1. Introduce
– Titanium alloy with Ni, Mo added compared to Ti Gr.2, Gr.3
– Excellent crevice corrosion resistance, corrosion resistance and strength even in high temperature salt water compared to Ti Gr.2, Gr.3
– Superior strength and service temperature compared to Ti Gr,2, Gr.7
– Titanium alloy with α organization (Near α alloy)
– UNS R53400
* α organization
- features
– α-texture : Material used for high-temperature structures due to low deformation even in high-temperature environment
Excellent material for oxidation resistance, corrosion resistance, and creep at temperatures above 350℃ - Types : Ti Gr.12, Ti-6242(R54620), Ti-11(R52250), Ti-811(R54810), etc.
* UNS
- Abbreviation for Unified Numbering Systems for Metals and Alloys
- Unified unique numbering system for metals and alloys
- A representative number that is compatible with metals and alloys defined in many material-related codes such as ASTM, AISI, ASME, AWS, etc.
* R : Reactive and Refractory Metals and Alloys
* UNS R53400 : 5XXXX : Titanium
2. Property
– High temperature strength, cold formability, weldability, good oxidation resistance
| Element | Impact |
|---|---|
| Mo, Ni | Provides strength, corrosion resistance |
[Ti Gr.12(Ni) Chemical Composition (%)]
| Ti | N | C | H | Fe |
|---|---|---|---|---|
| 97.72 ~ 99.20 | Max. 0.03 | Max. 0.08 | Max. 0.02 | Max. 0.30 |
| O | Ni | Mo | Others | |
|---|---|---|---|---|
| Max. 0.25 | 0.60 ~ 0.90 | 0.20 ~ 0.40 | Max. 0.30 |
[Ti Gr.12(Ni) Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | Hardness HV typical |
|---|---|---|---|
| Min. 483 | Min. 345 | Min. 18 | 209 |
[Ti Gr.12(Ni) Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Beta transus temperature (℃) | Specific Heat (0-100℃), J/kg*℃ |
|---|---|---|---|
| 4.51 | 1660 | 890 | 555 |
3. Standard & Specification
– Specification : UNS R53400
| ASTM | B265, B337, B338, B348, B381 |
| Product Form | ASTM | ASME |
|---|---|---|
| Plate, Sheet, Strip | B265 | SB-265 Gr.12 |
| Tube, Pipe | B338, B861, B862 | SB-338 Gr.12, SB-861, SB-862 |
| Bar, Rod, Billet | B348 | SB-348 Gr.12 |
| Fittings | B363 | SB-363 |
4. Available Form
– Plate, Sheet, Strip
– Tube, Pipe
– Bar, Rod, Billet
– Fittings
5. Application & Product
– Power Generation, Chemical, Marine, Aerospace
| Application | Product |
|---|---|
| Power Generation | Nuclear power plants, Evaporators |
| Chemical | Pressure vessels, Pumps, Valves, Heat exchangers, Pipes, Fittings |
| Marine | Ship components, Pumps, Valves |
| Aerospace | Aircraft components, Rocket engines, Gaskets |

(1) Evaporator / (2) Pump / (3) Valve / (4) Rocket Engine


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