ASTM B348 Titanium Bar
This ASTM B348 Standard Specification is for annealed Titanium and Titanium Alloy Bars and Billets, Grades from grade 1 to grade 34. Titanium is used in oil exploration, power plants and mining and processing plants.
Product Introduction
Overview
Standard: ASTM B348
Titanium bars are produced through hot rolling, a process that reduces the diameter of titanium ingots while increasing their length. This manufacturing method allows for precise control of dimensions and mechanical properties, ensuring a consistent and high-quality final product.
The resulting ASTM B348 titanium bar is strong, durable, lightweight, and highly corrosion-resistant, making it an excellent material for industrial, medical, and aerospace applications.
We supply titanium bars in the following main grades:
Gr1, Gr2, Gr5, Gr7, and Gr5 ELI (Gr23)
Custom sizes and lengths can be produced according to customer requirements, and ultrasonic inspection is performed on each bar before delivery to ensure internal quality.
Terminology
Definitions
Bar: A hot rolled, forged, or cold worked semi-finished solid section product with a cross-sectional area ≤ 16 in² (10,323 mm²). Rectangular titanium bars must be ≤ 10 in (254 mm) in width and > 0.1875 in (4.8 mm) in thickness.
Billet: A solid semi-finished section, hot rolled or forged from an ingot, with a cross-sectional area > 16 in² (10,323 mm²), where the width is less than five times the thickness.
Dimensions, Weight, and Permissible Variations
Size Tolerances - Hot Rolled Round and Square Bars
| Specified Size (mm) | Size Variation (mm) | Out of Round / Out of Square (mm) |
|---|---|---|
| 6.35 – 7.94 | 0.13 | 0.20 |
| 7.94 – 11.11 | 0.15 | 0.23 |
| 11.11 – 15.88 | 0.18 | 0.25 |
| 15.88 – 22.22 | 0.20 | 0.30 |
| 22.22 – 25.40 | 0.23 | 0.33 |
| 25.40 – 28.58 | 0.25 | 0.38 |
| 28.58 – 31.75 | 0.28 | 0.41 |
| 31.75 – 34.92 | 0.30 | 0.46 |
| 34.92 – 38.10 | 0.36 | 0.53 |
| 38.10 – 50.80 | 0.40 | 0.58 |
| 50.80 – 63.50 | 0.79 | 0.58 |
| 63.50 – 88.90 | 1.19 | 0.89 |
| 88.90 – 114.30 | 1.59 | 1.17 |
Length Tolerances - Hot Rolled and Cold Finished Bars
| Specified Size (mm) | Length (m) | Length Variation (mm) |
|---|---|---|
| To 50.8 incl. | Up to 3.66 | -0 / +12.7 |
| Over 3.66–7.62 | -0 / +19.05 | |
| 50.8–101.6 | Up to 3.66 | -0 / +19.05 |
| Over 3.66–7.62 | -0 / +25.4 | |
| 101.6–152.4 | Up to 3.66 | -0 / +25.4 |
| Over 3.66–7.62 | -0 / +31.75 | |
| 152.4–228.6 | Up to 3.66 | -0 / +31.75 |
| Over 3.66–7.62 | -0 / +38.1 | |
| 228.6–304.8 | Up to 3.66 | -0 / +38.1 |
| Over 3.66–7.62 | -0 / +50.8 |
Machine-Cut After Straightening:
| Specified Size (mm) | Length Variation (mm) |
|---|---|
| To 76.20 | -0 / +3.18 to +4.76 |
| Over 76.20–152.40 | -0 / +4.76 to +6.35 |
| Over 152.40–228.60 | -0 / +6.35 to +7.94 |
| Over 228.60–304.80 | -0 / +12.70 |
Workmanship, Finish, and Appearance
ASTM B348 titanium bars and billets shall be free of injurious external or internal imperfections that could interfere with their intended use.
Annealed bars may be supplied in the following surface finishes:
Descaled
Sandblasted
Ground
Rough-turned
Minor surface imperfections may be removed by spot grinding, provided the final dimensions remain within the specified tolerances.
Applications
ASTM B348 titanium bars are used in a wide range of industries:
Aerospace: Frame structures, engine and propeller components.
Medical: Implants and surgical tools (Gr23/ELI for biocompatibility).
Industrial: Chemical processing, marine environments, and high-performance machinery.
Consumer Electronics: Titanium's modern and metallic appearance makes it ideal for high-end laptop casings (e.g., Apple PowerBook).
Armor Manufacturing: Used for lightweight protective gear due to its exceptional strength-to-weight ratio and corrosion resistance.
Hot Tags:
You Might Also Like
Send Inquiry
