ASTM B381 Titanium Grade 12 Flanges
At Amardeep Steel Centre LLP, we pride ourselves on offering top-tier industrial solutions. Among our extensive product range, Titanium ASTM B381 Grade 12 Flanges stand out as a vital component across various industries. Renowned for their superior quality and exceptional properties, these flanges are engineered to meet the highest standards of performance and durability.
In this article, we delve into the specifics of ASTM B381 Grade 12 Titanium Flanges—their properties, advantages, applications, and why they are the preferred choice for many engineers and project managers.
What are ASTM B381 Grade 12 Titanium Flanges?
ASTM B381 Grade 12 Titanium Flanges are high-performance components designed for applications requiring excellent corrosion resistance, strength, and toughness. These flanges are manufactured following the ASTM B381 standard, which sets the specifications for forged titanium and titanium alloy flanges. Grade 12 titanium is a titanium alloy that includes small amounts of nickel and molybdenum, enhancing its resistance to corrosion and strength.
These flanges are used in piping systems to connect pipes, valves, pumps, and other equipment, ensuring a leak-proof and secure joint. They are available in various types, including slip-on, weld neck, blind, socket weld, lap joint, threaded, and others, each designed for specific applications.

ASTM B381 Grade 12 Titanium Flanges Properties
Understanding the ASTM B381 Grade 12 Titanium Flanges properties is crucial for selecting the right flange for your application. Below are the key properties that make these flanges highly sought-after:
- Corrosion Resistance: Titanium Grade 12 offers superior resistance to a wide range of corrosive environments, including both oxidizing and mildly reducing environments. This makes these flanges ideal for use in chemical processing, desalination, and marine industries.
- High Strength-to-Weight Ratio: Despite being lightweight, Titanium ASTM B381 Grade 12 Flanges possess a high strength-to-weight ratio. This characteristic ensures that structures and systems are robust yet not unnecessarily heavy.
- Good Weldability: Grade 12 titanium flanges are known for their excellent weldability, allowing for easier and more secure installations in various industrial settings.
- Excellent Ductility and Toughness: These flanges exhibit great ductility and toughness, which are essential for withstanding high-pressure environments and dynamic loading conditions.
- Heat Resistance: ASTM B381 Grade 12 Titanium Flanges maintain their mechanical properties even at elevated temperatures, making them suitable for high-temperature applications.
Advantages of ASTM B381 Grade 12 Titanium Flanges
Choosing ASTM B381 Grade 12 Titanium Flanges brings several advantages to your projects and operations:
- Long-Term Durability: The combination of corrosion resistance and strength ensures that these flanges have a long service life, even in the most challenging environments.
- Cost-Effective: While the initial cost of titanium flanges may be higher than other materials, their durability, low maintenance requirements, and resistance to corrosion translate to lower long-term costs.
- Versatility: These flanges can be used in a wide range of applications, from oil and gas to power generation and marine industries, thanks to their versatile properties.
- Environmental Resistance: ASTM B381 Grade 12 Titanium Flanges are resistant to chlorides, acids, and other harsh chemicals, making them ideal for chemical processing industries.
- Non-Magnetic Properties: Titanium Grade 12 is non-magnetic, making these flanges suitable for use in sensitive electronic and magnetic applications.


Schedule and Size Chart
Nominal Pipe Size (NPS) | Flange Size (Inches) | Pressure Class | Thickness (mm) | Diameter (mm) | Bolt Circle Diameter (mm) | Number of Bolts | Bolt Diameter (mm) |
1/2″ | 3.25″ | 150# | 11.2 | 90.0 | 60.5 | 4 | 12.7 |
3/4″ | 3.88″ | 150# | 13.9 | 100.0 | 70.0 | 4 | 12.7 |
1″ | 4.25″ | 150# | 15.7 | 110.0 | 79.5 | 4 | 12.7 |
2″ | 6.00″ | 150# | 19.1 | 150.0 | 120.7 | 4 | 15.8 |
3″ | 7.50″ | 150# | 23.9 | 190.0 | 152.4 | 4 | 19.0 |
4″ | 9.00″ | 150# | 24.9 | 230.0 | 190.5 | 8 | 19.0 |
6″ | 11.00″ | 150# | 26.9 | 280.0 | 241.3 | 8 | 22.2 |
8″ | 13.50″ | 150# | 29.0 | 345.0 | 298.5 | 8 | 22.2 |
Mechanical Properties Chart
Property | Value | Test Standard |
Tensile Strength | 485 MPa (70 ksi) | ASTM E8 |
Yield Strength (0.2% offset) | 345 MPa (50 ksi) | ASTM E8 |
Elongation | 18% | ASTM E8 |
Hardness | 200 HBW (Approx.) | ASTM E10 |
Modulus of Elasticity | 103 GPa (15,000 ksi) | ASTM E111 |
Fatigue Strength | 240 MPa (35 ksi) | ASTM E466 |
Specifications Chart
Standard | Description |
ASTM B381 | Standard Specification for Titanium and Titanium Alloy Forgings |
ANSI B16.5 | Pipe Flanges and Flanged Fittings |
ANSI B16.47 | Large Diameter Steel Flanges |
DIN 2631-2638 | Flanges for Pipelines |
ASME B16.5 | Pipe Flanges and Flanged Fittings |
Chemical Composition Chart
Element | Percentage Composition (%) |
Titanium (Ti) | Balance |
Nickel (Ni) | 0.6 – 0.9 |
Molybdenum (Mo) | 0.2 – 0.4 |
Iron (Fe) | ≤ 0.30 |
Carbon (C) | ≤ 0.08 |
Nitrogen (N) | ≤ 0.03 |
Oxygen (O) | ≤ 0.25 |
Hydrogen (H) | ≤ 0.015 |
Physical Properties Chart
Property | Value |
Density | 4.51 g/cm³ (0.163 lb/in³) |
Melting Point | 1660°C (3020°F) |
Specific Heat | 0.523 J/g-°C |
Thermal Conductivity | 16.1 W/m·K |
Electrical Resistivity | 1.72 x 10^-6 Ω·m |
Coefficient of Thermal Expansion | 9.1 µm/m·°C |
Applications Chart
Industry | Applications |
Chemical Processing | Heat exchangers, reactors, and piping systems exposed to aggressive chemicals. |
Marine and Offshore | Desalination plants, shipbuilding, offshore platforms, and seawater applications. |
Power Generation | High-temperature steam systems, condensers, and other critical components. |
Aerospace | Aircraft components, turbine engines, and structural parts requiring lightweight and high strength. |
Oil and Gas | Drilling equipment, pipelines, and refinery operations exposed to corrosive environments. |
ASTM B381 Grade 12 Titanium Flanges Exporters and Supplier
At Amardeep Steel Centre LLP, we are recognized as leading ASTM B381 Grade 12 Titanium Flanges exporters and suppliers. Our flanges are manufactured to the highest standards, ensuring that our clients receive products that meet or exceed their expectations.
We have a vast inventory of Grade 12 Titanium Flanges, catering to various sizes, types, and specifications. Whether you require standard flanges or custom solutions, we have the capability and expertise to meet your needs.
Our commitment to quality is unwavering, and we source our materials from trusted suppliers to guarantee the integrity and performance of our products. Moreover, our global distribution network ensures that you receive your orders on time, no matter where you are located.
Why Choose Amardeep Steel Centre LLP for buying ASTN B381 Grade 12 Titanium Flanges??
- Quality Assurance: We adhere to strict quality control measures to ensure that every flange we supply meets the ASTM B381 standard.
- Experienced Team: Our team of experts has extensive experience in the industry, enabling us to provide valuable advice and support to our clients.
- Competitive Pricing: We offer competitive prices without compromising on quality, ensuring that you get the best value for your investment.
- Customer-Centric Approach: Our focus is on building long-term relationships with our clients by providing excellent customer service and reliable products.
- Global Reach: As a leading ASTM B381 12 Titanium Flanges trader and stockist, we serve clients around the world, offering efficient logistics and delivery services.
ASTM B381 Titanium Flanges are an exceptional choice for industries requiring high-performance, corrosion-resistant, and durable components. At Amardeep Steel Centre LLP, we are committed to providing the best flanges that meet your specific needs, backed by our expertise and dedication to quality.
Whether you are looking for Flanges Titanium ASTM B381 Gr 12 for a new project or need to replace existing components, we are here to help. Contact us today to learn more about our products and how we can assist you in finding the perfect solution for your requirements.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM B381 Titanium Grade 12 Flanges. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
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