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Characteristics of titanium rod

Date:2022-03-30 14:13:28       Number of views:

α Stability of alloy containing a certain amount α The element of phase, in equilibrium, is mainly composed of α Phase composition. α The alloy has small specific gravity, good thermal strength, good weldability and excellent corrosion resistance. The disadvantage is low strength at room temperature. It is usually used as heat-resistant and corrosion-resistant materials. α Alloys can usually be divided into complete alloys α Alloy (TA7), near α Alloy (ti-8al-1mo-1v) and with a small amount of compounds α Alloy (Ti-2.5Cu).

Titanium rod production brand

National standards: TA1, TA2, TA3, TA7, ta9, TA10, TC4, tc4eli, TC6, TC9, TC10, TC11

American brand: GR1, Gr2, GR3, GR5, GR7, Gr12

Production status of titanium rod

Production status of titanium rod:

Hot working status (R)

Cold working status (y)

Annealing state (m)

Solid solution state (st)

Manufacturing technology of titanium rod

Titanium rod manufacturing process:

Hot forging hot rolling polishing (polishing)

Titanium rod executive standard

National standards: GB / t2965-2007, GB / t13810, Q / bs5331-91

American Standard: ASTM b348, ASTM F136, ASTM F67, ams4928

Titanium alloys can be divided into three categories according to phase composition: α Alloy( α+β) Alloy and β Alloys in China are represented by TA, TC and TB respectively.

① α Stability of alloy containing a certain amount α The element of phase, in equilibrium, is mainly composed of α Phase composition. α The alloy has small specific gravity, good thermal strength, good weldability and excellent corrosion resistance. The disadvantage is low strength at room temperature. It is usually used as heat-resistant and corrosion-resistant materials. α Alloys can usually be divided into complete alloys α Alloy (TA7), near α Alloy (ti-8al-1mo-1v) and with a small amount of compounds α Alloy (Ti-2.5Cu).

 ② ( α+β) Stable alloy content α Phase harmony β Phase elements, and the microstructure of the alloy in equilibrium is α Phase harmony β Phase. ( α+β) The alloy has medium strength and can be strengthened by heat treatment, but its weldability is poor. ( α+ β) Alloys are widely used, and the output of Ti-6Al-4V Alloy accounts for more than half of all titanium materials.

③ β The alloy contains a large amount of stable β The element of phase can change the high temperature β All phases were retained to room temperature. β Alloys can usually be divided into heat treatable alloys β Alloy (metastable) β Alloy and near metastable β Alloy) and thermal stability β Alloy. Heat treatable β The alloy has excellent plasticity in the quenched state, and the tensile strength can reach 130 ~ 140kgf / mm2 through aging treatment. β Alloys are usually used as materials with high strength and toughness. The disadvantages are large ratio, high cost, poor welding performance and difficult machining.

1、 Reference standard

1: GB 228 metal tensile test method

2: GB / T 3620.1 grades and chemical compositions of titanium and titanium alloys

3: GB/T3620. 2. Chemical composition and allowable deviation of titanium and titanium alloy processing products

4: GB 4698 sponge titanium, titanium and titanium alloys -- Methods for chemical analysis

2、 Technical requirements

1: The chemical composition of titanium and titanium alloy bars shall comply with the provisions of GB / T 3620.1. When repeated inspection is required, the allowable deviation of chemical composition shall comply with the provisions of GB / T 3620.2.

2: The diameter or side length and its allowable deviation of hot worked bar shall comply with the provisions in Table 1.

3: After hot processing, the allowable diameter deviation of rolled (ground) smooth bar and cold drawn bar shall comply with the provisions of Table 2.

4: After hot processing, the out of roundness of the turned (ground) smooth bar shall not be greater than half of its dimensional tolerance.

5: The indefinite length of the processed bar is 300-6000mm, the indefinite length of the annealed bar is 300-2000mm, and the fixed length or double length shall be within the indefinite length range The allowable deviation of fixed length is + 20mm; The length of the double ruler shall also be included in the notch of the bar, and the amount of each notch is 5mm The fixed length or double length shall be indicated in the contract.


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