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Tape HN77TYUR - EI437BU

Tape HN77TYUR - EI437BU

The basic qualities

Tape HN77TYUR not magnetic and has heat resistance, is non-corrosive, designed to work in aggressive environments at t° 700 — 850 °C, the rate of oxidation in the relaxed atmosphere of the air is 0.03 mm/year at ° 800 °C. This tape at 20 °C has a significant limit short-term strength of 500 MPa and 180 MPa — yield point and low elongation at break — 30%.

Tape rather technological, machinable. It is durable, reliable and aesthetically pleasing, from-for what in demand in many sectors of the economy. It is ductile and resistant to an oxidizing atmosphere, to an atmosphere of ammonia and nitrogen. Its surface is not oxidized during long-term operation and high temperature. Its main drawback is that it does not have stability in the atmosphere of sulfur compounds and sulfur. The tape has a high cost, because of the high cost of the main components — Nickel.

The chemical composition of the alloy, in percent.
Ni Ti Cr Al Si Fe Mn Ce With P Pb B S
70 — 77,4 2.4 to 2.8 19−22 06−1,0 to 0.6 to 1 to 0.4 0,02 0,07 0,015 0,01 0,01 0,007


The alloy is melted in open electric furnaces, which ensures a minimum content of impurities. Percentage composition is regulated by GOST 5632−72. Flat rolled comes in the form of hot rolled and cold rolled sheets and strips. At increased requirements to the material is hardening the strip at a temperature of about 1100 °C with subsequent cooling in water or air. Aging occurs at a temperature of 700 — 750 °C for 5−16 hours depending on the thickness of the tape. This heat treatment promotes the normalization of internal stresses in the alloy and increasing the strength.

Quality tape mark HN77TYUR at t° 20°C:

— The ultimate short-term strength = 950 MPa;

— yield strength of 620 MPa.;

max. elongation at break — 20%;

— max. contraction is no higher than 15%;

— hardness after hardening Brinell — 255 — 321 MPa.

Mechanical properties at temperatures up to 100°C:

the linear expansion coefficient of 12.67x10-6/°C;

— density of 8.18 g/cm3;

— heat capacity of 13.9 W/(m·deg);

the resistivity of 1,247, Mhmm2/m.

Buy at best price

LLC «AVEK global» implements of precision alloys at a bargain price. It is formed under the influence of world prices for metal without the inclusion of additional costs. Tape HN77TYUR belongs to the popular group of steel products due to its real value and variety of output options. The face of our company determines the high level of service and excellent quality products. On the website LLC «AVEK global» reflects the most current information. Our managers are always happy to help answer questions. Implementation of orders takes minimal time. Deliveries go directly from the warehouse. This gives consumers significant savings on inventory and facilities. In the absence of the basic version, the required version of the products, we can produce them according to individual order.