GOST 17746-96

• gost-17746-96.pdf (297.81 KiB)
  ГОСТ 17746-96

GOST 17746−96 spongy Titanium. Specifications

GOST 17746−96

Group W51

INTERSTATE STANDARD

TITANIUM SPONGE

Specifications

Sponge titanium. Specifications

ISS 77.120*
GST 17 1522
_______________
* According to the official website of Rosstandart
OKS 77.120, 77.120.50, here and hereafter. -
Note the manufacturer’s database.

Date of introduction 2000−07−01

Preface

1 DEVELOPED by the Interstate technical Committee for standardization MTK 105, Ukrainian scientific-research and design titanium Institute and the State Institute of titanium and magnesium (Russia)

SUBMITTED to the State Committee of Ukraine for standardization, Metrology and certification

2 ADOPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 9 dated April 12, 1996)

The adoption voted:

3 Resolution of the State Committee of the Russian Federation for standardization and Metrology dated 19 October 1999 No. 353-St inter-state standard GOST 17746−96 introduced directly as state standard of the Russian Federation from July 1, 2000

4 REPLACE GOST 17746−79

5 REISSUE

1 Scope

This standard applies to the titanium sponge obtained of magnesium thermal method vacuumforming cleaning and being the source material for the production of semi-finished products of titanium and its alloys.

2 Normative references

The present standard features references to the following standards:

GOST 9853.1−96 Titan spongy. Method for determination of nitrogen

GOST 9853.2−96 Titan spongy. Method for determination of iron

GOST 9853.3−96 Titan spongy. Methods for determination of carbon

GOST 9853.4−96 Titan spongy. Methods of determination of chlorine

GOST 9853.5−96 Titan spongy. Methods for determination of oxygen

GOST 9853.7−96 Titan spongy. Method for the determination of aluminium

GOST 9853.9−96 Titan spongy. Method for determination of silicon

GOST 9853.10−96 Titan spongy. Method of determination of niobium and tantalum

GOST 9853.11−96 Titan spongy. Method for determination of copper

GOST 9853.12−96 Titan spongy. Method for the determination of zirconium

GOST 9853.13−96 Titan spongy. Method for determination of tin

GOST 9853.14−96 Titan spongy. Method for determination of magnesium

GOST 9853.15−96 Titan spongy. Method for the determination of molybdenum

GOST 9853.16−96 Titan spongy. Method for the determination of tungsten

GOST 9853.17−96 Titan spongy. Method for the determination of palladium

GOST 9853.18−96 Titan spongy. Method of determination of manganese

GOST 9853.19−96 Titan spongy. Method for the determination of chromium

GOST 9853.20−96 Titan spongy. Method for the determination of vanadium

GOST 9853.21−96 Titan spongy. Method for the determination of hydrogen

GOST 9853.22−96 Titan spongy. Method for the determination of Nickel

GOST 9853.23−96 Titan spongy. Spectral method for determination of silicon, iron, Nickel

GOST 9853.24−96 Titan spongy. Spectral method of determination of vanadium, manganese, chromium, copper, zirconium, aluminium, molybdenum, tin, magnesium and tungsten

GOST 10157−79 Argon gaseous and liquid. Specifications

GOST 10354−82 polyethylene Film. Specifications

GOST 14192−96 Marking of cargo

GOST 19360−74 the film liner Bags. General specifications

GOST 23780−96 spongy Titanium. Methods of sampling and sample preparation

GOST 23782−96 spongy Titanium. The method of determining the fractional composition

GOST 30311−96 spongy Titanium. Method for determination of hardness according to Brinell

3 Symbols and abbreviations

3.1 marking stamps letters mean: TG — spongy titanium, TV — solid; the numbers are: 90, 100, 110, 120, etc. — hardness values in units of Brinell HB, determined by the indentation of a steel ball of 10 mm diameter under stress 14715 N (1500 kgf) and the duration of exposure was 30 s.

3.2 designation of fractional composition of digits indicates the maximum size in one dimension pieces of sponge titanium corresponding to the size of sieves in which the pieces scattered. The minus sign means that the result of sieving the product obtained through a sieve of the specified size of holes, and the plus sign above the sieve.

For titanium sponge fractions -12+2 mm, -12+5 mm and -5+2 mm to the brand designation added the letter «M».

4 General technical requirements

4.1 the Characteristics (properties)

4.1.1 depending on the chemical composition and mechanical properties are the following grades of titanium sponge: TG-90, TG-100, TG-110, TG-120, TG-130, TG-150 and TG-TV.

Chemical composition and Brinell hardness of spongy titanium should meet the requirements specified in table 1.


Table 1 — Chemical composition and hardness of titanium sponge

4.1.2 titanium Sponge (except TG-TV) obtained in the form of lumps of irregular shape should be divided into the fractions: -70+12 mm and -12+2 mm.

By agreement of the parties is allowed to produce sponge titanium fractions: -100+12 mm -25+12 mm, -12+5 mm, -5+2 mm, etc.

4.1.2.1 In batches of titanium sponge of all brands (except TG-TV) and fractions should be no more than 10% of pieces are larger than the upper limit of fractions.

4.1.2.2 In batches of titanium sponge stamps TG-90, TG-100, TG-110, TG-120 faction -70+12 mm should not be more than 4% of the batch weight pieces smaller than the lower limit of the fraction for the remaining grades and factions — more than 8%.

4.1.3 the titanium Sponge stamps TG-TV made in the form of compressed briquettes with a diameter from 115 to 170 mm and a height of from 20 to 180 mm.

Scree moulded briquettes should not be more than 1% of the batch weight.

By agreement with the consumer of titanium sponge stamps TG-TV comes with briquettes other sizes or abrication.

4.1.4 the titanium Sponge must not contain foreign objects and impurities.

4.1.5 titanium Sponge (except for the brand TG-TV) must not contain pieces of titanium sponge with defects listed in Appendix A.

In spongy titanium with the grain size less than 12 mm are allowed pieces of titanium sponge with defects listed in Annex A, but not more than 0,03% of the mass of the party.

4.2 Marking

4.2.1 Transport labeling performed according to GOST 14192 with the indicating manipulation of the sign 5 according to GOST 14192 («Limit temp -50°C — + 50°C» GOST 14192).

For products Packed in 4.3.2.1, additionally point sign 7 according to GOST 14192 («Sealed package» GOST 14192).

In the case of carload shipments the transportation markings on the packaging do not cause.

4.2.2 Labeling describing the products should be applied to each packaging unit packaging separate from traffic markings.

4.2.3 Labeling describing the products should include:

is a trademark, registered in the prescribed manner, and (or) the name of the manufacturer;

— name of the product and its brand with the addition of the letter «M» for a fraction -12+2 mm;

— the batch number;

the actual Brinell hardness number;

— number packaging unit of the party;

— number of packing units in the batch;

— the net weight of the product;

— date of issue;

— the designation of this standard;

other data at the request of the consumer.

4.3 Packaging

4.3.1 the titanium Sponge is packaged in containers: stainless steel welded drums according to the current normative document with a capacity of 0.25 m, with a gross mass not exceeding 400 kg or containers according to the current normative document capacity 0,528 which m, a gross mass of not more than 900 kg.

By agreement of the parties set different type and capacity containers.

4.3.1.1 customer’s request welded steel barrel can be sealed and filled with argon.

4.3.2 Spongy titanium, designed for long-term storage, pack into steel welded barrels.

4.3.2.1 When packing for prolonged storage in welded steel barrels before loading of titanium sponge to the inside of the barrel lay the bag insert according to GOST 19360 polyethylene film according to GOST 10354 with frost resistance temperature of minus 70 °C. After packing and sealing the barrels vacuum fill to excess pressure of argon according to GOST 10157. Sealing, evacuation and filling with argon is carried out in accordance with established requirements.

4.3.2.2 Lack of excessive pressure at the consumer in a steel barrel is not a rejection symptom.

4.3.3 Containers from titanium sponge must be returned to the enterprise-the consumer, in accordance with established requirements and supply agreement.

5 safety Requirements and environmental protection

5.1 titanium Sponge is biodegradable and environmentally friendly material.

5.2 When using spongy titanium should be guided by the rules of safety in the production of titanium sponge and titanium powders, approved in the established procedure.

5.3 When working with spongy titanium is prohibited to use open flame and contact of titanium sponge from sources of heat.

5.4 commercial fraction of titanium sponge specified in 4.1.2, do not form a threat of aerospace and are not explosive.

5.5 Sponge titanium radiation safe.

6 acceptance Rules

6.1 the titanium Sponge take parties. The party should consist of a metal of the same brand and same faction and to be furnished by a single document containing:

— trademark and (or) the name of the manufacturer;

— name of the product, its brand, and the fraction;

— the batch number;

— number of packing units in the batch;

the weight of the party;

— date of issue;

— mass fraction of regulated contaminants in the party (except carbon, silicon, and Nickel) and Brinell hardness number for the respective brand on table 1;

— the designation of this standard.

6.1.1 At the request of the consumer of titanium sponge are indicative of the actual hardness and mass fraction of impurities, and other data.

6.2 the Mass of the party must be from 250 to 5000 kg.

By agreement with the consumer mass party can have a different meaning.

6.3 To check the quality of titanium sponge to the requirements of this standard of the party sampled.

Sampling conducted by the manufacturer.

6.3.1 Selection of combined samples from the batches of titanium sponge in the form of lumps and briquettes, getting average, of laboratory and analytical samples is carried out according to GOST 23780.

6.3.2 Laboratory sample selected by the manufacturer, at the request of the consumer direct to the consumer, the first packing unit of the party.

6.4 Mass fraction of the impurities in the titanium sponge stamps TG-TV and impurities of Nickel, silicon and carbon in spongy titanium other grades are guaranteed by the production technology and are determined periodically, but not less than every twentieth of the party and at the request of the consumer.

6.5 In spongy titanium (except for the brand TG-TV) at customer’s request, determine the fractional composition and the mass fraction of non-regulated contaminants: hydrogen, magnesium, aluminum, vanadium, chromium, manganese, copper, zirconium, niobium, molybdenum, palladium, tin, tantalum, tungsten. The amount of party with additional monitoring is negotiated with the commercial allowances.

6.6 Absence of foreign objects, mechanical impurities and lumps of titanium sponge with defects determined in spongy titanium, selected according to GOST 23780.

6.7 Upon receipt of unsatisfactory results for at least one of the quality indicators it conduct testing of samples for repeated and redundant definitions. In case of dispute, the test is performed at twice the sample taken from the same batch. The result at twice the sample apply to the entire party.

7 control Methods

7.1 determination of the mass fraction of impurities is regulated by the requirements of this standard, is carried out in accordance with GOST 9853.1 — 9853.5 GOST, GOST 9853.9, 9853.22 GOST — GOST 9853.24, hardness — GOST 30311, determination of fractional composition by GOST 23782.

7.2 determination of the mass fraction of unregulated contaminants is carried out according to GOST 9853.7, 9853.10 GOST — GOST 9853.21.

7.3 it is allowed to carry out manufacturing control of titanium sponge other methods of equal accuracy standardized.

In case of disagreement the determination of mass fractions of impurities, the hardness of the Brinell and the fractional composition is administered only by state standards specified in 7.1.

7.4 the Lack of pieces of titanium sponge with defects determine visually without the use of technical means.

Pieces of titanium sponge with defects compared to the samples approved in the established procedure, described in Appendix A.

Visual inspection is carried out at illumination in the room not less than 300 Lux.

8 Transportation and storage

8.1 Transport of titanium sponge produced by rail in covered wagons in carload shipments.

Transportation of titanium sponge sea transport must be carried out in accordance with the rules of safety of Maritime transport of General cargo.

It is admitted to transport other types of transport in accordance with cargo carriage regulations applicable to the transport of the species and guaranteeing the safety of titanium sponge.

8.2 the titanium Sponge is stored in unheated areas.

9 manufacturer’s Warranty

9.1 the Manufacturer guarantees the conformity of titanium sponge to the requirements of the present standard if the purchaser respects the conditions for transport and storage.

The warranty period long-term storage of titanium sponge, Packed in welded steel barrels, in accordance with 4.3.2.1 — 7 years from date of manufacture.

Annex a (mandatory). Description of samples of titanium sponge with defects

APPENDIX A
(required)

Sample N 1 — burnt pieces of titanium sponge.

Sample No. 2 — oxidized pieces of titanium sponge with a distinct dark yellow and blue colors of tint.

Sample N 2−1 the pieces oxidized and the nitrogen-rich titanium sponge with traces from dark yellow to light yellow color.

Sample N 3 — pieces of titanium sponge with a touch of chlorides.

Sample N 4 — pieces of titanium sponge with slurry.

Sample N — 5 chunks of titanium sponge fortified with iron and associated elements. Have a high density compared to conventional spongy titanium.

Notes

1 Samples agreed by consumer and manufacturer.

2 the enrichment of understand the high content of impurities, leading to the appearance of painting on pieces of titanium sponge. In the event of assumption of a high content of nitrogen and iron in separate pieces of spongy titanium, these pieces subjected to analysis. Permissible deviations are the mass fraction of nitrogen not more than 0.2% iron not more than 0.6%.

3 In the case of a dispute, the pieces of titanium sponge with defects subjected to spectrophotometric analysis and the local study of surface contamination according to the method agreed upon by manufacturer and user.