A titanium valve body casting is an engineered pressure-containing valve housing cast from corrosion-resistant titanium (ASTM B367 Gr C2 or Gr C5) designed for severe chemical processing, desalination, and offshore marine service.
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Watch the video of our titanium casting and titanium alloy facility to learn how titanium castings and titanium alloys & sheets are made. Video also available on youtube.com .
Titanium offers a high strength to weight ratio and extraordinary corrosion resistance, making it an ideal choice for medical, marine, hand tools, sporting goods, and high performance automotive applications. We supply all grades of titanium alloys: Alpha alloys, Near Alpha alloys, Alpha and Beta alloys, Beta alloys. For oil and gas industry we supply high strength titanium alloys Titanium 6-2-4-6; for casting industry, we supply Grade 5 titanium and CP titanium.
There are two common casting titanium alloys: Titanium Grade 2 and Titanium Grade 5. Please see below for detailed characteristics, applications etc.
Titanium Grade 2 is light weight and highly corrosion resistant. It is an unalloyed titanium and is considered a “commercially pure” titanium (TiCP). Thanks to its varied usability and wide availability, Grade 2 is used in most of the chemical processing plants and is cold formable. Grade 2 plate and sheet can have ultimate tensile strength at and above 40,000 psi.
With moderate strength and excellent corrosion resistance, it also offers ductility and high impact toughness, and good weldability. It is used commonly in applications that require welding. Grades 2 is not hardenable by heat treatment.
| Chemical Processes | Grade 2 titanium is highly resistant to chemical environments including oxidising, alkaline, organic acids and compounds, aqueous salt solutions and hot gases. Its corrosion resistance holds up in, nitric acid, mildly reducing acids and wet chlorine or bromine gas. |
|---|---|
| Marine | In seawater, Grade 2 is resistant to corrosion at temperatures up to 315°C, rendering it ideal for a variety of marine uses. |
Titanium Grade 5 is the most commonly used Titanium worldwide. Titanium Grade 5 is alloyed with 6% Aluminum and 4% Vanadium and is commonly known as Ti 6Al-4V. Grade 5 or Ti 6Al-4V, accounts for 50 percent of total titanium usage the world over.
It can be heat treated to enhance mechanical properties. It can be used in welded fabrication at service temperatures of up to 315°C. This alloy offers high strength at a light weight, useful formability and high corrosion resistance.
| Industries | Aerospace, medical, marine and chemical processing industries and oil field services. |
|---|---|
| Plate | The material is worked to the closest size of the desired part and the grain structure of the finished piece is more homogenous. |
| Heat Barrier | Titanium stops the heat and does not transfer to the rest of the assembly. |
| Property / Parameter | Specification (Gr C2 / Gr C5) | Industry Standard |
|---|---|---|
| Tensile Strength | 50 – 70 ksi (345 – 480 MPa) / 130 – 145 ksi (895 – 1000 MPa) | ASTM E8 / ASTM B367 |
| Yield Strength (0.2% Offset) | 40 – 55 ksi (275 – 380 MPa) / 120 – 135 ksi (828 – 930 MPa) | ASTM E8 / ASTM B367 |
| Pressure Containment & Testing | ASME B16.34 Class 150 to Class 1500 Hydrostatic Test | API 598 / MSS SP-61 |
| Non-Destructive Testing (NDT) | Radiography (X-Ray) & Liquid Penetrant Inspection | ASTM E1742 / ASTM E1417 |
| Flange & Seat Machining Tolerance | ±0.001 in (±0.025 mm) / ASME B16.5 flange facing | ISO 9001:2015 / AS9100D |
| Corrosion Resistance and Surface Treatment |
1) The atmospheric oxidation treatment 2) Precious metal coating 3) Dry coating TiC, TiA membrane (CVD, w2, PCVD) 4) Pb + Pt + injection (ion beam and electron beam) |
|---|---|
| Wear Resistance Surface Treatment |
1) Wet coating 2) Thermal diffusion method 3) Welding method 4) Sputtering 5) CVD, PCD, PCVD method 6) Ion implantation |
| Then Surface Treatment |
1) Surface finish 2) The mirror finishing 3) Color |
Titanium ASTM B367 Grade C2 (unalloyed CP Ti) and Grade C5 (Ti-6Al-4V) are standard for valve bodies, offering exceptional resistance to wet chlorine, hypochlorite, nitric acid, and seawater brine.
Our titanium valve bodies support ASME Class 150 through Class 1500 (up to 3700+ psig / 255 bar) pressure ratings, verified by hydrostatic pressure testing per API 598.
We utilize vacuum skull induction casting combined with 100% Hot Isostatic Pressing (HIP per ASTM B367) to eliminate internal micro-porosity and ensure pressure containment integrity.
Tell us about your titanium alloy, valve body geometry, casting and machining requirements, inspection requirements, quantity, and delivery schedule.
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