EVALUATION OF NEW TITANIUM SHEET ALLOYS FOR USE IN AIRFRAME CONSTRUCTION. VOLUME III. THE RESULTS OF TESTS TO DETERMINE THE CONSISTENCY OF TI-4A1-3-MO-1V ALLOY PRODUCED AS A COMMERCIAL MATERIAL, TO OBTAIN DESIGN STRENGTHS, TO ESTABLISH FORMING LIMITS, AND TO DETERMINE THE EFFECT OF PROCESSING ON THE MATERIAL PROPERTIES, AND THE RESULTS OF RESISTANCE WELDING TESTS ARE GIVEN IN THIS VOLUME
AIR MATERIEL COMMAND WRIGHT-PATTERSON AFB OHIO
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Results are presented of tests to determine the consistency of commercial Ti-4Al-3Mo-1V 3 sources, the design strengths, the forming limits, the effect of processing on the material properties, and the resistance welding characteristics. The suppliers will provide material with a minimum ultimate strength of 180,000 psi and 155,000 psi yield strength after aging at 925 F for 12 hr. Ti-4Al-3Mo-1V alloy is subject to the Bauchinger Effect, and tensile strains developed by forming operations will cause a reduction in the compressive strength. Forming limits for manufacturing operations are based on sheets reworked by the Scotch Brite process to minimize grind marks.