Name: Hastelloy Coil
Brand: United Stainless Llp
Availability: InStock
Rating: 4 (16 reviews)

Question 1

What element is the primary component of all Hastelloy alloys, giving them their unique stability?

Accepted Answer

All Hastelloy grades are made of nickel, which usually constitutes more than fifty percent of the alloy structure. This is due to the high concentration of nickel which contributes to the basic, general resistance to most of the corrosive materials. The added Molybdenum and Chromium at the time then hone the corrosion behavior.

Question 2

Beyond the high raw material cost, what is the major fabrication challenge when processing a Hastelloy coil?

Accepted Answer

Hastelloys are characterized by very fast work hardening in the process of forming, bending or drawing into a coil shape. This property requires low forming speeds, tooling that is specialized and a large number of intermediate annealing steps. It is also much more difficult to machine than steel.

Question 3

Why is Hastelloy Coil often used in the final heat exchange stage of a complex chemical processing system?

Accepted Answer

The coil is fitted in places where the aggressive acids and concentrated chloride solutions are hottest and most active. It helps eliminate the chances of system failure as it is resistant to localized corrosion, pitting and stress cracking that would soon obliterate stainless steel heat exchanger tubing.