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TIMET TIMETAL® 50A CP Titanium (ASTM Grade 2)
Categories: Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium

Material Notes: 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 700°C for 1 hour and air cool. Stress Relieve at 500°C for 30 mins and air cool.

Data provided by TIMET.

Key Words: UNS R50400
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Physical PropertiesOriginal ValueComments
Density 4.51 g/ccTypical
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 485 MPaTypical
 178 MPa
@Temperature 450 °C
 186 MPa
@Temperature 400 °C
 229 MPa
@Temperature 300 °C
 280 MPa
@Temperature 200 °C
 383 MPa
@Temperature 100 °C
Tensile Strength, Yield 345 MPa
@Strain 0.2 %
Typical
 74.0 MPa
@Strain 0.2 %,
Temperature 450 °C
 92.0 MPa
@Strain 0.2 %,
Temperature 400 °C
 127 MPa
@Strain 0.2 %,
Temperature 300 °C
 192 MPa
@Strain 0.2 %,
Temperature 200 °C
 256 MPa
@Strain 0.2 %,
Temperature 100 °C
Elongation at Break 28 %Typical
 31 %
@Temperature 100 °C
 34 %
@Temperature 450 °C
 37 %
@Temperature 200 °C
 38 %
@Temperature 400 °C
 43 %
@Temperature 300 °C
Reduction of Area 57 %Typical
Modulus of Elasticity 105 - 120 GPaTypical
Fatigue Strength 154 MPa
@# of Cycles 1.00e+7
Notched, Kt=3; rotating bend
 232 MPa
@# of Cycles 1.00e+7
Smooth, Kt=1; rotating bend
Bend Radius, Minimum 2.5 tTypical; on 0.078 in (2 mm) sheet
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000530 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 8.60 µm/m-°C
@Temperature 20.0 - 100 °C
 9.50 µm/m-°C
@Temperature 20.0 - 300 °C
 9.70 µm/m-°C
@Temperature 20.0 - 500 °C
Thermal Conductivity 21.79 W/m-K
Maximum Service Temperature, Air 425 °CContinuous
 540 °CIntermittent
Beta Transus 915 °C
 
Component Elements PropertiesOriginal ValueComments
Carbon, C <= 0.080 %
Hydrogen, H <= 0.015 %
Iron, Fe <= 0.30 %
Nitrogen, N <= 0.030 %
Other, each <= 0.10 %
Other, total <= 0.40 %
Oxygen, O <= 0.25 %
Titanium, Ti >= 98.9 %Calculated as remainder

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NTIME50A / 19301

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