Bimetallic Technology
We develop high-performance bimetallic solutions for extrusion and injection barrels and screws, engineered to deliver maximum wear and corrosion resistance in the most demanding applications. Combining advanced manufacturing expertise with precision machining, we help customers extend equipment lifetime, reduce downtime and maximise productivity.
Many customers consider PENA 80 to be one of the most effective bimetallic alloys available for highly abrasive and corrosive applications, thanks to its exceptional wear resistance and extended service life in extrusion and injection moulding processes.
Bimetallic Barrel Alloys
NITRIDED
67/70 HRC- Abrasion MEDIUM
- Corrosion LOW
A cost-effective solution for applications with moderate wear and limited chemical aggressiveness.
PENA 40
Fe/Cr · 64-69 HRC- Abrasion VERY HIGH+
- Corrosion MEDIUM
Engineered for maximum resistance to abrasive wear, ideal for highly filled compounds and mineral-loaded formulations.
PENA 51
Ni/Co · 51-54 HRC- Abrasion MEDIUM
- Corrosion MAXIMUM++
Specifically developed for fluoropolymers and highly corrosive compounds, providing outstanding protection against aggressive chemical attack.
PENA 68
Ni/Cr/WC · 56-60 HRC- Abrasion HIGH
- Corrosion VERY HIGH+
An advanced balance of abrasion resistance and corrosion protection, recommended for demanding technical applications.
PENA 80
Ni/Cr/WC . Carbide2160 HV / Matrix 900 HV- Abrasion MAXIMUM++
- Corrosion MAXIMUM++
Our highest-performance alloy, designed to withstand extreme abrasion and corrosion in the most demanding processing conditions.
Specialists in Bimetallic Parallel Twin Barrels
We are the only manufacturer in Europe capable of producing one-piece bimetallic parallel twin barrels up to 4,500 mm in length.
At PENA, we are specialists in parallel twin-screw technology and interchangeable bimetallic twin liners. Our manufacturing expertise and engineering capabilities have enabled us to develop a truly unique solution: the world’s first interchangeable bimetallic twin liners.
This innovative system allows customers to retain the original twin barrel body and replace only the internal liner when wear occurs or when a different bimetallic alloy is required.
The result is a significant reduction in operating costs, simplified maintenance procedures and increased equipment reliability, while preserving the original dimensional accuracy and thermal performance of the assembly.
With this technology, PENA is redefining sustainability and efficiency in bimetallic systems for extrusion and injection moulding applications.
Bimetallic Screws Alloys
NITRIDED
67/70 HRC- Abrasion MEDIUM
- Corrosion LOW
An economical solution for standard applications with low wear requirements.
PENA 160
Ni–Cr · >1100 HV- Abrasion VERY HIGH+
- Corrosion MEDIUM
High hardness combined with excellent thermal stability and chemical resistance.
PENA 172
Aleación refinada · 58–60 HRC- Abrasion HIGH
- Corrosion VERY HIGH+
Excellent adhesion and oxidation resistance, ideal for humid and corrosive operating environments.
PENA 175
PTA con WC · >62 HRC- Abrasion MAXIMUM++
- Corrosion MAXIMUM++
Maximum protection against severe abrasion, mineral fillers and extreme wear conditions.
Pena Bimetal Advantages
Longer Service Life: up to 4x the lifespan of a conventional nitrided screw.
Superior Wear and Corrosion Resistance: designed to withstand TiO₂, CaCO₃, glass fibre, and aggressive additives.
Lower Operating Costs: reduced downtime, fewer spare parts, increased productivity, and extended equipment lifetime.
Reduced Wear: critical screw geometries remain stable for longer, ensuring consistent processing and extended service life.
