What is Acidic Steel - HRP?

Acidic steel, or HRP, is produced by cleaning the oxide (scale) formed on the surfaces of hot-rolled (HR) coils by passing them through hydrochloric or sulfuric acid baths. After the surface is cleaned, it is lubricated with protective oil to prevent oxidation. The resulting product, known as "acid-cleaned steel," is delivered to users either in rolls or cut to size based on demand.

• HRP: Hot-rolled, acid-cleaned, edge-trimmed steel cut from rolls.
• HRPKK: Hot-rolled, acid-cleaned steel cut from rolls without edge trimming.
• THRP: Hot-rolled, tempered, acid-cleaned, edge-trimmed steel cut from rolls.
• THRPK: Hot-rolled, tempered, acid-cleaned steel cut from rolls without edge trimming.

HRP Steel Properties

The increasing popularity of HRP steel products is based on the following properties:

1. High Strength: HRP steels have high strength values. Their resistance significantly increases due to being processed through both hot and cold rolling procedures.

2. Corrosion Resistance: HRP steels have higher corrosion resistance compared to regular iron. Even in areas with a high risk of corrosion, this material can be used for many years without problems.

3. Weldability: HRP steels are also known for their weldability. The welds applied to HRP steels, which can bond strongly with other metals, can remain intact for a long time without degradation.