Alloy 20 Fasteners / UNS N08020 / DIN 2.4660

There was a primary reason for the development of carpenter 20 - that it would be resistant to acidic solutions. In particular, austenitic stainless steels have been problematic in the past with acidic solutions, such as sulfuric acid, which easily corrodes these alloys. In comparison to grade 304 and even 316, Alloy 20 Fasteners / UNS N08020 / DIN 2 exhibit superior resistance to sulfuric acid across a wide range of concentrations.

With its higher levels of nickel and chrome, this alloy is able to resist corrosion better than any other alloy. Besides these base elements, manufacturers of WERKSTOFF NR. 2.4660 Studs contain considerable amounts of copper and molybdenum, which in turn improves the resistance of this material to both pitting and chlorine solutions. UNS N08020 Threaded Rod has these properties which are at an elevated level when compared to grade 304 stainless steel. Despite this, carpenter 20 has also been reported to exhibit similar properties to grade 316 in comparison to this material.

 It should be noted thatAlloy 20 Fasteners / UNS N08020 / DIN 2 have excellent mechanical properties and are easy to fabricate due to a lowered carbon content and inclusion of niobium, as a stabilizing element in its alloy, in addition to excellent mechanical properties and fabricability. As a superalloy, Alloy 20 Fasteners are considered by manufacturers and suppliers as having excellent resistance to general corrosion and crevice corrosion, especially in environments containing chemicals such as chlorine, sulfuric acid, phosphoric acid, and nitric acid, which may result in corrosion.

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