What Is Chemical Etching? Definition, Process & Applications

 

What Is Chemical Etching?

Chemical etching, also known as photochemical machining (PCM), is a subtractive manufacturing process used to produce highly precise and intricate metal components. By using a photoresist mask and chemical etchants, this method selectively removes metal to form desired patterns without applying mechanical force.

How Chemical Etching Works

The process begins by coating a metal sheet with a photosensitive resist. A phototool (design pattern) is then applied, and the sheet is exposed to ultraviolet (UV) light. The exposed areas are developed, and the metal is submerged in a chemical solution (such as ferric chloride) to etch away unprotected sections. Finally, the resist is stripped, leaving behind the finished metal part.

Materials Suitable for Chemical Etching

  • Stainless Steel
  • Copper and Copper Alloys
  • Aluminum
  • Nickel
  • Titanium
  • Forgeable Alloys

Key Benefits of Chemical Etching

  • Extreme precision (up to ±0.01mm)
  • Stress-free, burr-free processing
  • Low-cost prototyping and no tooling wear
  • Ideal for complex, thin, or fragile designs
  • Supports mass production and fast lead times

Applications of Chemical Etching

Chemical etching is widely used in industries such as:

  • Automotive: Speaker grilles, fuel cell plates, battery heating films
  • Electronics: EMI shielding, connectors, microfilters
  • Aerospace & Medical: Precision metal components

Why Choose Guangdong Zhuanjing?

With 18 advanced etching lines, 20,000㎡ factory space, and IATF16949 & ISO9001 certifications, we offer industry-leading chemical etching services for automotive and industrial clients worldwide. Our in-house production ensures fast turnaround, high accuracy, and strict quality control.

Contact Us Today

Have a project that requires precision metal etching? Contact us for a free consultation or quotation.

Our product

Manufacturing premium quality perforated and formed speaker grill that are designed, engineered, coated and assembled specifically to meet the exacting standards of the global automotive industry.

Door trim speaker grill

center console speaker grille

Headline speaker grill

A pillar speaker grille

Photo-Etched Speaker Grilles

Aluminum speaker grille

Automotive Sill Plates

Speaker grill assembly

Automotive interior trim plates

Customer Reviews

I am extremely impressed with the precision...
Swapnil from United StatesWednesday, Jan 26, 2019
"I am extremely impressed with the precision and quality of the chemical etching performed by your team. The intricate designs on our metal components were etched flawlessly, exceeding our expectations. Thank you for delivering such a high-quality product."
Your chemical etching service has significantly improved the durability...
Sarah from United KingdomWednesday, Jan 20, 2020
"Your chemical etching service has significantly improved the durability and functionality of our products. The etched patterns not only enhance the aesthetics but also provide excellent grip and tactile feel. Our customers are thrilled with the results, and we couldn't be happier with your exceptional craftsmanship."
We have been relying on your chemical etching expertise for several projects...
Eduardo from ItalyWednesday, Mar 16, 2022
"We have been relying on your chemical etching expertise for several projects, and each time, you have consistently delivered outstanding results. Your attention to detail, quick turnaround time, and excellent customer service make you our preferred choice. Your commitment to excellence is commendable."
has given our brand a unique edge in the market...
Taner from TurkeyFriday, April 26, 2023
"The chemical etching performed by your team has given our brand a unique edge in the market. The intricate logos and designs etched onto our products have attracted significant attention and set us apart from our competitors. We appreciate your professionalism and skill."

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