Versarod is a proprietary weld rod that allows seamless fabrication in wet/dry process tool construction. Versarod allows exhaust plenums to be thermoplastically sealed, welding PVDF to PVDF on the inside of the tool, and PVDF to CRP 1 on the outside of the pipe to cabinet weld. Versarod also allows PVDF plumbing pass-through to be thermoplastically sealed, removing the need for secondary braces and securements. 

Advantages

  • Welds CRP-1 to PVDF PVDF-C
  • Good weld strength and weld ductility
  • Continuous use temperature nominal 60 to 65 °C
  • Allows seamless tool construction and weld sealed PVDF plumbing through CRP-1 cabinet walls
  • Proven, historical performance with tools still in service since 1999

Applications

  • PVDF fittings and plumbing
  • Plenums and pump box walls
  • Wet and dry process tool fabrication
  • Cabinets, casework, tables

SIMONA AMERICA Industries manufactures the widest range of FM 4910 sheet, rod, and welding rod in the industry, featuring the CRP-1 material as the leading material for critical applications. All of our compliant materials are designed to satisfy semiconductor process applications without compromise.

Versarod Weld Rod Chemical Resistance Guideline

CRP-1 to PVDF chemical compatibility and service temperature.

Chemistry Resistance Table
Chemistry Formula Concentration Observed Performance
Acids
Acetic acid CH3COOH 100%
No apparent change
Citric acid C3H4OH(COOH)3 50%
No apparent change
Hydrochloric acid HCl 38%
No apparent change
Hydrofluoric acid HF 49%
No apparent change
Nitric acid HNO3 70%
Swelling, deformation, discolor
Phosphoric acid H3PO4 85%
No apparent change
Sulfuric acid H2SO4 99%
Swelling, deformation, discolor
Solutions
SC1 5: UPW 1: NH4OH 1: H2O2 5:1:1
No apparent change
SC2 5: UPW 1: HCl 1: H2O2 5:1:1
No apparent change
Bases
Ammonium fluoride NH4F 40%
No apparent change
Ammonium hydroxide NH4OH (NH3+H2O) 30%
No apparent change
Hydrogen peroxide H2O2 30%
No apparent change
Potassium hydroxide KOH 45%
No apparent change

Versarod Maximum Continuous Service Temperature

Versarod weld rod is serviceable at 65°C, but may have higher use temperature. Depending on configuration, Versarod is limited to 72 to 75 °C use temperature of CRP-1.

Notes:

  • Direct continuous contact with the above chemicals was assessed at ambient temperature
  • Direct continuous contact was not tested at elevated temperatures or at the maximum recommended use temperature. The above service temperatures are based upon knowledge of historical applications.
  • Because end use varies, SIMONA AMERICA Industries recommends verification and suitability of individual applications. 

Chemical Parameters

Versarod weld rod is not recommended for prolonged continuous contact with strong oxidizing acids, including:

  • 99% sulfuric acid (H2SO4)
  • 70% nitric acid (HNO3)
  • However, Versarod weld rod performs well in intermittent contact with these acids

Versarod weld rod appears to have good resistance to:

  • 38% hydrochloric acid (HCl)
  • 49% hydrofluoric acid (HF)
  • 85% phosphoric acid (H3PO4)
  • 30% ammonium hydroxide (NH4OH)
  • 45% potassium hydroxide (KOH)
  • 30% hydrogen peroxide (H202)
  • 5:1:1 SC1 and SC2