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ВТ18, ВТ18у circle, rod, sheet, wire

ВТ18, ВТ18у circle, rod, sheet, wire

Company Avecglobal sells at a reasonable price from manufacturers a variety of rolled products — sheet, wire, rod or circle — from titanium alloys VT18 and VT18u. The supplier is guaranteed timely delivery of products to any address specified by the consumer.

Composition and application

These alloys refer to high-strength titanium alloys used after heat treatment. Both alloys belong to the category of pseudo-α-titanium alloys, but BT18U differs from BT18 in that it contains less aluminum and zirconium, but is additionally doped with tin, which increases the fluidity and other casting characteristics of the material. This circumstance widens the limits of the use of the BT18u alloy, therefore, not only standard rolling profiles but also thick plates are obtained from it. For all other parameters of applicability and processing technology, alloys VT18 and VT18u are considered identical.

The presence of aluminum and zirconium in the composition of the titanium alloy grade VT18 increases the resistance of high-temperature creep, which gives the material, rolled and forged its long-term strength in the temperature range of 500… 600 ° C. This is one of the most heat resistant titanium alloys. At the same time, the subsequent plastic deformation of the material is subject to restrictions, and therefore more often subjected to processing operations on metal cutting machines. The boundary temperature of short-term use of parts obtained from alloys VT18 and VT18u, should not exceed 750… 800 0 С.

Areas of application are working parts of turbines and gas turbine engines, power equipment housings, all-rolled and welded rings.

The chemical composition of the alloy VT18, which meets the technical requirements of OST 1−90013−81, is given in the table (numerical data — in percent, titanium — base):

Fe C Si Mo N (bound) Nb Al Zr

O

(connected)

H

(connected)

Impurities
Not more than 0.15 Not more than 0.1 0.05 — 0.18 0.2 — 1 Not more than 0.05 0.5 — 1.5 7.2 — 8.2 10 — 12 Not more than 0.14 Not more than 0.015 Up to 0.3

Buy at economical prices from the manufacturer sheet and bulk rolled metal (sheet, rod, wire and circle), made of alloys brands VT18 and VT18u, offers the company AvekGlob. The supplier organizes guaranteed delivery of products to any point set by the customer.

Properties

The main physical characteristics of the alloy VT18:

Density, kg / m 3 — 4650;

Melting point, 0 С — 1380;

Coefficient of thermal expansion, μm / deg — 15;

Coefficient of thermal conductivity, W / mgrad — 67.4;

Specific heat capacity, J / kggrad — 455.

The main mechanical characteristics of the alloy VT18:

The limit of temporary resistance, MPa — 680;

Yield strength, MPa — 230;

Relative elongation,% — 12… 18;

Hardness according to Brinell, HB, not more — 341.

Weldability of the alloy is good.

Company Avecglob offers to purchase at affordable prices from the manufacturer a diverse range of rolled products (sheet, wire, rod and circle), which is produced from deformable titanium alloys of VT18 and VT18u grades. The supplier immediately delivers the products to any point agreed by the customer.