Patent ID: 11920218
Assignee: VSMPO-AVISMA CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A fastener stock in the form of a round rolled bar or a drawn round wire, the fastener stock comprising wrought titanium alloy consisting essentially of, in weight percentages: 5.5 to 6.5 Al, 3.0 to 4.5 V, 1.0 to 2.0 Mo, 0.9 to 1.5 Fe, 0.8 to 1.5 Cr, 0.05 to 0.5 Zr, 0.2 to 0.3 O, 0.05 max. N, 0.08 max. C, 0.25 max. Si, and balance titanium and inevitable impurities, characterized by the value of aluminum structural equivalent [Al] eq in the range of 8.2 to 9.5, and the value of molybdenum structural equivalent [Mo] eq in the range of 6.0 to 8.5, where the equivalents are defined by the following equations:
[Al] eq=[Al]+[O]×10+[Zr]/6, wherein [Al], [O], and [Zr] are the weight percentages of aluminum, oxygen, and zirconium, respectively;
[Mo] eq=[Mo]+[V]/1.5+[Cr]×1.25+[Fe]×2.5, wherein [Mo], [V], [Cr], and [Fe] are the weight percentages of molybdenum, vanadium, chromium and iron, respectively.