A wire, a rod, a bar, a sheet, a tube made of titanium gost 3M
Characteristics of titanium gost 3M alloy
|Alloy grade||Titanium gost 3M|
|Alloy classification||Titanium deformable alloy|
|Industrial usage||manufacture of rolled sections, parts of special technique, manufacture of ingots, semi-fabricates.|
Percentage composition according to GOST 19207−91
|≤0,04||≤ 0,3||3.5 — 5||93.89 — 96.2||≤0.1||≤0,25||≤0,15||≤0,12||total 0,3|
Note: a basis is titanium. First of all, this alloy is very consistent, paramagnetic. It is easy to weld. As other titanium alloys, it differs with a unique corrosion resistance that is very important in technological industries. Alloying increases strength characteristics and corrosion resistance of titanium 2−3 times as much.
Mechanical characteristcs (temperature is 20°С).
|Range of sizes||Size||KCU||y||Heat treatment.||d5||sT||sv|
|Wire, GOST 27265−87||Condition of supply||13||580−735|
sv — Short-time strength limit
d5 — Elongation on failure
Physical characteristics of titanium gost 3M
|E 10- 5||T||l||a 10 6||C||R 10 9||r|
Description of mechanical characteristics
|Short resistance to rupture [MPa]||sv|
|Impact hardness [ kJ/m2]||KCU|
|Flow limit at permanent change of form (proportional limit) [MPa]||sT|
|Brinell hardness [MPa]||HB|
|Contraction ratio (%)||y|
Physical characteristics of titanium alloy gost 3M
|Temperature at which are obtained actual characteristics:||20°С|
|Lineal expansion coefficient α x 106 at 100 °C [1/ °С]||8.2|
|Elasticity module of 1 sort Е [MPa] x 10-5||1.12|
|Elongation on failure d5 %||13|
|Short-term strength limit sв [MPa]||580−735|
|Specific electric resistance Оhm-mm2/m||1.6|
|weldable without limits||— a welding is done without previous heating of parts and without final heat treatment. However, high affinity of hot titanium to oxygen and nitrogen requires inert gas protection of not only a welding zone, but a reverse side of a seam, and all those zones of metal that are heated to 400 degrees as well;|
|limitedly weldable||— qualitative welding requires pre-heating of parts to a temperature of 100−120°C and a final heat treatment;|
|hardly weldable||— in order to obtain a qualitative welded joints, it is necessary to perform the following operations: to heat parts up to 200−300°C before welding; to do a heat treatment (annealing) after welding;|
Extraordinary characteristics of titanium are of the utmost interest in modern industries where are required high strength-to-density ratio, heat resistance, corrosive resistance. It is popular in food, chemical industries, in aviation, shipbuilding, spacecraft building, rocket engineering, transport machine building.
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