Titanium palladium alloy rod GR7, (palladium Pd: 0.12-0.25%)
Titanium Billets and Bars
Grade:
GR.1, GR.2, GR.3, GR.4, GR.5 (Ti-6Al-4V), GR.7 (Ti- 0.12~0.25Pd), GR.9(Ti-3Al-2.5V) , GR.12(Ti-0.3Mo-0.8Ni), GR.23 ( Ti-6Al-4V ELI)
T35, T40, T50, T60, TA6V, 3.7024, 3.7034, 3.7055, 3.7064, 3.7164, 3.7165
Standards:
ASTM B348/ ASTM F136/ ISO 5832-3/ ASTM F67/ ISO 5832-2/ AMS 4928 and other standards.
Process:
Titanium Sponge- Compacting Electrodes- Double VAR Melting-UT testing- Peeling and Cutting- Ingots-Forging- Billets- Rolling/Precisely Forging- Annealing- Machining-UT testing- Polishing/Grinding- Inspection/Testing- Packing.
Detailed Descr1ption
1. Product introduction:
Titanium is a corrosion-resistant metal, which reacts with oxygen to form a stable and dense oxide film, which is stable in oxidizing media, neutral media or weakly reducing media. Therefore, industrial pure titanium can be used directly in many media, or a suitable corrosion inhibitor can be added to the media. However, titanium generally does not have corrosion resistance in reducing acid solution.Pd can improve the performance of titanium in reducing acid corrosion resistance, and at the same time can improve titanium crevice corrosion resistance.
Ti-Pd alloys include Ti-0.2Pd, Ti-0.15Pd and Ti-0.13Pd, among which Ti-0.2Pd is widely used for reactors, towers, autoclaves, heat exchangers in various strong corrosive environments , pumps, valves, centrifuges, separators, pipes, fittings, electrolyzers.
2. Specifications and grades
Product Name Specifications (mm) Status Grade Execution Standard
Titanium palladium alloy rod (30~200)Xs3000 forging rod GR7 ASTMB348
Titanium Palladium Alloy Rod (8~60)Xs3000 Rolled Rod GR7 ASTMB348
3. Production status
Hot working state (R) Cold working state (Y) Annealing state (M) Solution state (ST)
4. Technical requirements
1) The chemical composition of titanium alloy bars shall comply with the provisions of GB/T 3620.1, and when repeated tests are required, the allowable deviation of the chemical composition shall comply with the provisions of GB/T 3620.2.
2) The diameter or side length of the titanium rod and its allowable deviation shall meet the requirements of Table 1.
3) After processing, after turning (grinding) the titanium rod and cold rolling, the allowable deviation of the diameter of the cold drawn titanium rod should meet the requirements of Table 2.
4) The out-of-roundness of the turned (ground) bar after processing should not be greater than half of its dimensional tolerance.
5) The indefinite length of the processed titanium 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 double ruler should also be included in the incision amount of the bar, and the amount of each incision is 5mm. The length of the fixed length or the double ruler should be indicated in the contract.
Mechanical properties
Tensile strength:>370Mpa;
Yield strength:>250Mpa;
Elongation after break: >20%;
Area shrinkage:>25%
What is titanium best used for?
The usage of various Titanium detailed descr1ption
(1).Grade 1 can be used in the drawing parts for its good elongation and excellent corrosion-resistance.
(2).Grade 2 is used most widely in the commercially pure titanium
(3).Grade 3 is almost used in pressure,vessel.
(4).Grade 4 can be used in some fittings parts and fastening pieces, but for complex shape need 300 degree celsius to form.
(5).Alloy grade 5 widely used in the titanium alloys because of its comprehensive mechanical and chemical properties.
(6).Alloy grade 7 add little palladium in cp titanium and it has the most excellent corrosion-resistance,of course it costs higher.
(7). Alloy grade 9(Ti-3Al- 2.5V) is the most widely used in the golf clubs and bicycle girders.
(8). Alloy grade 23, ELI(extra low interstitial),can be used in the medical appliance.
Grade 7 is α-titanium alloy with similar technological and mechanical properties to industrial pure titanium. When the amount of Pd added to titanium reaches 0.1-0.2%, the corrosion rate of titanium in sulfuric acid and hydrochloric acid decreases significantly, and the further increase of Pd content makes the corrosion rate of the alloy almost unchanged. However, when the content of Pd is lower than 0.05%, the corrosion rate increases. When the acid concentration is low, the titanium and palladium alloy containing 0.13%Pd has satisfactory corrosion resistance, but when the acid concentration is high, Ti-0.2Pd has better corrosion resistance, so it is more suitable to use Ti-0.2Pd.
The data show that the corrosion resistance of Ti-0.2Pd in reducing medium is obviously better than that of industrial pure titanium, and the corrosion resistance of the welding zone of Ti-0.2Pd is the same as that of the base material. Compared with deaerated in air-filled hydrochloric acid, the stabilization potential of Ti-0.2Pd is significantly positive, and the corrosion rate can be reduced by 10 times. However, in argon-filled or nitrogen-filled acid solution, the passivation performance of Ti-0.2Pd decreases obviously when the volume of the solution of the sample per unit area increases. Therefore, the use of Ti-0.2Pd should be avoided in the complete absence of oxygen or oxidant. The addition of a small amount of palladium to Grade 7 titanium alloy improved the corrosion resistance in oxidizing media, especially the resistance to crevice corrosion. Therefore, it is widely used in hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid and chloride corrosion media.