ASTM B381 Titanium Grade 12 flanges are forged titanium alloy flanges made from UNS R53400, known for their excellent corrosion resistance, moderate strength, and superior performance in chemical processing, marine, and offshore industries. These flanges are manufactured according to ASTM B381 standards and are available in types such as weld neck, slip-on, and blind flanges in various pressure classes including Class 150, 300, and 600.
Introduction to ASTM B381 Titanium Grade 12 Flanges
ASTM B381 Grade 12 Titanium Flanges are among the most dependable and durable options for high performance piping systems operating in harsh environments. These flanges are made of a titanium alloy with nickel and molybdenum which greatly improves corrosion resistance – especially in reducing acids and chloride-rich environments.
We are offering a wide range of Corrosion Resistant Titanium Grade 12 Flanges which are manufactured as per international quality standards. If you need flanges for offshore platforms, chemical plants or desalination plants, our products are designed for durability, safety and performance.
Table of Contents
- ➤ Introduction to ASTM B381 Titanium Grade 12 Flanges
- ➤ What is ASTM B381 Titanium Grade 12?
- ➤ Types of ASTM B381 Grade 12 Forged Flanges
- ➤ ASTM B381 Gr 12 Specification
- ➤ Chemical Composition of Titanium Grade 12 (UNS R53400)
- ➤ Mechanical Properties of Titanium Grade 12 Flanges
- ➤ Dimensions Table
- ➤ ASTM B381 vs ASME B16.5 – What’s the Difference?
- ➤ Why Choose Us as Your ASTM B381 Titanium Grade 12 Flanges Manufacturer?
What is ASTM B381 Titanium Grade 12?
ASTM B381 is a standard specification covering titanium and titanium alloy forgings. Grade 12 (UNS R53400) is one of the most widely used alloys due to its balanced combination of strength, weldability, and corrosion resistance.
Key Characteristics:- Excellent resistance to crevice corrosion
- Superior performance in seawater and chloride environments
- High weldability compared to other titanium grades
- Good strength at elevated temperatures
Types of ASTM B381 Grade 12 Forged Flanges
We manufacture and export a complete range of ASTM B381 Gr 12 Forged Flanges to suit various industrial requirements:
➤ Titanium Grade 12 Weld Neck Flanges Supplier
- Ideal for high-pressure applications
- Long tapered hub reduces stress concentration
- Commonly used in petrochemical and oil & gas industries
➤ Gr 12 Titanium Slip On Flanges Exporter
- Easy installation and alignment
- Cost-effective solution for low-pressure systems
- Suitable for water pipelines and processing units
➤ Grade 12 Titanium Blind Flanges ASTM B381
- Used to seal pipe ends
- Perfect for pressure testing and maintenance operations
➤ Ti Grade 12 WNRF Flange Class 300
- Raised face design improves sealing efficiency
- Suitable for medium to high-pressure systems
ASTM B381 Gr 9 Flanges Specifications
| Specification | Details |
|---|---|
| Standard | ASTM B381 / ASME SB381 |
| Grade | ASTM B381 titanium Grade 12 |
| UNS | UNS R53400 |
| Size Range | ½” to 48” |
| Pressure rating | Suitable for High Pressure Applications |
| Flange Types | Weld Neck, Slip-On, Blind, Socket Weld |
| Manufacturing | Forged & Machined |
| Face Type | RF, FF, RTJ |
Chemical Composition of Titanium Grade 12 (UNS R53400)
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Nickel (Ni) | 0.6 – 0.9 |
| Molybdenum (Mo) | 0.2 – 0.4 |
| Oxygen (O) | Max 0.25 |
| Iron (Fe) | Max 0.30 |
Mechanical Properties of Titanium Grade 12 Flanges
| Property | Value |
|---|---|
| Tensile Strength | 483 MPa (min) |
| Yield Strength | 345 MPa (min) |
| Elongation | 18% (min) |
Dimensions Table
| Size | OD (mm) | Thickness (mm) | Bolt Circle (mm) |
|---|---|---|---|
| 1/2” | 94 | 14 | 1.2 |
| 1" | 115 | 16 | 2.1 |
| 2" | 165 | 19 | 4.8 |
| 4" | 255 | 24 | 12.5 |
| 6" | 320 | 29 | 22.0 |
Applications of Titanium Grade 12 Flanges
These flanges are widely used in industries where corrosion resistance is critical:
- Offshore oil & gas platforms
- Chemical processing plants
- Marine and desalination systems
- Power generation units
- Heat exchangers and condensers
ASTM B381 vs ASME B16.5 – What’s the Difference?
One of the most searched queries is ASME B16.5 vs. ASTM B381 Grade 12, and understanding this is crucial:
- ASTM B381 → Defines material specification (titanium forgings)
- ASME B16.5 → Defines dimensions, pressure ratings, and tolerances
In simple terms:
- ASTM B381 = What material is used
- ASME B16.5 = How the flange is designed and sized
Related Titanium Flanges
- ASTM B381 Titanium Grade 1 Flanges
- ASTM B381 Titanium Grade 2 Flanges
- ASTM B381 Titanium Grade 5 Flanges
- ASTM B381 Titanium Grade 7 Flanges
- ASTM B381 Titanium Grade 9 Flanges
- ASTM B381 Titanium Grade 23 Flanges
Why Choose Us as Your ASTM B381 Titanium Grade 12 Flanges Manufacturer?
We combine industry experience with strict quality control to deliver dependable flange solutions.
- In-house forging and machining capabilities
- Strict quality control and third-party inspection
- Compliance with ASTM, ASME, and international standards
- Ready stock for urgent requirements
- Competitive global pricing
What You Can Expect:
We focus on delivering not just products, but reliable solutions that reduce downtime and maintenance costs.
Frequently Asked Questions
Request Your ASTM B381 Titanium Grade 12 Flanges Quote Today!
