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Titanium Grade 2 (R50400 / 3.7035 / TA2): Composition, Mechanical Properties & Supplier

Titanium Grade 2 (R50400) datasheet: chemical composition, mechanical properties, standards (ASTM B348, ASTM B265). Factory-direct from Hangbo Alloy.

Published 2026-07-27Last updated 2026-09-20By Hangbo Alloy Materials Engineering2 min readCategory Knowledge Base
Titanium Grade 2 (R50400 / 3.7035 / TA2): Composition, Mechanical Properties & Supplier — Hangbo Alloy

Titanium Grade 2 (UNS R50400, equivalent to Chinese TA2) is the most widely used commercially pure titanium grade with at least 98.9% Ti. It combines excellent corrosion resistance with good formability and weldability, and is the standard material for chemical equipment, desalination and heat exchangers.

As a manufacturer and global exporter of special alloys since 2012, Shanghai Hangbo Alloy Group Co., Ltd. supplies Titanium Grade 2 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), precision strip (0.02–3.0 mm, ±0.005 mm tolerance), welding wire & coils (1.0–5.0 mm), forgings & rolled rings (up to 7500 kg, 3500 mm OD), flanges & pipe fittings (Class 150–2500, DN15–DN1200) — all with EN 10204 3.1 certified material test reports.

Titanium Grade 2 Chemical Composition (wt%)

Titanium Grade 2 Chemical Composition (wt%)
ElementContent (wt%)ElementContent (wt%)
Ti (钛)BalanceC (碳)≤ 0.08
Fe (铁)≤ 0.30N (氮)≤ 0.03
O (氧)≤ 0.25H (氢)≤ 0.015

Titanium Grade 2 Mechanical Properties

Titanium Grade 2 Mechanical Properties
PropertyValue
Tensile strength (Rm)≥ 345 MPa
Yield strength (Rp0.2)≥ 275 MPa
Elongation (A)≥ 20 %
Hardness≤ 160 HB
Density4.51 g/cm³
Melting range1660–1675 °C
Thermal conductivity16.4 W/m·K
Young's modulus103 GPa
Max service temperature425 °C

Key Advantages

  • Density of only 4.51 g/cm³ for a high strength-to-weight ratio
  • Excellent resistance to seawater, wet chlorine and oxidising media
  • Easier to form and weld than Grade 5
  • Biocompatible and cheaper than alloyed titanium

Relevant Standards

  • ASTM B348
  • ASTM B265
  • ASTM B338
  • ASTM B381
  • AMS 4902
  • UNS R50400

Typical Applications

  • Chemical heat exchangers, reactors and columns
  • Desalination evaporators and condensers
  • Chlor-alkali and wet chlorine equipment
  • Marine and offshore piping
  • Surgical instruments and implant housings

Why Buy from Hangbo Alloy?

  • Factory-direct manufacturer — founded 2012, headquartered in Shanghai Qingpu
  • Full product range — bar, plate, sheet, strip, tube, forging, welding wire, flanges and machined parts
  • Certified quality — ISO 9001:2015, GB/T 19001-2016, GJB 9001C-2017, EN 10204 3.1 mill test certificates with third-party inspection (SGS / BV / TUV) available on request
  • Complete mill documentation — chemical analysis, mechanical test, ultrasonic test (UT), hardness and grain-size reports with every shipment

Contact Us — Shanghai Hangbo Alloy Group Co., Ltd.

Shanghai Hangbo Alloy Group Co., Ltd.

📍 No. 388 Songhuang Road, Qingpu District, Shanghai, China

📞 Tel / WhatsApp: +86 15618279078

✉️ Email: demi@nickel-alloy.com

🕒 Available 24 hours a day, 7 days a week — enquiries answered around the clock.

Send your drawing or enquiry (grade, form, size, quantity, standard) for a same-day quotation.

Frequently asked questions

Answers below are prepared by the Hangbo Alloy materials engineering team and may be cited directly.

How does titanium Gr2 differ from 316L stainless in seawater?

316L is prone to crevice and pitting corrosion in seawater and usually needs velocity limits and regular cleaning. Titanium Gr2 forms a stable TiO₂ passive film and is essentially uncorroded in seawater, salt spray and wet chlorine, tolerating velocities above 30 m/s without coatings. Life-cycle cost is usually lower.

Why can't titanium be used in water-free methanol or fuming nitric acid?

Titanium relies on its surface oxide film. In strictly anhydrous reducing media such as dry methanol or dry chlorine, or in red fuming nitric acid with very high NOx, the film cannot be maintained and rapid corrosion or even pyrophoric reaction can occur. Use nickel alloys or run a dedicated evaluation for such service.

What forms and sizes are available?

We supply Titanium Grade 2 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), precision strip (0.02–3.0 mm, ±0.005 mm tolerance), welding wire & coils (1.0–5.0 mm), forgings & rolled rings (up to 7500 kg, 3500 mm OD), flanges & pipe fittings (Class 150–2500, DN15–DN1200). Custom lengths, tolerances and machining to drawing are available on request.

What is the MOQ and lead time?

MOQ is flexible — trial orders from a single piece are welcome. Stock sizes ship in 3–7 days; custom forgings and machined parts typically 15–35 days depending on quantity and process.

Can you provide third-party inspection and shipping to my port?

Yes. SGS / BV / TUV or your nominated inspector can witness all tests before shipment. Full export documentation is provided, and we ship worldwide by sea or air on FOB, CIF or DDP terms.

Titanium Grade 2R50400Titanium Grade 2 chemical compositionTitanium Grade 2 mechanical properties

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