Alloy A286 is a precipitation hardenable alloy, which is used extensively in the petro-chemical, aerospace and oil field industries, especially for fasteners, stud-bolts
The mechanical properties detailed are typical of most oil-field equipment companies requirements. The main difference between these figures and the properties of ASTM A638 Grade 660 is that the 0.2% offset yield strength is increased from 85,000 psi up to 105,000 psi.
To obtain this a secondary precipitation treatment is often necessary. The maximum hardness figure of 35 HRC is from NACE MR-01-75 and differs from ASTM A638 grade 660 which is 248 HBN minimum. Alloy A-286 is also used for extrusion liners and dies.
Tensile Strength, min
(0.2% offset), min
Elongation in 2"
(or 50mm) or 4D, min
Reduction of Area