Titanium rod production grade
National standard number: TA1, TA2, TA3, TA7, TA9, TA10, TC4, TC4ELI, TC6, TC9, TC10, TC11
American label number: GR1, GR2, GR3, GR5, GR7, GR12 
Titanium rod production specifications
| Size (mm) || Tolerance (mm) || Ovality (mm) |
| 6.35 to 7.94 || ± 0.13 || 0.20 |
| 7.94 to 11.11 || ± 0.15 || 0.23 |
| 11.11 to 15.88 || ± 0.18 || 0.25 |
| 15.88 to 22.22 || ± 0.20 || 0.30 |
| 22.22 to 25.40 || ± 0.23 || 0.33 |
| 25.40 to 28.58 || ± 0.25 || 0.38 |
| 28.58 to 31.75 || ± 0.28 || 0.41 |
| 31.75 to 34.92 || ± 0.30 || 0.46 |
| 34.92 to 38.10 || ± 0.36 || 0.53 |
| 38.10 to 50.80 || ± 0.40 || 0.58 |
| 50.80 to 63.50 || +0.79, − 0 || 0.58 |
| 63.50 to 88.90 || +1.19, − 0 || 0.89 |
| 88.90 to 114.30 || +1.59, − 0 || 1.17 |
Titanium alloys can be divided into three types according to the composition of the phases: α alloy, (α + β) alloy and β alloy. China is represented by TA, TC, and TB, respectively.
① α-alloy contains a certain amount of stable α-phase elements, and is mainly composed of α-phase in equilibrium. Alpha alloy has a small specific gravity, good thermal strength, good weldability and excellent corrosion resistance. The disadvantage is low room temperature strength, which is usually used as heat-resistant materials and corrosion-resistant materials. Alpha alloys are generally divided into full alpha alloys (TA7), near alpha alloys (Ti-8Al-1Mo-1V), and alpha alloys (Ti-2.5Cu) with a small amount of compounds. ② (α + β) alloy contains a certain amount of elements that stabilize the α phase and the β phase, and the microstructure of the alloy in the equilibrium state is the α phase and the β phase. (α + β) alloy has medium strength and can be strengthened by heat treatment, but its welding performance is poor. (α + β) alloys are widely used, among which the output of Ti-6Al-4V alloy accounts for more than half of all titanium materials.
③ β alloy contains a large number of elements that stabilize the β phase, and all high-temperature β phases can be retained to room temperature. Beta alloys are generally divided into heat-treatable beta alloys (metastable beta alloys and near metastable beta alloys) and thermally stable beta alloys. The heat-treated β alloy has excellent plasticity in the quenched state, and can achieve a tensile strength of 130 to 140 kgf / mm2 through aging treatment. Beta alloys are commonly used as high-strength, high-toughness materials. The disadvantages are high specific gravity, high cost, poor welding performance, and difficult cutting. 
| Grade || Manufacturing process delivery state diameter (mm) || Implementation standards |
| TA1 TA2TA9TA10 || Hot Forging Ten Cars (Polished) Polished RM 6-200 || G B2965-98 |
| TC1TC2TC3TC4, etc. || Hot Forging Ten Cars (Polished) Polished RM 6-200  |
Titanium rod production status
Titanium rod production status:
Hot working condition (R)
Cold working condition (Y)
Annealed state (M)
Solid solution state (ST)
Titanium rod manufacturing process
Titanium rod manufacturing process:
Hot forging-hot rolling-turning (polishing)
Titanium rod execution standard
National standard: GB / 2965-2007, GB / T13810, Q / BS5331-91
American Standard: ASTM B348, ASTM F136, ASTM F67, AMS4928
I. Reference Standards
1: GB 228 metal tensile test method
2: GB / T 3620.1 titanium and titanium composite number and chemical composition 
3: GB / T3620.2 Chemical composition and allowable deviation of titanium and titanium alloy processed products
4: GB 4698 Chemical analysis method for sea surface titanium, titanium and titanium alloys
1: The chemical composition of titanium and titanium alloy rods shall comply with the requirements of GB / T 3620.1, and the allowable deviation of the chemical composition shall meet the requirements of GB / T 3620.2 when the re-inspection is required.
2: The diameter or side length of the hot-worked bar and its allowable deviation should meet the requirements of Table 1.
3: After hot working, the diameter of the cold-drawn bar should be in accordance with the requirements in Table 2.
4: After hot working, the out-of-roundness of the bar after turning (grinding) should 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 or double length should be within the range of the indefinite length. The allowable deviation of the fixed length is + 20mm The length of the ruler should also be included in the cut of the bar, each cut is 5mm. The length of the ruler or ruler should be specified in the contract.