TIMETAL 50A CP Titanium (ASTM Grade 2)


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

Key Words: UNS R50400

Component   Wt. %
CMax 0.08 
FeMax 0.3 
HMax 0.015 
N Max 0.03 
OMax 0.25 
TiMin 98.9 

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 4902, 4941. Germany Engineering: 3.7035. Germany Aerospace: 3.7034. France: T-40. UK Aerospace Specifications BS TA. 2, 3, 4, 5.

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 50A is equivalent to ASTM Grade 2. It is the "workhorse" for industrial applications, having a guaranteed minimum 0.2% yield strength and good ductility and formability. It is used extensively for sea water piping, reactor vessels and heat exchangers throughout the CPI, Petrochemical, Oil and Gas and Naval/Marine markets. This alloy is also ASME approved, has good impact properties at low temperatures, and has excellent resistance to erosion and corrosion by seawater and marine atmospheres. It can be easily 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, Ultimate485 MPa70300 psi Typical
Tensile Strength, Yield345 MPa50000 psi Typical 0.2% Proof Stress
Elongation at Break28 %28 % Typical
Reduction of Area57 %57 % Typical
Modulus of Elasticity105 - 120 GPa15200 - 17400 ksi Typical
Fatigue Strength154 MPa22300 psi Notched, Kt=3; limit at 10^7 cycles; rotating bend
Fatigue Strength232 MPa33600 psi Smooth, Kt=1; limit at 10^7 cycles; rotating bend

Electrical Properties
Electrical Resistivity5.3e-005 ohm-cm5.3e-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 20-500C
Thermal Conductivity21.79 W/m-K151 BTU-in/hr-ft-F 
Maximum Service Temperature, Air425 C797 F Continuous
Maximum Service Temperature, Air540 C1000 F Intermittant
Beta Transus915 C1680 F 


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