Ost1 90107-73. Forged bars made of titanium alloys.
Are you interested in the industry standard OST 1.90107−73 concerning forged bars made of titanium and titanium alloys from the supplier AvecGlob? Here you will find interesting information on this topic.
Application area
The technical conditions of this industry standard apply to forged bars of titanium and its alloys of grades ВТ1−00, ВТ1−0, ОТ4−0, ОТ4−1, ОТ4, ОТ4−2, ВТ4, BT5−1, ВТ5, ВТ6С, ВТ6, ВТЗ- 1, ВТ8, ВТ9, ВТ14, ВТ20 and ВТ22, which are intended for subsequent plastic deformation. Instead of forged rods, it is allowed to supply rolled bars of similar dimensions meeting the requirements of this industry standard.
The bars supplied by OST 1.90107−73 are not recommended for machining, and, if necessary, use forgings supplied by OST1 90000−70 and TU1−92−2-72 for this purpose.
Assortment
The dimensions of the bars and the maximum deviations from them must satisfy the requirements of the table given below:
| Diameter or side of a square, mm | Limit deviations by diameter or side of square, mm |
| 140 | +4.0 |
| -3.0 | |
| 150 | ± 5.0 |
| 160 | |
| 170 | |
| 180 | |
| 190 | |
| 200 | |
| 210 | ± 8.0 |
| 220 | |
| 230 | |
| 240 | |
| 250 |
The bars are supplied in a machined condition with a maximum deviation of +2.5 mm. The bars are supplied in a dimensional or multiple length in the range from 0.5 to 2.0 m. The maximum deviations along the length of the rods are established:
— at a length of rods up to 1000 mm — + 70 mm,
— with the length of the st. 1000 mm — + 100 mm.
Supplier — AvekGlob Company — offers forged prices from the manufacturer forged bars made of titanium and titanium alloys and meet the technical requirements of OST 1.90107−73. The supplier guarantees the timely delivery of products to any address specified by the consumer
Technical requirements
Rods are supplied without heat treatment or in a machined condition. The chemical composition of alloys must satisfy the requirements of OST1 90013−81. The mechanical properties of bars are given in the table
| Brand alloy | Diameter or side of a square, mm | Mechanical properties | Hardness by Brinell | |||
| temporary tensile strength, MPa | relative,% | impact strength, kgf • m / cm 2 | ||||
| elongation | contraction | |||||
| not less than | ||||||
| 1 | 2 | 3 | 4 | 5 | 6th | 7th |
| BT1−00 | Up to 150 151 to 250 |
270−450 270−450 |
21.0 19.0 |
36.0 34.0 |
6.0 6.0 |
4.9−5.5 |
| VT1−0 | Up to 150 151 to 250 |
360−550 360−550 |
17.0 15.0 |
32.5 30.0 |
5.0 5.0 |
4.7−5.2 |
| OT4 | From 140 to 250 | 650−900 | 8.5 | 20.0 | 3.5 | 3.6−4.2 |
| VT5 | From 140 to 250 | 730−950 | 6.0 | 16.0 | 5.0 | 3.4−4.0 |
| VT3−1 | From 140 to 250 | 950−1200 | 8.0 | 20.0 | 3.0 | 3.2−3.7 |
| VT9 | Up to 150 151 to 250 |
1000−1250 950−1200 |
6.0 6.0 |
14.0 14.0 |
3.0 3.0 |
3.2−3.7 |
| VT20 | From 140 to 250 | 900−1150 | 8.0 | 20.0 | 3.0 | 3.3−3.8 |
On the surface of the rods there should be no cracks or stratifications. Dents, nicks, tears, laws and risks are allowed if the depth of their deposition, as well as the depth of stripping, does not display the dimensions of the bars for the dimensional deviations. Individual single defects are allowed in an amount not exceeding 3 per 1 running. m, depth not more than 15 mm, which must be removed by a flat sweep at a ratio of the depth of stripping to a width of 1: 6.
The surface of the bars delivered after machining should be without benches and black. On the surface of the bars, transitions (risks) are possible from the change of incisors, and at the ends the bosses remaining in the cut.
In the macrostructure of the bars, cracks, delaminations, voids, filaments, metallic and nonmetallic inclusions visible to the naked eye are not allowed.
Supplier — AvekGlob Company — offers to purchase various profiles of forged bars made of titanium alloys and corresponding to the provisions of OST 1.90107−73 in the assortment. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.