Ti3Al8V6Cr4Mo4Zr Grade 19 (Beta C)

This metastable beta alloy is strip producible and cold formable. The alloy has been used for springs, fasteners, torsion bars and as extruded tubulars for deep sour well applications and is listed with the MR0175 approved alloys. The alloy is heat treatable to a wide range of strengths.
Beta C Grade 20

Grade 20 has identical mechanical and physical properties to Grade 19 but has the addition of palladium (0.04-0.08%) to increase its corrosion resistance in extreme sour environments at elevated temperature.
Composition

Table 1. The composition of Ti3Al8V6Cr4Mo4Zr.




Content

C


<0.05%

N2


<0.03%

O2


<0.14%

Al


3.0-4.0%

V


7.5-8.5%

Cr


5.5-6.5%

Zr


3.5-4.5%

Mo


3.5-4.5%

Ti


Balance
Designations

Other designations for Ti3Al8V6Cr4Mo4Zr include:

· ASTM Grade 19 and Grade 20 (with 0.05% Pd)

· AMS 4957

· AMS 4958

· AMS 4945

· MIL –T –9046 B3

· MIL –T –9047

· UNS R58640 (Grade 19)

· UNS R58645 (Grade 20)