TA1 vs TA2 vs TA9 vs TA10 Full comparison: composition + mechanics + medium + 5 working conditions + 5 steps to avoid pits

Published by Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd on 2026-08-07

Titanium material grade selection error, It is easy to cause corrosion and leakage of equipment within 1‑3 years of service life, This leads to early retirement of equipment.Located in Baoji, China Titanium Valley, Shaanxi Province, 100 billion Tuoda, deep cultivationTitanium non-standard equipmentManufacturing for many years, handling a large number of first-line engineering project cases.Many project drawings are directly marked TA2, But the working medium contains bromide ions, Equipment put into use one year on the occurrence of failure scrap problem.This article is about TA1., TA10 four mainstream titanium grades complete analysis, coating material composition, mechanical property, Medium adaptation range, Typical working condition selection, Points of practical operation to avoid pit, Help engineering technicians, Procurement personnel to do a good job titanium brand selection work.

Titanium grade selection needs to focus on four dimensions, medium corrosivity, operating temperature, Pd/Mo/Ni alloy element configuration, Project cost budget.Improper brand selection will cause equipment failure ahead of time, resulting in additional investment in the replacement of the entire set of equipment.

Analysis of Basic Components of Four Titanium Brands

According to GB/T 3620.1‑2016 standard, TA1 and TA2 belong to industrial pure titanium, TA9 and TA10 belong to corrosion resistant titanium alloy.TA1 titanium content is not less than 99.5%, purity grade is higher;TA2 titanium content is not less than 99.0%, but also industrial pure titanium with wide application coverage in industrial scenes;TA9 is Ti ‑ 0.15% Pd containing palladium corrosion resistant titanium alloy;TA10 is Ti‑0.3% Mo‑0.8% Ni molybdenum nickel corrosion resistant titanium alloy.

Many engineers will struggle with how to choose between TA1 and TA2.TA1 material purity is higher, but TA2 in the vast majority of industrial scenarios is more applicable, TA2 material strength compared to TA1 increased by about 20%, procurement costs compared to TA1 10‑15% lower.TA2 can basically meet the service conditions under normal corrosion resistance conditions, TA1 More for medical devices, Scenarios requiring high purity such as food contact.

Mechanical properties reference

The density of the four grades of materials is 4.51g/cm³.TA1 tensile strength ≥240MPa, yield strength ≥170MPa, elongation ≥30%, plastic performance outstanding;TA2 tensile strength ≥345MPa, yield strength ≥275MPa, elongation ≥25%, comprehensive mechanical properties balanced;The mechanical properties of TA9 are close to those of TA2, tensile strength ≥ 345 MPa, yield strength ≥ 275 MPa, elongation ≥ 25%.TA10 has good strength performance, tensile strength ≥450MPa, yield strength ≥380MPa, elongation ≥20%, giving consideration to strength and corrosion resistance.

Medium corrosion adaptation points

seawater, dilute acid, neutral salt medium condition, TA2 is preferred, TA1 is available as an alternative, Suitable for general corrosion resistant environmentsNeutral solution containing chloride ions, TA2 is a common choice, TA9 can be considered when there is pitting risk;bromine ion strong corrosion environment, such as bromoacetic acid, Wangshui Environment, Priority TA10, TA9 is available as an alternative, Improve crevice corrosion problemsdilute hydrochloric acid, Dilute sulfuric acid, such as reducing acid environment, Priority TA9, Palladium improves reducing acid tolerance, TA2 needs to be carefully selectedUnder wet chlorine and strong oxidizing acid conditions, TA10 has better adaptability, and TA2 can only be used with caution after evaluation.

TA9 and TA10 are easy to confuse.TA9 added palladium element, dilute hydrochloric acid, dilute sulfuric acid and other reducing acid tolerance outstanding;TA10 relies on molybdenum nickel alloy elements to adapt to oxidizing acid and wet chlorine conditions.Palladium raw material costs are high, TA9 procurement costs higher than TA10, If the working conditions permit, TA10 control project input is preferred.

Five typical operating conditions selection guidelines

Marine Engineering, Contains desalination, Ship supporting equipment, Priority TA2, Alternative TA9 for higher pitting risk scenarios, Adapt to seawater environment for long-term operationTA2 has obvious cost-performance advantages under dilute acid and dilute alkali conditions in general chemical industry, and TA10 is selected for strong corrosion conditions;PTA process unit, Presence of bromine-containing acetic acid medium, TA2 cannot meet the working condition, Priority TA10, TA9 as an alternativeChlor-alkali industry wet chlorine conditions, TA10 for the adaptation of the brand;The pharmaceutical industry strictly controls metal ion precipitation, Priority TA1, TA2 can be used as an alternative, High purity, Compliance certification related requirementsAerospace has requirements for material strength, TA10 is preferred, TA2 is used for relatively loose parts.

The market reference price in August 2026, with TA2 as the benchmark reference, the price coefficient of TA1 is about 0.95, slightly lower than TA2;TA9 price coefficient 3.0 ‑ 3.5, cost increase is obvious;TA10 has a price factor of 1.5‑1.8, up 50‑80% from TA2.Actual transaction is subject to written quotation.Many purchases will consider whether TA10 is worth a 50% cost increase over TA2, In the presence of bromide ions, chloride ion corrosion condition, TA2 Short service life, Combined cost of late replacement package, It will be much higher than the price difference of the previous grade upgrade, TA10 has a higher investment in the early stage, However, the equipment service life can be increased to 5 - 10 years, Comprehensive economy is better.

Real Project Reference Case

Seawater desalination heat exchanger project, Medium Seawater 25‑40℃, Select TA2, Equipment stable operation for 8 years, No pitting failure, thereby realize better cost performance.PTA Plant Project, Medium 120℃ Bromoacetic acid, TA2 was selected in the early stage, Crevice corrosion occurs after 1 year of investment, Complete replacement of equipmentAfter replacing TA10, the equipment has been running stably for 5 years without abnormal corrosion.Chlor-alkali plant pipeline storage tank, Medium 80℃ wet chlorine, Select TA10, The corrosion can be controlled after 6 years continuous operation.Pharmaceutical factory reactor, Medium 60℃ Injection, Select TA1, Relying on high purity attributes, No metal ion precipitation after 5 years operation.aircraft receiver component, 300℃ High Temperature, high-intensity working condition, Select TA10, 3 years of operation with controlled deformation, The intensity index meets the design.

Five main points for avoiding pits in grade selection

first, Do not use bromine ions., TA2 is directly selected for wet chlorine working condition, Under such conditions, TA2 is prone to crevice corrosion in 1‑3 years., Medium contains bromine, chlorine component, TA10 should be evaluated as a priority.second, TA10 is not preferred for reducing acid conditions, TA10 has weaker resistance to reducing acids than TA9., dilute hydrochloric acid, TA9 is preferred in dilute sulfuric acid environment.thirdly, Avoid internal plating, Mixed use of different titanium grades, e.g. sheet TA9 with tube TA2, Galvanic corrosion is easily induced by dissimilar materials, The whole set of equipment shall be unified as far as possible with the same titanium brand.fourthly, Check material certification MTC documents, TA10 Material certificate must be marked Mo, Ni alloy element detection content, Some certificates only indicate the brand number, Missing alloying element data, There is a risk that the material will impersonate TA2.fifth, Watch for price fluctuations, TA9 costs significantly more than TA10, Pay attention to low price supply situation, Review material certificate at procurement stage, Arrange for third-party component testing if necessary.

Technical support services

Shaanxi Qianyi Tuoda is located in Baoji Titanium Valley, with TA1, TA2, TA9, TA10 multi-brand spot reserve, coveringTitanium Plate、titanium pipe、titanium barTitanium forging multi-specification, Three complementary services available, medium, temperature, Concentration parameters to technicians, One-to-one grade selection evaluation can be completedCash resources rapid response project delivery;Receive material certificate, engineer completes MTC verification, identify brand authenticity.Tel: 15909236031, 0917‑3557966, official website:http://www.sxqytd.com/。

Titanium material selection still returns to the four core: medium corrosion, working temperature, alloy element configuration, cost budget.TA2 can cover most normal operating conditions;Bromine ion, wet chlorine environment priority TA10;Reducing acid environment preference TA9;High purity requires TA1.

To expand titanium related knowledge, you can read more articles in the station: 

《TA1 Titanium PlateDetailed explanationhttp://www.sxqytd.com/index.php/new/index/id/186.html 

TC4 titanium alloy depth interpretationhttp://www.sxqytd.com/index.php/new/index/id/195.html 

"TA2 Method to Distinguish between True and False"http://www.sxqytd.com/index.php/new/index/id/115.html

Refer to GB/T 3620.1‑2016 for technical data in this paper, ASME SB265‑2020 related open standards disclaimer, Titanium grade selection in this paper, Media adaptation content for technical reference only, The actual service of materials will be affected by the medium concentration, temperature, Multiple conditions such as field operation and maintenance, Formal project selection is subject to written technical confirmation by both parties.The price in this article is the market reference range in August 2026, and the actual price is subject to the written quotation.