TIMETAL 35A CP Titanium (ASTM Grade 1)

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

Key Words: UNS R50250

Component   Wt. %
CMax 0.08 
FeMax 0.2 
HMax 0.015 
N Max 0.03 
OMax 0.18 
TiMin 99.1 

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

Commercially Pure Titanium.

Industry Specifications: Germany Engineering: 3.7025. Germany Aerospace: 3.7024. France: T-35. UK Aerospace Specification: BS TA. 1.

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 35A contains the lowest oxygen and iron levels, producing the most formable grade of material. It has the highest purity, lowest strength, and best room-temperature ductility and formability of the four ASTM commercially pure grades. 35A should be used where maximum formability is required such as in explosive bonding and plate type heat exchangers. It exhibits excellent corrosion resistance in highly oxidizing to mildly reducing environments, including chlorides. It has good impact properties at low temperatures. In addition, TIMETAL 35A 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, Ultimate345 MPa50000 psi Typical
Tensile Strength, Yield220 MPa31900 psi Typical 0.2% Proof Stress
Tensile Strength, Yield220 MPa31900 psi Typical 0.2% Proof Stress
Elongation at Break35 %35 % Typical
Reduction of Area70 %70 % Typical
Modulus of Elasticity105 - 120 GPa15200 - 17400 ksi Typical
Fatigue Strength123 MPa17800 psi Notched, Kt=3; limit at 10^7 cycles; rotating bend
Fatigue Strength193 MPa28000 psi Smooth, Kt=1; limit at 10^7 cycles; rotating bend

Electrical Properties
Electrical Resistivity4.5e-005 ohm-cm4.5e-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 Conductivity21.97 W/m-K152 BTU-in/hr-ft-F 
Maximum Service Temperature, Air425 C797 F Continuous
Maximum Service Temperature, Air540 C1000 F Intermittant
Beta Transus890 C1630 F 

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