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Titanium 6246 (6-2-4-6) is an alpha-beta alloy that can be heat treated to higher strengths in greater section sizes than titanium 6Al-4V (Titanium Grade 5) with excellent corrosion resistance. It is frequently used in applications where high strength and light weight are needed along with good corrosion resistance. As in other titanium alloys, Ti 6246 (6-2-4-6) has high level of corrosion resistance based on the existence of a consistent and continuous oxide layer which is formed spontaneously upon exposure to oxygen. In addition, due to its approximate 6% molybdenum content, Ti 6246 (6-2-4-6) has excellent resistance to corrosion in reducing environments such as Hydrogen Sulfide (H2S). It has excellent resistance to corrosion in seawater making it a good choice for use in offshore and subsea oil and gas operations where seawater corrosion and weight are concerns.
Titanium 6246 (6-2-4-6) like other titanium alloys, has a modulus of elasticity of 107 Gpa (15.5 x 103 ksi), roughly half that of carbon steels. Advantages of titanium 6246: • Conforms to NACE MR 0175/ISO 15156 • Superior corrosion resistance in oilfield environments • Low density/very high strength-to-weight ratio • Low modulus of elasticity • Low thermal expansion • Non-magnetic • Good fatigue resistance • Can be heat treated to higher strength levels than Ti 6Al-4V (minimum 1040 MPa / 150 ksi) • Good high temperature mechanical properties Titanium 6246 (6-2-4-6) is used in applications where very high strength, light weight and corrosion resistance are important. Potential applications include shafts and housings for oil and gas drilling tools, subsea wellhead and packer, and downhole components. |
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Titanium Engineers, Inc.
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