1965-HKRS30-8-55_Part06 — Page 25

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(g) Materials suitable for application in electromagnetic devices making use

of the gyromagnetic resonance phenomenon.

50. Gravity meters (gravimeters) and specialized parts therefor, designed or

modified for airbome or marine ust.

GROUP G.

METALS AND MINERAL MANUFACTURES.

1. Ball and roller bearings and parts therefor.

2. Magnetic melals of all types and of whatever form, e.g. powder, strip, sheets,

castings, and blocks, possessing one or more of the following characteristics- (a) Grain oriented sheet or strip of a thickness of 0.1 mm. (0.004 inches)

or less;

(6) Initial permeability 50,000 or over:

(c) Remanence 98% or over of maximum flux for materials having magnetic

permeability;

(d) A composition capable of an energy product greater than 6 times 106

gauss-oersteds.

3. 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);

(6) Containing 1.3% or more niobium and/or tantalum;

(c) Nickel bearing stabilized steels, not elsewhere specified, having a total of 38% or more of alloying elements except auch steels containing less than 0.4% titanium or less than 0.8% niobium-tantalum:

(d) Precipitation hardening steels containing 4% or more nickel.

4. Cobalt, as follows-

(a) Raw materials including ores, residue, concentrates, matte, regulus, dross,

white alloys and red alloys;

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

(c) Cobalt metal, except Cobalt 60:

(d) Cobalt-bearing alloys, as follows-

(1) Containing 30% or more cobalt; or

(D) Conwining 19% or more cobalt and 14% or more chromium;

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

5. Niobium (columbium), as follows-

(a) Raw materials including ores, residue, concentrates, malte, regulus and

drass;

(b) Ferro-niobium and ferro-niobium-lantalum;

(c) Metal and niobium-based alloys containing 50% or more niobium of

50% or more niobium-tantalum in combination;

(d) Scrap forms of the metal and alloys covered under (c) above.

6. Germanium, not elsewhere specified.

7. Magnesium base alloys having a content of 0.4% or more of zirconium, of

1.5% or more of therium, or 1% or more of rare earth metals (cerium mischmetal), as follows

(a) Crude and semi-fabricated forms;

(b) Scrap forms.

8. Molybdenum, as follows-

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(a) Metal and molybdenum-based alloys containing 50% OF more

molybdenum;

(8) Molybdenum tubing and platinum-clad molybdenum tubing.

9. Nickel alloys, as follows-

(0) Nickel-chromium alloys containing at least 35% nickel, at least 12% chromium and at least 1.5% total thanium plus aluminium plus colum- bium, either separately or combined;

(6) Nickel-based alloys, not elsewhere specified.

10. Tungsten, as follows-

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

forms, not elsewhere specified;

(b) Tungsten wire and filament, coated or uncoated, cut or uncut.

11. Tantalum, as follows......

(4) Raw materials including ores, residue, concentrates, matte, regulus and

drose:

(b) Ferro-tantalum and ferrotantalum-niobium;

(c) Metal and tantalum-based alloys containing 60% or more salalum or

60% or more tantalum-niobium in combiriation;

( Scrap forms of the metal and alloys covered under (c) above;

(e) seamless pipe and tubing.

12. Titanium, as follows-

(a) Metal and titanium-based alloys containing 70% or more titanium; (b) Scrap forms of the metal and alloys covered under (0) above.

13. Artificial graphite having an apparent relative density of 1.90 or greater.

GROUP H.

CHEMICALS AND CHEMICAL PRODUCTS.

1. Primary explosives and príming compositions, as follows-

(a) Mercury fulrainate, lead azide, lead styphnate, lead thiocyanate, lead diaftroresorcinate, barium styphnate, tetrazent and diazodinitrophenol; primary explosives or priming compositions (mixtures) containing one or more of these chemicals;

(6) Sodium azide.

2. Hydraulic fluids, as follows-

(a) Syathetic, having a viscosity of not more than 4,000 centistokes at -65°F. (-$4°C) and not less than 1.5 centstokes at +302* F, (+150°C.);

(b) Which are or which contain as the principal ingredients petroleurs (mineral oils and which have a pour point of 30°F (34°C) or lower and which are thermally stable at +700°F. (+371°C)

3. Boron, as follows-

(a) Boron element, boron compounds and mixtures in which the baron-10

isotope comprises more than 20% of the total boron content;

(b) BOTOD Element (metal) all forms;