Titanium Grade 4, Annealed

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

Close Analogs: Titanium Grades 1,2,3,4,7,11,and 12 are all considered unalloyed and have similar mechanical properties.

Key Words: ASTM Grade 4: UNS R50700, CP titanium, C.P. titanium alloy

Component    Wt. % C Max 0.1   Fe Max 0.5   H Max 0.015   N Max 0.05   O Max 0.4   Ti 99

Material Notes:
Information provided by Allvac and the references.

Applications: Airframe components, cryogenic vessels, heat exchangers, CPI equipment, condenser tubing, pickling baskets. Sample was annealed 2 hr at 700°C.

Physical Properties	Metric	English	Comments
Density	4.51 g/cc	0.163 lb/in³
Mechanical Properties
Hardness, Brinell	265	265
Hardness, Knoop	296	296	Estimated from Brinell.
Hardness, Rockwell B	104	104
Hardness, Rockwell C	23	23	Estimated from Brinell.
Hardness, Vickers	280	280	Estimated from Brinell.
Tensile Strength, Ultimate	660 MPa	95700 psi
Tensile Strength, Yield	590 MPa	85600 psi
Elongation at Break	20 %	20 %
Modulus of Elasticity	105 GPa	15200 ksi	Unspecified heat treatment in tension
Compressive Modulus	110 GPa	16000 ksi	unspecified heat treatment
Notched Tensile Strength	900 MPa	131000 psi	Kt (stress concentration factor) = 3.0
Poisson's Ratio	0.34	0.34
Shear Modulus	39 GPa	5660 ksi
Electrical Properties
Electrical Resistivity	6e-005 ohm-cm	6e-005 ohm-cm
Thermal Properties
Heat of Fusion	325 J/g	140 BTU/lb	High Purity Ti.
CTE, linear 20°C	8.6 µm/m-°C	4.78 µin/in-°F	20-93°C
CTE, linear 250°C	9.2 µm/m-°C	5.11 µin/in-°F	Unspecified heat treatment. Average over the range 0-315ºC
Specific Heat Capacity	0.54 J/g-°C	0.129 BTU/lb-°F
Thermal Conductivity	16.9 W/m-K	117 BTU-in/hr-ft²-°F
Melting Point	Max 1660 °C	Max 3020 °F	Liquidus
Liquidus	1660 °C	3020 °F
Beta Transus	950 °C	1740 °F
Optical Properties
Emissivity (0-1)	0.3	0.3	High purity Ti at 710°C
Reflection Coefficient, Visible (0-1)	0.56	0.56	High purity Ti; visible light.

References for this datasheet.