ASTM B348
ASTM B348 Basic Info
ASTM B348 plays a crucial role in the titanium industry by providing specifications for commercially pure and alloyed titanium bars, billets, and wire rods. This standard ensures the consistency and quality of titanium materials, which are prized for their exceptional strength-to-weight ratio, corrosion resistance, and biocompatibility. Industries such as aerospace, medical, and automotive rely on ASTM B348 to guarantee the reliability and performance of titanium components in various applications.
Characteristics of ASTM B348
- Corrosion Resistance: Titanium and titanium alloys specified under ASTM B348 exhibit exceptional resistance to corrosion, including in harsh environments such as seawater, chemical processing, and aerospace applications.
- High Strength-to-Weight Ratio: These materials offer a superior strength-to-weight ratio compared to many other metals, making them ideal for applications where lightweight yet strong materials are required, such as aerospace components and medical implants.
- Biocompatibility: Titanium and its alloys are biocompatible, meaning they are well-tolerated by the human body and do not elicit adverse reactions. This property makes them suitable for medical implants, such as orthopedic implants and dental fixtures.
- High Temperature Resistance: ASTM B348 titanium alloys maintain their mechanical properties at elevated temperatures, allowing them to withstand high-temperature applications in aerospace and industrial settings.
- Fabrication Flexibility: Titanium and titanium alloys can be easily fabricated using common techniques such as machining, welding, and forging, providing flexibility in manufacturing processes.
ASTM B348 Data Sheet
Titanium alloy grades
Dimensions and Tol.
Equivalent titanium alloy grades
Chemical composition
Mechanical properties
Titanium alloy grades
Grade 1
Grade 2
Grade 5 (Ti-6Al-4V)
Grade 7 (Ti-0.15Pd)
Grade 9 (Ti-3Al-2.5V)
Grade 12 (Ti-0.3Mo-0.8Ni)
Dimensions and Tol.
Diameter
Dimension Range:
Bars: 0.1875″ – 8.0″
Billets: 0.250″ – 5.0″
Tolerances:
+/- 0.001″ to +/- 0.002″
Length
Dimension Range: As specified by purchaser
Tolerances: As specified by purchaser
Straightness
Maximum deviation: 0.030″
Surface Finish
Suitable for application
Tolerances: As agreed upon by purchaser
Equivalent titanium alloy grades
European Standards (EN)
Equivalent Titanium Alloy Grades: EN 10204, EN 10263-4
Japanese Industrial Standards (JIS)
Equivalent Titanium Alloy Grades: JIS H 4600
British Standards (BS)
Equivalent Titanium Alloy Grades: BS 3TA
ISO Standards
Equivalent Titanium Alloy Grades: ISO 5832-2
Chemical composition
Grade 1 (CP Ti)
- Titanium (Ti): Remainder
- Iron (Fe): 0.20% max
- Oxygen (O): 0.18% max
- Nitrogen (N): 0.03% max
- Carbon (C): 0.08% max
Grade 2 (CP Ti)
- Titanium (Ti): Remainder
- Iron (Fe): 0.30% max
- Oxygen (O): 0.25% max
- Nitrogen (N): 0.03% max
- Carbon (C): 0.08% max
Grade 5 (Ti-6Al-4V)
- Titanium (Ti): Remainder
- Aluminum (Al): 5.5 – 6.75%
- Vanadium (V): 3.5 – 4.5%
- Iron (Fe): 0.30% max
- Oxygen (O): 0.20% max
- Nitrogen (N): 0.05% max
- Carbon (C): 0.10% max
Grade 9 (Ti-3Al-2.5V)
- Titanium (Ti): Remainder
- Aluminum (Al): 2.5 – 3.5%
- Vanadium (V): –
- Iron (Fe): 0.25% max
- Oxygen (O): 0.15% max
- Nitrogen (N): 0.03% max
- Carbon (C): 0.05% max
Grade 23 (Ti-6Al-4V ELI)
- Titanium (Ti): Remainder
- Aluminum (Al): 5.5 – 6.5%
- Vanadium (V): 3.5 – 4.5%
- Iron (Fe): 0.25% max
- Oxygen (O): 0.13% max
- Nitrogen (N): 0.03% max
- Carbon (C): 0.08% max
Mechanical properties
Material Composition and Grades: Providing an overview of the different grades of titanium and titanium alloys covered by ASTM B348
Here’s an overview of the different grades of titanium and titanium alloys covered by ASTM B348, including their compositions, typical applications, and mechanical properties:
These grades offer a range of compositions and properties suitable for various applications in aerospace, chemical processing, marine engineering, medical devices, and automotive industries. Understanding the composition and mechanical properties of each grade is essential for selecting the appropriate material for specific applications.
