Alloy 1933
Designation
| Name |
The value |
| Designation GOST Cyrillic |
1933 |
| Designation GOST Latin |
1933 |
| Transliteration |
1933 |
| The chemical elements |
1933 |
Description
Alloy 1933 applies: for making the most responsible power structures of the aircraft (parts, power set, fittings and frames). Due to the high manufacturability of alloy 1933 when casting, pressure treatment and heat treatment in mass production manufacture of forged and extruded products in a wide range of sizes — weight up to 2000 kg and with a thickness up to 400 mm; power details of the products of aviation technology.
Alloy 1933 in States T2 and T3 are widely used in modern aircraft An-148, SSJ in the form of large forgings, die forgings and extruded strips for massive elements of the internal power frame.
Note
High strength forging alloy.
The developed modes multifonctionnel quenching in the polymer environment and the three-step aging T123 large forgings of alloy 1933, providing an improved set of strength and resource characteristics, combined with reduced 1.5−3 times the level of the quenching stresses, which can significantly reduce the leashes and warping of parts during machining, to reduce design weight by 10−15% and extend the operational life of the structure by 1.5 times.
Quotas the advantages of alloy 1933 in States Т122 and T123 before the domestic serial (1933-T2) and foreign alloys are: strength characteristics — 6−12%, the fracture toughness is 15−50%, for low cycle fatigue — 35−80%.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
OST 1 90026-80, TU 1-802-451-2007 |
| Metal forming. Forgings |
В03 |
OST 1 90073-85 |
| Bars |
В55 |
OST 1 90395-91 |
Chemical composition
| Standard |
Mn |
Cr |
Si |
Fe |
Cu |
Al |
Ti |
Zn |
Zr |
Mg |
| OST 1 90026-80 |
≤0.1 |
≤0.05 |
≤0.1 |
≤0.15 |
0.8-1.2 |
The rest |
≤0.05 |
6.2-7 |
0.1-0.18 |
1.6-2.2 |
Al is the base.
According to OST 1 90026-80, the chemical composition is given for the 1933 alloy of improved purity. The total content of other impurities is ≤ 0.10%. The content of each other impurity is ≤ 0.050%.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
Brinell hardness number, MPa |
| Forgings for OST 1 90073-85. Mode T2: Quenching + Artificial aging (cross-sectional view of the workpiece, the cutting direction of the samples) |
| ≤150 |
420-500 |
460-540 |
≥4 |
≥120 |
| 150-200 |
420-500 |
460-540 |
≥3.5 |
≥120 |
| ≤200 |
430-520 |
480-570 |
≥6 |
≥120 |
| ≤150 |
430-510 |
470-550 |
≥5 |
≥120 |
| 150-200 |
430-510 |
470-550 |
≥4 |
≥120 |
| ≤150 |
440-530 |
490-580 |
≥7 |
≥120 |
| 150-200 |
430-520 |
480-570 |
≥7 |
≥120 |
| Forgings for OST 1 90073-85. Mode T3: Quenching + Artificial aging (cross-sectional view of the workpiece, the cutting direction of the samples) |
| ≤150 |
360-460 |
420-520 |
≥5 |
≥110 |
| 150-200 |
360-460 |
420-520 |
≥4 |
≥110 |
| ≤200 |
370-470 |
430-520 |
≥7 |
≥110 |
| ≤150 |
370-470 |
430-530 |
≥6 |
≥110 |
| 150-200 |
370-470 |
430-530 |
≥5 |
≥110 |
| ≤200 |
380-480 |
440-530 |
≥8 |
≥110 |
| Forgings for power details of the products of aviation technology on the other 1-802-451-2007. Quenching with 465-475 °C (extract 50-120 minutes, depending on thickness) in water at a temperature of 25-45 °C (aging in the hardening bath for at least 15 min) + Aging (Т2Н): 1st stage aging at 105-115 °C (extract 10-12 hours), the heating temperature, 1 degree to 2 degrees at a speed of 10-15 °C/h + 2 stage aging at 165-175 °C (delay of 6-10 h) (in the delivery condition specified cut direction samples) |
| ≤90 |
410-480 |
460-530 |
≥2.5 |
≥120 |
| 90-150 |
390-470 |
440-520 |
≥2 |
≥120 |
| ≤90 |
420-500 |
460-540 |
≥4 |
≥120 |
| 90-150 |
400-490 |
450-530 |
≥4 |
≥120 |
| ≤90 |
430-520 |
480-570 |
≥6 |
≥120 |
| 90-150 |
410-510 |
460-560 |
≥6 |
≥120 |
| Forgings for power details of the products of aviation technology on the other 1-802-451-2007. Quenching with 465-475 °C (extract 50-120 minutes, depending on thickness) in water at a temperature of 25-45 °C (aging in the hardening bath for at least 15 min) + Aging (Т3Н): 1st stage aging at 105-115 °C (delay of 6-10 h), firing temperature, 1 degree to 2 degrees at a speed of 10-15 °C/h + 2 stage aging at 175-185 °C (extract 5-10 h) (in the delivery condition specified cut direction samples) |
| ≤90 |
350-440 |
410-590 |
≥3 |
≥110 |
| 90-150 |
320-420 |
400-480 |
≥2.5 |
≥110 |
| ≤90 |
360-460 |
420-520 |
≥5 |
≥110 |
| 90-150 |
320-430 |
410-520 |
≥4 |
≥110 |
| ≤90 |
370-470 |
430-520 |
≥7 |
≥110 |
| 90-150 |
330-440 |
410-520 |
≥7 |
≥110 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
