Post
Processing

No matter what stage of the design process you are in, Symmetry is here to help make hypotube bending simple, fast, and affordable.

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Symmetry is Your Partner for Hypotube Post Processing

Cleaning

Our custom cleaning and pickling process chemically etches all the oxide from the part yielding a clean and burr free part. This process follows ASTM A380 and has also passed passivation tests.

What is Oxide?

In welding, oxides are compounds formed when a metal reacts with oxygen, and they can be detrimental to the weld quality. Oxides can weaken the weld, cause porosity, and lead to other defects.

Passivation

If required, we offer additional Nitric 2 Passivation onsite per ASTM A967 to remove the free iron from the surface of your parts, leaving a protective chromium-rich oxide passive layer.

What is Nitric 2 Passivation?

Nitric 2 passivation is a specific method of treating stainless steel using a nitric acid solution, as defined by standards like ASTM A967. It involves immersing the stainless steel in a nitric acid solution for a minimum of 30 minutes. This process removes free iron and other contaminants from the surface, promoting the formation of a passive chromium oxide layer, which enhances corrosion resistance.

Materials for Post Processing

304

316

316L

Stainless
Steel

A popular choice for medical devices as well as industrial applications, Stainless steel provides excellent corrosion resistance and mechanical strenght.

2024

5052

6061

Nitinol

Aluminum is a very cost effective material and is both readily available and easy to work with.

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