Product Introduction of ASTM B381 Titanium Ring
The ASTM B381 Titanium Ring is a high-performance forged titanium component manufactured in accordance with ASTM B381 standards. It is widely used in aerospace, chemical processing, marine, energy, and industrial equipment due to its excellent strength-to-weight ratio, corrosion resistance, and structural reliability. At TSM TECHNOLOGY CO, we supply precision-forged titanium rings in multiple grades, including ASTM B381 Grade F2 and ASTM B381 Grade F5, with strict quality control from raw material to final inspection.
What Is ASTM B381 Standard?
ASTM B381 is a specification covering titanium and titanium alloy forgings, including rings, discs, bars, and blocks. It defines requirements for chemical composition, mechanical properties, heat treatment, and dimensional tolerances. An ASTM B381 Titanium Ring produced under this standard ensures consistency, traceability, and suitability for critical applications.
Dimensional Ranges and Customization Options
TSM Technology Co. offers a wide range of sizes to meet your specific project requirements.
Outer Diameter (OD): Up to 3,000 mm.
Inner Diameter (ID): Custom per specification.
Height/Thickness: Available from 10 mm up to 800 mm.
Surface Finish: As-forged, rough machined, or fine-turned (Ra 0.8μm – 3.2μm).
We also provide comprehensive Non-Destructive Testing (NDT), including Ultrasonic Testing (UT) and Liquid Penetrant Testing (PT), to ensure zero defects.
ASTM B381 Grade F2: The Workhorse of Corrosion Resistance
ASTM B381 Grade F2 is the "commercially pure" (CP) grade most commonly used in the industrial sector. It offers an optimal balance of moderate strength and excellent ductility.
Corrosion Excellence: Highly resistant to oxidizing and mildly reducing environments.
Weldability: Exceptional weldability makes it ideal for complex piping systems.
Applications: Widely used in chemical processing, desalination plants, and marine hardware where seawater corrosion is a primary concern.
ASTM B381 Grade F5: The Pinnacle of Strength (Ti-6Al-4V)
For applications requiring high mechanical loads, ASTM B381 Grade F5 (Ti-6Al-4V) is the industry standard. This alpha-beta alloy is heat-treatable and offers significantly higher tensile strength than CP grades.
High Strength: Nearly double the strength of Grade 2 at a similar density.
Temperature Stability: Maintains its properties at temperatures up to 400°C (750°F).
Aerospace Grade: The preferred choice for turbine components, structural airframe parts, and high-performance automotive racing.
Technical Specifications and Chemical Composition
To ensure compliance with the ASTM B381 standard, we maintain strict control over the chemical metallurgy of our rings.
| Element | Grade F2 (Weight %) | Grade F5 (Weight %) |
| Nitrogen (max) | 0.03 | 0.05 |
| Carbon (max) | 0.08 | 0.08 |
| Hydrogen (max) | 0.015 | 0.015 |
| Iron (max) | 0.30 | 0.40 |
| Oxygen (max) | 0.25 | 0.20 |
| Aluminum | - | 5.5 – 6.75 |
| Vanadium | - | 3.5 – 4.5 |
| Titanium | Balance | Balance |
The Manufacturing Process of TSM Titanium Forged Rings
At TSM, our production cycle is defined by precision. The manufacturing of an ASTM B381 Titanium Ring involves several critical stages:
Ingot Selection: We use only triple-melted vacuum arc remelted (VAR) ingots to ensure purity.
Billet Heating: Precise temperature control to prevent alpha-case formation.
Forging/Rolling: Seamless ring rolling creates a tangential grain flow, which is crucial for pressure-bearing applications.
Heat Treatment: Annealing or solution aging to achieve the desired mechanical properties for ASTM B381 Grade F5.
Machining: CNC turning to meet exact dimensional tolerances.
Exported record and Packing Details:
Why Choose TSM TECHNOLOGY CO. for Your Titanium Forgings?
As a specialist in titanium materials, TSM TECHNOLOGY CO. combines metallurgical expertise with advanced manufacturing capabilities.
Quality Assurance: ISO 9001:2015 certified processes and full traceability with Mill Test Certificates (EN 10204 3.1).
Global Logistics: Efficient shipping to North America, Europe, and Southeast Asia.
Technical Support: Our engineers can help you decide between ASTM B381 Grade F2 and ASTM B381 Grade F5 based on your specific stress and corrosion requirements.
Competitive Pricing: Direct-from-factory pricing without compromising on material integrity.
Would you like me to provide a formal quotation for your specific dimensions or send you our full PDF technical data sheet for ASTM B381 titanium alloys?
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