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KHN55VMTKJU - ЭИ929 sheet, round, wire
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Heat-resistant alloy grade KHN55VMTKJU (or ЭИ929-VD, ЭИ929, KHN55VMTKJU-VD, belonging to the group of alloys with a limited lifetime, used in the manufacture of turbine blades and other parts for operation at temperatures above 950 °C. Initially, the process of intensive scaling is carried out at a temperature of 1050 °C. the alloy KHN55VMTKJU hardness after quenching, aging is HB 10 -1 = 285 — 341МПа. Manufactured from this alloy rod is made on the basis GOST 23705−79.
The main requirements to the material for the manufacture of turbine blades are subject to the latest developments of the designs of engines, a continuous increase in ductility, resistance to low cycle, thermal fatigue, heat resistance and resistance to gas environments. The material in modern engines, turbine blades must have a high resistance to destruction by heat, low cycle fatigue, which today is the main form of destruction. To worsen the danger of destruction capable of surface reactions due to the weakening of grain boundaries and gas corrosion.
Chemical composition of alloy grades KHN55VMTKJU, % GOST 5632−72.
| Cr | P | W | Ti | Co | Mn | Si | C | S | Mo | B | V | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9 — 12 | to 0.015 | 4.5 — 6.5 | 1.4 — 2 | 12 — 16 | to 0.5 | to 0.5 | 0.04 — 0.1 | 0.01 | 4 — 6 | up to 0.02 | 0.2 — 0.8 | 3.6 — 4.5 |
| Welding KHN55VMTKJU. | |||
|---|---|---|---|
| weldability limited | — welding is possible in the process of heating up to temp. 100−120? C and further thermal treatment | ||
| konovalivka | in order to obtain quality welded joints, it is necessary to perform additional operations: during welding heating up to temp. 200−300°C, heat treatment (annealing) after welding. | ||
| Welded without any restrictions | — welding is carried out without further heat treatment and pre-heating. | ||
Physical characteristics of the alloy grade KHN55VMTKJU.
| kg/m3 | Grad | MPa | W/(m·deg) | 1/Deg | Ohm·m | J/(kg·deg) |
|---|---|---|---|---|---|---|
| r | T | E 10 — 5 | l | a 10 6 | R 10 9 | C |
| 900 | 15.5 | |||||
| 800 | 14.5 | |||||
| 700 | 14.1 | |||||
| 600 | 13.8 | |||||
| 500 | 13.4 | |||||
| 400 | 12.8 | |||||
| 300 | 12.4 | |||||
| 200 | 11.7 | |||||
| 100 | 10.8 | |||||
| 20 |
| Physical characteristics of this brand of alloy: | |
|---|---|
| — 1st kind of modulus of elasticity, [MPa] | — E |
| — The heat capacity of the material (or the ratio of teploprovodna.), in [W/(m·deg)] | -l |
| — The temperature required to obtain these properties, [Grad] | — T |
| — linear coefficient. temp. extensions to [1/Deg] (temp. the interval 20o), | -a |
| — electrical resistivity, [Ohm·m] | -R |
| — The density of this material, [kg/m3] | -r |
| — the specific heat capacity of material [j/(kg·deg)] (temp. the interval 20 ° C) | -C |
Magnetic characteristics:
| the coercive force (not more than) [A/m ] | Hc |
|---|---|
| the magnetic permeability (not above) [ MH/m ] | Umax |
| — specific losses (no higher) frequency 50 Hz, magnetic induction of 1.0 T [ W/kg ] | P1.0/50 |
| — T magnetic induction intensity of a magnetic field of not less than 100, in a magnetic field [ A/m ] | B100 |
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The company «AVEK global», producing a large range of products from alloy KHN55VMTKJU ready to satisfy the most sophisticated demands of consumers. The widespread use of products that are made from this alloy due to the high quality, huge variety and affordable cost. Absolute control of all stages of the technological process allows the company «AVEK global» to produce high quality metal products. The introduction of modern technologies enables us a base range, which are always in stock at the warehouses of the company, accept orders for manufacturing of metal products for individual orders, even in the case of the need of quality metal products custom options and sizes.