HN77TJUR strip, sheet

Equivalent

Grade	analogue	W. Nr.	Aisi Uns	En	Order
XN77TYUR	EI437B	2.4952	N07080	NiCr20TiAl	Buy from stock, view availability
HN77TYURB	EI437A				Buy from stock, view availability
XN77TYURU	EI437BU				Buy from stock, view availability

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«Auremo» is a supplier of heat-resisting mill-products to countries of Eastern and Central Europe. An experience of our company allows you easily buy strip, sheet Nimonic 80A. They are compliant with GOST and International Standards of quality. A wide selection of products is presented in catalog. HN77TJUR (Nimonic 80A) strip, sheet are always in stock. HN77TJUR strip, sheet price depends on order quantity and additional conditions of supply. HN77TJUR strip, sheet price is privileged for wholesale customers. We are working with experienced managers who can help to make purchases by wholesale. We have the best price-quality ratio. We invite you to a partnership. Buy HN77TJUR strip, sheet in a moment! There is an affordable price from HN77TJUR strip, sheet supplier.

Main properties

Strip made of this alloy is non-magnetic. It possesses heat resistance, corrosive resistance. It is meant to be used in aggressive environment in a temperature range of 100−850°C. Its oxidation rate constitutes 0,03 mm/h in free atmosphere at a t° of 800 °C. Such a strip has significant short term limit of strength (500 MPa). Its flow limit is 180 MPa; imperceptible elongation at break is 30%. Strip is fairly workable and can be mechanically treated. It is a durable, reliable, aesthetic steel. Due to this, it is much-in-demand in spheres of national economy. This malleable strip possesses resistance in oxidising atmosphere, in environment of ammonia, nitrogen. Its surface does not oxidize at durable exploitation or at a high temperature. Its main demerit is that a wire does not have a stability in atmosphere of sulphur and sulphur compounds.

Manufacture

Alloy is smelted in open electric furnaces. It provides a minimal content of unnecessary residual elements. Percentage composition is compliant with GOST 5632−72. Flat products are released in the form of hot-rolled and cold-rolled sheets or strips. There should be done thermohardening of strip (t° = about 1100°C) and further cooling in water or in air for strength increasing. Age-hardening performs at a temperature of 700−750°C during 5−16 hours (depending on type of mill-products). Such heat treatment conduces to normalization of inherent stress in alloy and to increasing of strength characteristics of details.

Percentage composition of alloy

Ni	Ti	Cr	Al	Si	Fe	Mn	Ce	C	P	Pb	B	S
70- 77.4	2.4−2.8	19−22	0.6−1.0	≤0.6	≤1	≤0.4	≤0.02	≤0.07	≤0.015	≤0.01	≤0.01	≤0.007

It is not cheap because its main component — nickel is expensive.

Strength properties t° 20°С:

— short resistance to rupture = 950 MPa;

— flow limit = 620 MPa;

— ultimate elongation at break = up to 20%;

— ultimate contraction = not higher than 15%;

— hardness after thermohardening according to Brinnel = 255 — 321 MPa;

Mechanical properties at t° of 100°С:

— lineal expansion coefficient α = 12,67x10^-6/°C;

— density — 8,18 g/cm³;

— heating capacity 13,9 V/(m-deg);

— electrical resistivity- 1,247 Ohm-mm²/m.