Alloy OT4-0
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ОТ4-0 |
| Designation GOST Latin |
OT4-0 |
| Transliteration |
OT4-0 |
| The chemical elements |
SnTe4-0 |
Description
Alloy OT4−0 is used: for the manufacture of semi-finished products (sheets, strips, foils, strips, plates, bars, rods, profiles, tubes, forgings and forged blanks) by the strain, and bars; parts of complex configuration, continuously operating at temperatures of +300 to 350 °C and intermittent temperatures of +500−600 °C. the Alloy is used in parts which require high workability in cold forging.
Note
Titanium alloy with good corrosion resistance. Alloy OT4−0 low strength and high processability. Manganese improves the workability during hot working by pressure. Alloy is a pseudo — a class with a small number of b-phase. Which cannot be thermally hardened. Alloy well deformed in the hot and cold States, permits forging at room temperature; good weld all types of welding.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 19807-91, OST 1 90000-70, OST 1 90013-81, OST 4.021.009-92 |
| Sheets and stripes |
В53 |
GOST 22178-76, GOST 23755-79, OST 1 90218-76, OST 1 90024-94, TU 1-5-244-76 |
| Pipes from non-ferrous metals and alloys |
В64 |
GOST 24890-81, OST 1 90050-72, OST 1 90051-79, OST 1 90065-72, OST 1 90050-92 |
| Bars |
В55 |
GOST 26492-85, OST 1 92020-82, OST 1 90266-86, OST 1 90173-75, OST 1 90107-73, OST 1 90006-86, OST 4.021.025-92, OST 4.021.026-92 |
| Tapes |
В54 |
OST 1 90027-71 |
| Sectional and shaped rolling |
В52 |
OST 1 92051-76 |
Chemical composition
| Standard |
C |
Mn |
Si |
Fe |
N |
Al |
Ti |
O |
Zr |
H |
| OST 1 90013-81 |
≤0.1 |
0.5-1.3 |
≤0.12 |
≤0.3 |
≤0.05 |
0.4-1.4 |
The rest |
≤0.15 |
≤0.3 |
≤0.012 |
Ti is the basis.
According to GOST 19807-91 and OST 1 90013-81 the total content of other impurities is ≤0.30%. The mass fraction of hydrogen is indicated for ingots. The mass fraction of copper and nickel should not be more than 0.10% (in total), including nickel not more than 0.08%.
Mechanical characteristics
| Section, mm |
σB, MPa |
d5, % |
d |
y, % |
kJ/m2, кДж/м2 |
Brinell hardness number, MPa |
| Sheet metal in delivery condition after annealing (samples across the direction of rolling) |
| 0.3-0.4 |
490-638 |
≥25 |
- |
- |
- |
- |
| 0.4-1.8 |
490-638 |
≥30 |
- |
- |
- |
- |
| 1.8-6 |
490-638 |
≥25 |
- |
- |
- |
- |
| 6-10.5 |
490-638 |
≥20 |
- |
- |
- |
- |
| Plate in the delivery condition according to GOST 23755-79. Without heat treatment (samples transverse) |
| 11-20 |
490-635 |
- |
≥12 |
≥18 |
- |
- |
| 20-60 |
490-635 |
- |
≥11 |
≥18 |
- |
- |
| 60-150 |
490-635 |
- |
≥10 |
≥18 |
- |
- |
| Plate on OST 1 90024-94 in the delivery condition. Samples heat-treated (transverse) |
| 11-20 |
490-635 |
- |
≥12 |
≥18 |
≥490 |
- |
| 20-60 |
490-635 |
- |
≥11 |
≥18 |
≥490 |
- |
| 60-150 |
490-635 |
- |
≥10 |
≥18 |
≥490 |
- |
| Forgings weighing up to 200 kg after annealing (indicated by the direction of fillet samples) |
| 101-250 |
441-638 |
≥17 |
- |
≥30 |
≥490 |
156-207 |
| 100 |
490-638 |
≥20 |
- |
≥45 |
≥686 |
156-207 |
| Bars hot rolled autogenie ordinary quality GOST 26492-85 (longitudinal samples) |
| 10-12 |
≥440 |
≥15 |
- |
≥35 |
- |
- |
| 100-150 |
≥440 |
≥13 |
- |
≥30 |
≥392 |
- |
| 12-100 |
≥440 |
≥15 |
- |
≥35 |
≥490 |
- |
| Bars hot rolled autogenie high-quality according to GOST 26492-85 (longitudinal samples) |
| 10-12 |
490-635 |
≥20 |
- |
≥40 |
- |
- |
| 100-150 |
440-635 |
≥20 |
- |
≥32 |
≥490 |
- |
| 12-100 |
490-635 |
≥20 |
- |
≥40 |
≥686 |
- |
| Forged square bars and round after annealing (indicated by the direction of fillet samples) |
| 140-250 |
441-638 |
≥17 |
- |
≥30 |
≥490 |
156-207 |
|
461-638 |
≥17 |
- |
≥35 |
≥588 |
156-207 |
| Round bars hot rolled autogenie as supplied by OST 4.021.025-92, OST 4.021.026-92 |
| ≥110 |
460-635 |
≥17 |
- |
≥35 |
≥588 |
156-207 |
| 65-100 |
490-635 |
≥20 |
- |
≥40 |
≥686 |
156-207 |
| 10-60 |
≥440 |
≥15 |
- |
≥35 |
≥490 |
156-207 |
| The pressed bars for OST 1 92020-82. Annealing. The longitudinal samples |
| 100 |
490-673 |
- |
≥20 |
≥45 |
≥686 |
- |
| Tubes rolled and drawn, otoczenie etched surface with an outer diameter of 6.0-62,0 mm; welded without heat treatment the outer diameter of 25.0-102,0 mm; cold drawn autogenie an outer diameter of 8,0-30,0 mm |
|
500-650 |
≥15 |
- |
- |
- |
- |
| Welded pipe groups A (annealed) and B (without t/o) in the delivery state according to GOST 24890-81 (samples, in cross-section is specified outside diameter) |
| 25-102 |
490-637 |
≥15 |
- |
- |
- |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
Technological properties
| Name |
The value |
| Weldability |
Without restrictions. |
