Alloy 1933

Designation

Name	The value
Designation GOST Cyrillic	1933
Designation GOST Latin	1933
Transliteration	1933
By 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, and their alloys	В51	OST 1 90026-80, TU 1-802-451-2007
Processing of metals by pressure. 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	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 properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	HB, 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
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
HB	Brinell hardness number