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40HNU-VI - эп793-VI ribbon, round, alloy

40HNU-VI - эп793-VI ribbon, round, alloy


The alloy grade 40ХНЮ-ВИ (40ХНЮ, Э793, ЭП793-ВИ) belongs to the group of precision non-magnetic alloys used in the manufacture of special-purpose parts, for example, non-magnetic corrosion-resistant bearings.


Today, the main properties of the dispersion-hardening alloy 40ХНЮ-VI, as well as the effect of the successive heat treatment regimes on the structural-phase state, on the mechanical properties, including the dimensional stability properties that determine the preservation and obtaining of high accuracy of the gas bearing parts, are well known. In the process of determining the optimal quenching conditions for the 40ХНЮ-VI alloy, the correlation of dimensional stability and aging conditions was revealed. For example, the precision limit of elasticity is σ 10 -4. The limit of aging temperatures of 400−550 ° С is also determined, which is promising for obtaining high values of the precision maximum of elasticity while maintaining the required level of plasticity.


The alloy 40ХНЮ-ВИ differs by rare physical and mechanical qualities (magnetic, elastic, thermal, electric). The properties of precision alloys are due to the accuracy of chem. Composition, careful manufacturing and processing, no impurities. This category refers to high-alloy alloys. They are made on the basis of iron, alloyed with nickel, copper, niobium, cobalt.

Bounded welding — welding is possible during heating up to the tempo. 100−120 oC and thermal further processing
Compostable — In order to obtain welded quality joints, it is necessary to perform additional operations: during welding, heating to temper. 200−300 ° C, heat treatment (annealing) after welding.
Welded without restrictions — welding is carried out without thermal further processing and preheating.

The chemical composition of 40ХНЮ-ВИ, in percents.

Ni P Mn S Fe Si C Mo
Up to 0.02 19 -21 15 -17 Up to 0.02 10.74 -18.73 1.8 -2.2 Up to 0.5 39 -41

Mechanical characteristics at a temperature of 20 ° C of the alloy 40ХНЮ-ВИ.

Assortment The size Thermoobre. For example. ST Y D5 Sv KCU
- Mm - - MPa % % MPa KJ / m2

Hardening1100 — 1150oC, oil

Aging 400 — 450oC, 4h,

  2400−3000     3200−3800  
Hardened tapes 0.1 — 2 Aging 450 — 550oC, 2 — 4h,         1670  
Alloy Steel Wire             2450−2650  
Mechanical characteristics:
— Strength of short-term, in [MPa] Sv
— Yield limit (proportionality limit) for deformation of residual, in [MPa] ST
— at break, the relative elongation, in [%] D5
— the restriction is relative, in [%] Y
— Impact viscosity, in [kJ / m2] KCU
— Brinell hardness, in [MPa] HB
The physical characteristics of this grade of alloy:
— the first kind of modulus of elasticity, [MPa] — E
— Heat capacity of the material (or coefficient of heat conductivity), in [W / (m · deg)] -l
— The temperature required to obtain these properties, [Grad] — T
— linear coefficient. Temper. Expansion in [1 / Grad] (temp. Interval 20 ° C), -a
— electrical resistivity, in [Ohm · m] -R
— The density of this material, [kg / m3] -r
— Specific heat of the given material in [J / (kg · deg)] (temp. Interval 20 ° C) -C

Magnetic characteristics:

— force coercive (not higher), in [A / m] Hc
— permeability is magnetic (not higher), in [MH / m] Umax
— loss of specific (not higher) frequency 50 Hz, magnetic induction 1.0 T, in [W / kg] P1.0 / 50
— Magnetic Tl induction, the magnetic field strength is not less than 100, in a magnetic field, in [A / m] B100

Buy at a bargain price

The assortment of manufactured products from the alloy 40ХНЮ-ВИ, presented in LLC «Avek Global» can satisfy almost any consumer. This alloy belongs to a popular group of metal products, due to its real cost and variety of produced options. The quality of metal products is guaranteed by the absolute observance of all production technological standards. In the absence of the required type of product in the basic version, as well as in case of need of another product variant, we can produce their non-standard sizes by individual order.