Distinguish Stainless Steel Wire Rope

- Jul 19, 2017 -

1. Magnetic test method

Magnetic test is the most primitive and the most common distinction between austenitic stainless steel and ferritic stainless steel is the simplest method, austenitic stainless steel non-magnetic steel, but after a large pressure cold processing will have a mild magnetic, and pure chrome steel and low alloy steels are strong magnetic steels.

2, nitric acid point test method

One notable feature of stainless steel wire ropes is the inherent corrosion resistance of concentrated nitric acid and dilute nitric acid, which makes it easy to differentiate from most other metals or alloys.

However, high carbon 420 and 440 steel in the nitric acid point test is slightly eroded, non-ferrous metals encountered when concentrated nitric acid corrosion immediately, and dilute nitric acid on carbon steel has a strong corrosive.

3. Copper sulfate Point test method

Copper sulfate point test is the easiest way to quickly distinguish plain carbon and all types of stainless steel wire rope, the concentration of copper sulfate solution is 5%-10%, before the pilot test, the experimental area should thoroughly remove the oil or other impurities, polishing a small area with a grinding machine or polishing cloth, and then dropping the test liquid to the grinding place, ordinary carbon steel or iron in a few seconds will form a layer of surface metal copper, and point test stainless steel surface does not produce copper precipitation or display copper color.

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