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

Technical Report · Thu Jan 01 00:00:00 EST 1976

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
• Resource Relation: Other Information: Orig. Receipt Date: 30-JUN-76
• Country of Publication: United States
• Language: English

Related Subjects

N50230* -Metals
Ceramics
& Other Materials-Metals & Alloys-Properties
Structure & Phase Studies
360103* -Materials-Metals & Alloys-Mechanical Properties
*ALUMINIUM ALLOYS- MECHANICAL PROPERTIES
*NICKEL STEELS- MECHANICAL PROPERTIES
*TITANIUM BASE ALLOYS- MECHANICAL PROPERTIES
*VANADIUM- MECHANICAL PROPERTIES
COBALT ADDITIONS
CORROSION RESISTANCE TIN ALLOYS
MOLYBDENUM ALLOYS- TIN ALLOYS- ZIRCONIUM ALLOYS