! Quality and size requirements

4. Quality Requirements: (1) All material shall have a minimum graphitic arbon content, in a moisture-free sample, of 85 percent. The determination of raphitic carbon content shall be made as the difference between 100 percent and he total percentage of ash plus volatile matter.

(2) All graphite delivered against any contract shall be uniform in quality nd shall be free from foreign material.

(3) The material shall be sufficiently free of oil and shall be of such nature ith regard to toughness of flakes and freedom from thin or ragged edges that it ill be capable of meeting, after processing in accordance with industry practices, e specifications placed by crucible manufacturers upon processed crystalline ake graphite of crucible grade.

b. Size Requirements:

Material shall conform to the following requirements when a representative mple of 50 grams is agitated 15 minutes on a Tyler Ro-Tap sieve shaker or quivalent machine:

Material shall be packed in steel drums or wood barrels or kegs. Containers ay be of any normal size and shape, but all containers comprising a given lot all be of the same nominal size and shape.

Steel drums shall conform to ICC Specification 37D, except that side seams all be welded. The interior shall be coated with a flexible and corrosion restant enamel. The bottom shall be double-seamed and compound-lined. The wer shall have a minimum of 20 lugs and shall have a tubular rubber gasket. Barrels or kegs shall conform to Joint Army-Navy Specification JAN-P-109.

Inspection

Each lot of material shall be subject to sampling, inspection, and test by the urchaser or its designee.

P-22b December 1, 1947 (Supersedes P-22, issue of November 1, 1944, Grade A)

MUNITIONS BOARD

WASHINGTON, D. C.

MATERIAL PURCHASE SPECIFICATIONS

GRAPHITE-CRYSTALLINE FLAKE-LUBRICANT AND PACKING GRADE

1. Description

This specification covers crystalline flake graphite suitable for use in the manufacture of lubricants and graphite packings.

2. Quality requirements

a. All material purchased under this specification shall have a minimum graphitic carbon content in a moisture-free sample of 94 percent. The determination of graphitic carbon shall be made as the difference between 100 percent and the total percentage of ash plus volatile matter.

b. Representative samples of each lot shall show no presence of oil on the surface of the water when a heaping teaspoonful of the sample is placed in a one-liter beaker of distilled water.

e. All graphite in a lot shall be uniform in quality and shall be free from foreign material.

d. The material shall have an unctuous feel.

e. Abrasion shall not exceed five milligrams loss in weight of the brass dise when determined as prescribed under Paragraph 4.

3. Packaging

Material shall be packed in steel drums or wood barrels or kegs. Containers may be of any normal size and shape, but all containers comprising a given lot shall be of the same nominal size and shape.

Steel drums shall conform to ICC Specification 37D, except that side seams shall be welded. The interior shall be coated with a flexible and corrosion-re sistant enamel. The bottom shall be double-seamed and compound-lined. The cover shall have a minimum of 20 lugs and shall have a tubular rubber gasket. Barrels or kegs shall conform to Joint Army-Navy Specification JAN-P-10 4. Inspection

Each lot of material shall be subject to sampling, inspection, and analysis of the purchaser or its designee.

Apparatus for the abrasion test shall consist of a smooth-bottom brass co tainer 21⁄2 inches in diameter and 4 inch in depth, upon which the graphite s placed. A brass disk two inches in diameter, buffed on one face and weighing approximately 60 grams, shall be weighed and placed upon the graphite in the cup. The disk, connected to a shaft, shall be rotated under a weight of fou pounds. Any other suitable apparatus for determining abrasion may be used. Thirty grams of a 15-percent suspension of graphite in oil, Specification VV-O-581 Grade 8, shall be introduced into the cup and the polished, weight disk connected with the shaft. The disk shall be rotated 2,000 revolutions at 100 r. p. m., removed, washed with chloroform, wiped clean, allowed to come to room temperature, and weighed to a fraction of a milligram. This procedure shal be repeated twice, and the total loss in milligrams for a total of 6,000 revolutions shall be recorded as abrasion loss.

This specification covers kyanite ore of British Indian origin or equal, suitable for the manufacture of refractories.

2. Chemical and physical requirements

a. Chemical Requirements.

Each lot of material shall conform to the following chemical limits:

Material shall be lumpy ore, of which not more than 50 percent of any lot shall pass a 2-inch screen and not more than 10 percent shall pass a 1-inch screen.

3. Inspection and analysis

Material shall be subject to inspection and analysis by the purchaser or its designee.

This specification covers the following Grades of pig lead: a. Corroding Lead. b. Common Desilverized Lead-A.

c. Soft Undesilverized Lead.

Chemical and physical requirements

4. Chemical Requirements.

Each lot purchased against this specification shall be of one of the three Grades sted in Paragraph 1 and shall conform to the chemical requirements of Specificaon B-29 of the American Society for Testing Materials, latest revision, for the ppropriate Grade.

b. Physical Requirements.

All material shall be in a pig form. Pigs may be of any size and shape usual ith the producer, but all pigs in any given lot shall be of the same nominal ze and shape. Pigs shall have a clean surface, free from dirt, slag, or foreign aterial.

Inspection

Material shall be subject to inspection and analysis by the purchaser or its esignee.

P-29

2 December 1944

ARMY AND NAVY MUNITIONS BOARD

WASHINGTON, D. C.

MATERIAL PURCHASE SPECIFICATIONS

MANGANESE ORE-BATTERY GRADE

. Description

This specification covers high-managanese-dioxide ore, sometimes referred to is black manganese ore, suitable for the production of dry-cell batteries and ertain chemicals. The specification refers particularly to ore originating in he Gold Coast Colony and in the Phillipsburg District of the State of Montana. This does not preclude the offering and consideration of ore of other origin.

1. Chemical, physical, and other requirements

a. Chemical Requirements: Each lot of Gold Coast or Phillipsburg ore shall onform to the following:

Percent By Weight,
Dry Basis

Chemical requirements for ore of other origin will be determined at the time of offer.

b. Physical Requirements:

Ore may be either in its natural state or in the form of concentrates. It shall not have been pulverized for use in the manufacture of batteries.

c. Other Requirements:

Each lot of ore, regardless of source, shall be suitable for the manufacture of dry-cell batteries of current standard commercial quality, by the existing com mercial processes. Failure to meet this requirement shall be cause for rejection regardless of chemical analysis.

3. Packaging

Material shall be supplied in bulk. Each lot shall be identified as to its origin by: (1) Country, State, or Territory.

(2) District.

(3) Individual mine or deposit.

4. Inspection

Material shall be subject to inspection and analysis by the purchaser or it designee for conformance with all requirements of this specification, including the requirements of Paragraph 2c.

P

1 September 1941 (Supersedes issue

17 June 1943

ARMY AND NAVY MUNITIONS BOARD

WASHINGTON, D. C.

MATERIAL PURCHASE SPECIFICATIONS

MANGANESE ORE-METALLURGICAL GRADE

1. Description

This specification covers manganese ore suitable for the manufacture of com mercial grades of ferromanganese and special manganese alloys, and for the production of those chemicals which do not require the use of ore of high manganese dioxide content.

2. Chemical and physical requirements

a. Chemical Requirements: Each proposal to sell shall set forth the chemical analysis limits which the seller is willing to guarantee. These will become the rejection limits for material delivered against a resulting contract. Each delivery against such contract need not meet these rejection limits but the weighted average of all deliveries shall meet such limits. Should any shipment fall outside these limits, and should the weighted average analysis of all ore delivered, including the shipment in question, thereby fall outside the specified limits, that shipment and subsequent shipments will not be paid for until additional ship ments have been made which are of such quality as to bring the weighted average analysis of all shipments again within the specified limits, at which time all ship ments to date will be paid for.

Offers will not be considered unless the proposed chemical analysis limits are at least within the following in all respects:

Guaranteed analyses superior to that stated above are desired and the right is reserved to reject any proposal concerning which the proposed guaranteed analysis is inferior to the following:

By Weight (dry basis)

Each bidder should, in the interest of having his bid accepted, offer the best chemical analysis limits which he is prepared to accept as rejection limits on a weighted average basis.

The price offered shall be in terms of cents per long ton units (22.4 pounds) of actual contained manganese and should be based upon an analysis (dry basis)

of:

48.0%

Manganese

6.0% Iron

11.0%

Silica plus Alumina

0.12% Phosphorus

Actual payment for ore will be made on the basis of the actual analysis deivered. Payment in cents per long ton unit of contained manganese will be the ase price agreed upon, plus or minus the following premiums or penalties:

Premiums: Manganese content above 48.0% (dry basis); 2¢ for each 1.0%. Iron content below 6.0% (dry basis); 1⁄2¢ for 1.0%.

Penalties: Manganese content below 48.0% (dry basis); 1¢ for each 1.0%, down to and including 44.0%. Below 44.0%; 4¢, plus 11⁄2¢ for each 1.0%. Iron content above 6.0% (dry basis); 1¢ for each 1.0%, up to and including 8.0%. Above 8.0%; 2¢, plus 34¢ for each 1.0%. Silica plus Alumina content above 11.0% (dry basis); 1¢ for each 1.0%. Phosphorus content above 0.12% (dry basis); % for each 0.01%.

b. Physical Requirements: Three types of material, according to physical haracteristics, are covered by this specification. All offers shall stipulate the ype covered and the following shall constitute the rejection limits for each type. Type I. Lumpy Ore-shall be natural ore, unprocessed except for grading, rashing, or screening. Not more than 5% shall pass a Tyler standard 20 mesh ereen.

Type II. Fine Ore-shall be natural ore, unprocessed except for grading, washng, or screening. Not more than 15% shall pass a Tyler standard 20 mesh screen. Type III. Nodules or Sinter-shall be natural fines, or concentrates, densely glomerated by the application of heat. Not more than 5% shall pass a Tyler tandard 20 mesh screen.

Type I material is preferred.

The above physical specification shall apply to the weighted average of all aaterial delivered against a contract. Individual shipments which fall outside he requirements will be treated as detailed under Paragraph 2a for shipments alling outside chemical limits.

Inspection

. Each shipment shall be subject to sampling, weighing, chemical analysis, and creen test by the purchaser or its designee.

ARMY AND NAVY MUNITIONS BOARD

WASHINGTON, D. C.

MATERIAL PURCHASE SPECIFICATIONS

MERCURY

1. Description

This specification covers prime virgin mercury.

4. Chemical requirements

Each lot of material purchased against this specification shall contain not less than 99.5 percent mercury and shall be bright and clean.

3. Packaging

Mercury shall be packed in clean wrought-iron or steel flasks of standard quality and design, securely stoppered with an iron screw plug, slightly lubricated with oil, white lead, or other suitable lubricant.

Each flask shall have a nominal net capacity of 76 pounds of mercury. Flasks shall be free of rust or other foreign material and shall be in good physical condition.

4. Inspection and analysis

Material shall be subject to inspection and analysis by the purchaser or its designee. Chemical analysis shall include a determination of the antimony, arsenic, and silver content of each lot, as well as the mercury content.