Comparison of 9Ni--4Co--0.20C steel and titanium alloy properties for weight-critical structural applications

Technical Report · Wed Dec 31 23:00:00 EST 1975

OSTI ID:4117148

Dawson, D B

Titanium alloys are attractive in weight-critical applications requiring high strength, due to their high strength-to-density ratios when compared with steel and aluminum alloys. The mechanical properties of titanium alloys such as Ti--6Al--4V, Ti--6Al--6V--2Sn, Ti--6Al--2Sn--4Zr--6Mo, and several beta alloys are discussed and compared with 9Ni--4Co--0.20C steel. Data is presented for strength, fracture toughness, fatigue properties, stress corrosion cracking behavior, and corrosion resistance. The trade-off in strength vs. toughness, SCC resistance, and weldability of titanium alloys is discussed. Recommendations of specific titanium alloy systems for various required strength levels are made on the basis of these factors. (auth)

• Research Organization: Sandia Labs., Livermore, Calif. (USA)
• DOE Contract Number: AT(29-1)-789
• NSA Number: NSA-33-017723
• OSTI ID: 4117148
• Report Number(s): SAND--75-8301
• Country of Publication: United States
• Language: English

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