AMS 4901 Titanium TA4 CP Grade 4 Plate Sheet
What is Commercially Pure (CP) Grade 4 titanium?
Commercially Pure (CP) Grade 4 titanium is the strongest among the CP titanium grades, making it a preferred material for applications requiring both high strength and superior corrosion resistance. Its properties, including good ductility and moderate formability, make it versatile across various industries. It is particularly suited for environments where corrosion fatigue resistance is critical, such as seawater and chemical processing.
· AMS 4901
· ASTM B265
· ASME SB265
· ISO 5832-2 (for medical applications)
Size of Titanium TA4 CP Grade 4 Plate Sheet
Category | Dimension Range |
Thickness | Plates: 6 mm --10 mm |
Sheets: 0.4 mm --6 mm | |
Width | 1000 mm (39.37 inches) |
1250 mm (49.21 inches) | |
Length | 2000 mm (78.74 inches) |
2500 mm (98.43inches) |
Chemical Composition of TA4 CP Grade 4 Plate Sheet
Element | Maximum Composition (%) |
Titanium (Ti) | Balance |
Iron (Fe) | 0.5 |
Carbon (C) | 0.08 |
Nitrogen (N) | 0.05 |
Hydrogen (H) | 0.015 |
Oxygen (O) | 0.4 |
Key Features of TA4 CP Grade 4 Plate Sheet
High Strength:
Minimum yield strength of 480 MPa (70 ksi), making it suitable for load-bearing applications.
Corrosion Resistance:
Outstanding resistance to oxidation, general corrosion, and corrosion fatigue, especially in chloride-rich environments like seawater.
Service Temperature:
Applicable for use at temperatures up to 400°F (204°C).
Composition:
The highest allowable oxygen and iron content among CP grades provides enhanced strength while maintaining excellent corrosion resistance.
Steel and Nickel Alloy Replacement:
Offers a lightweight alternative to steels and nickel-based alloys in many demanding applications.
Mechanical Properties of TA4 CP Grade 4 Plate Sheet
Property | Value |
Tensile Strength | 550 MPa (minimum) |
Yield Strength | 480 MPa (minimum) |
Elongation | 15% (minimum) |
Density | 4.51 g/cm³ |
Hardness | ~215HV |
Service Temperature | Up to 400°F (204°C) |
Typical Applications of TA4 CP Grade 4 Plate Sheet
Marine:
Components exposed to seawater, including hulls, piping systems, and heat exchangers.
Chemical Processing:
Tanks, piping, and reaction vessels for corrosive chemicals.
Aerospace:
Airframe components, ducting, and hydraulic systems.
Power Generation:
Condensers, boilers, and turbine components.
Medical:
Surgical instruments and implants where both strength and biocompatibility are critical.
