TIMETAL 75A CP Titanium (ASTM Grade 4)

Subcategory: Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium

Key Words: UNS R50700

Component   Wt. %
CMax 0.08 
FeMax 0.5 
HMax 0.015 
N Max 0.05 
OMax 0.4 
TiMin 98.6 

Material Notes:
Titanium content above is calculated as the remainder and may not reflect the actual range.

Commercially Pure Titanium.

Industry Specifications: USA Aerospace: AMS 4901. Germany Engineering: 3.7065. Germany Aerospace: 3.7064. France: T-60. UK Aerospace Specification BS TA. 6.

Features: The mechanical properties of CP titanium are influenced by small additions of oxygen and iron. By careful control of these additions, the various grades of commercially pure titanium are produced to give properties suited to different applications. TIMETAL 75A is equivalent to ASTM Grade 4. It has the highest strength of the four ASTM commercially pure titanium grades in addition to good ductility and moderate formability. The benefits of the good strength to weight ratio of TIMETAL 75A are retained at moderate temperatures. It has good impact properties at low temperatures. It can be satisfactorily welded, machined, cold worked, hot worked, and cast. It is nonmagnetic.

Typical heat treatment for this alloy: Anneal at 700C for 1 hour and air cool. Stress Relieve at 500C for 30 mins and air cool.

Data provided by TIMET.

Physical PropertiesMetricEnglishComments
Density4.51 g/cc0.163 lb/in Typical

Mechanical Properties
Tensile Strength, Ultimate680 MPa98600 psi Typical
Tensile Strength, Yield560 MPa81200 psi Typical 0.2% Proof Stress
Elongation at Break23 %23 % Typical
Reduction of Area46 %46 % Typical
Modulus of Elasticity105 - 120 GPa15200 - 17400 ksi Typical
Fatigue Strength376 MPa54500 psi Smooth, Kt=1

Electrical Properties
Electrical Resistivity6e-005 ohm-cm6e-005 ohm-cm 

Thermal Properties
CTE, linear 20C8.6 m/m-C4.78 in/in-F 20-100C
CTE, linear 250C9.5 m/m-C5.28 in/in-F 20-300C
CTE, linear 500C9.7 m/m-C5.39 in/in-F 20-425C
Thermal Conductivity16.95 W/m-K118 BTU-in/hr-ft-F 
Maximum Service Temperature, Air425 C797 F Continuous
Maximum Service Temperature, Air540 C1000 F Intermittant
Beta Transus950 C1740 F 

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