Blogs and News from Chase Corporation Wire & Cable

Chase BlH₂Ock® High-Flow Strand-Block Technology

Written by Steven Jackson | Jul 17, 2025 3:04:51 AM

Technical Blog & Marketing Content Package
Prepared for global cable-manufacturing engineers

Solving the Water-Blocking Challenge in MV Cable Manufacturing — Meet Chase BlH₂Ock® High-Flow

Chase Corporation, known globally for its Chase BlH₂Ock® A162A water-blocking 
compound, has launched a next-generation solution: Chase BlH₂Ock® High-Flow 
(A162HF). With a 35% higher melt index and lower processing temperatures, this innovative 
strand-block material improves line speed, reduces downtime, and maintains the same 
compliance with global MV cable standards as traditional Chase BIH20ck — especially vital 
for undersea and underground power transmission.

 

Why This Matters Now

As the global grid expands through urban tunnels, offshore wind farms, and remote 
infrastructure, reliable, long-life MV cables are more critical than ever. Water ingress 
remains a top cause of cable failure — and in harsh, wet environments, failure isn’t an option.
That’s why Chase Corporation re-engineered its trusted strand-block technology. The result: 
Chase BlH₂Ock® High-Flow, designed for next-level throughput and performance.


Addressing Critical Challenges: Water-Treeing & Production Bottlenecks

Water ingress into stranded conductors causes microscopic cracks (water-treeing), 
reducing cable life from 30–40 years to as little as 8–12.
• Traditional strand-block compounds can limit line speed, clog pumps, or stress 
tooling at high temperatures.

The High-Flow BlH₂Ock® (A162HF) Solution

Feature Benefit to Manufacturers
Melt index +35% Higher flow = faster line speed, cleaner cones
Lower pump temp (166–190 °C) Less wear on equipment, safer application
Cone penetration +10%  Better flow control; fewer air gaps
Stable to 230 °C Drip reduction = long-term field reliability
Global test pass (ICEA, ANSI, IEC) Engineered for underground and undersea cables
ISO 9001 Production & Delivery Consistency from drum to drum

 

Product Comparison Table

Property  A162A (Standard)  A162HF (High-Flow)
Melt Index 35-70 g/10 min @150°C 60-80 g/10 min @150°C
Cone Penetration 9.5 mm 10.5 mm
Process Temperature  176-190 °C 166-190°C
Flow/Line Speed Standard  +35%
Downtime  Standard  -10%
Thermal Stability  No drip @ 230°C Same 
Shelf Life  5 years 5 years

Proven Results*

A leading cable manufacturer running High-Flow on three lines reported:

  • +35% increase in production throughput
  •  –10% less downtime from pump clogs
  • 4 straight months of record production

*Performance data based on preliminary field observations from a key customer and internal testing. Data anonymized to protect client confidentiality; comprehensive QA validation and verification of all source metrics are currently underway to confirm full accuracy


Applications & Standards

Ideal for:

  • Undersea power export cables
  • Underground transmission
  • Tunnel-bored urban feeders

Compliant with:

  • ICEA T-31-610 / T-32-645 / T-34-664
  • ANSI C119.4
  • IEC 60811

Ready to Upgrade?