms of the metal and alloys covered under sub-

item (c).

Magnesium-based alloys having a content of 0.4% or more of zirconium, or 1.5% or more of thorium. or 1% or more of rare earth metals (cerium mischmetalk, and scrap forms of the foregoing

(See also Atomic Energy List, item A.E. 35{e}}))

Molybdenum metal and alloys containing 90% or more molybdenum.

Nickel alloys, as follows-

(a) Nickel-chromium alloys containing at least 35% nickel, at least 12 chromium and at least 1.5% total titanium plus aluminium plus columbium, either separately or combined; (5) Nickel-based alloys, not elsewhere specified Tungsten, as follows—

(a) Tungsten metal and tungsten-based alloys in crude and

semi-fabricated forms, not elsewhere specified;