Eco‑Friendly, Heavy‑Metal‑Free Surface Prep Systems for Aluminum and Allied Alloys
Astra Chemicals (Astra Coatings Ltd.)
Astra Chemicals today announced its expanded family of special prep systems for aluminum and allied alloys – designed to eliminate chrome, phosphate, and other heavy metals while delivering superior corrosion resistance and paint adhesion.
The new solutions comply with RoHS, REACH, and ELV regulations without sacrificing high finish quality required for automotive, aerospace, defence, and architectural metal finishing.
“Environmental compliance and high‑performance metal finishing are not mutually exclusive. Our heavy‑metal‑free aluminium prep systems match the corrosion protection and finish consistency of traditional chromium‑based chemistries.”
Technical Advantages
- Chromium‑free and phosphate‑free conversion coatings (zirconium/titanium/silane)
- Low‑temperature operation – energy saving, longer bath life
- No sludge formation – reduced maintenance and downtime
- Compatible with powder coating, liquid painting, and CED processes
Independent lab tests and field trials (ASTM B117 neutral salt spray, filiform corrosion) confirm performance equal or superior to conventional chromate pretreatments.
Backed by Global Technology Partners
Exclusive technical agreements with Bulk Chemicals Inc. (USA) and Pavco Inc. (USA). Astra is an ISO 9001:2015 certified manufacturer since 1997, with a full‑service laboratory in Bhiwadi, Rajasthan.
🏗️ Proven in Major Infrastructure Projects
Astra’s aluminium prep technology is already specified in Delhi Metro Rail Corporation (DMRC), Commonwealth Games 2010 stadiums, and the Rajiv Gandhi Thermal Power Station (Haryana) – applications demanding high finish standards and long‑term durability.
Availability
Heavy‑metal‑free aluminium prep systems are available immediately for automotive parts, architectural extrusions, general industrial components, and defence supply chains. Astra provides on‑site process audits, inventory control, and troubleshooting across India.
Astra Coatings Ltd.
REGISTERED OFFICE: D4/4166,VASANT KUNJ,NEW DELHI-110070
Sales Office: Regus 953, 9th Floor, Spaze I Tech Park, Tower A1, Sohna Road, Sector 49, Gurugram, Haryana – 122018
Email: info@astrachemicals.com (replace with official email)
Web: https://www.astrachemicals.com
Phone: +91-124-XXX-XXXX (insert official number)
All technical claims are based on Astra Chemicals’ website, ISO certification, and US technology partners.

