SubtitleInduction hardened chrome plated steel bars Introduction.

Induction hardening is a form of heat treatment in which the chrome plated steel bar is heated by induction heating and then quenched. This heat treatment is used to increase the hardness and brittleness of the chrome plated steel bar.

Induction Hardened chrome plated steel bars are used as piston rods for hydraulic cylinders in standard and demanding conditions.

Applications for standard conditions are working in a non-particular corrosive environment.

Applications for demanding conditions are working in a heavy duty and corrosive environment.

We recommend these chrome plated steel bars made from 20MnV6+IH steel for it’s excellent machinability and weldability.

Induction Hardened chrome plated steel bars made from 20MnV6 are recommended at low temperature environments.

A-CHROME BATCM Technical Properties.

  • Diameter Tolerance Standard is ISO-f7. We can provide special tolerance at premium price.

  • Residual Magnetism Standard is Max. 50 Gauss. We can provide special magnetism at premium price.

  • Roundness – max ½ from the diameter tolerance.

  • Surface Roughness is Ra = max 0.20 µm.

  • Surface Hardness – Chrome Layer hardness is minimum 900 HV 0,1. Steel-grade 20MnV6 IH surface hardness is Minimum 42HRC.

  • Straightness for ∅

  • Chrome Layer thickness for ∅≤19.05 [mm] is minimum 15[µm] and for ∅>20[mm] is minimum 20[µm].

  • Corrosion Resistance results are based on a salt spray tests. These tests are following the ISO 9227 and ISO 10289 standards. The results of these tests are giving the rating of our products.

ASO HYDRAULICS & PNEUMATICS chrome plated steel bars corrosion resistance.

  • Standard Corrosion Resistance for Φ<20 is R9/120h and for Φ≥20 is R9/200h according to NSS tests.

  • EXTRA Corrosion Resistance for Φ≥20-140 is R10/120h  and R9/500h according to NSS tests.

  • EXTRA PLUS Corrosion Resistance for Φ≥20-140 is  R10/500h according to NSS tests.

We can provide Double Chrome Layer at premium price.

Weldability excellent due to the micro-alloying effect of the vanadium having high yield and tensile strengths.

Machinability excellent due to silicon-calcium treatment and precise control of the Sulphur content.

Packaging A-CHROME products are supplied in 3 different packaging options. Standard packaging is made with plastic sleeves or paper tubes (depending on the product’s diameter).
Special Packaging (seaworthy protected) with additional cost is made with aluminum foil or vacuum bags.

As an Extra protection with additional cost we can provide also wooden boxes.

SubtitleMarking in ASO HYDRAULICS & PNEUMATICS has a full trace-ability.

Each bar is marked individually onarking in ASO HYDRAULICS & PNEUMATICS is done in order to have a full traceability. the plastic/paper tube with info about the date, product series, diameter, tolerance, resistance at saltwater spray test, heat no, production order. The batch has a label with information regarding: Order no, Item no, Heat no, Steel Grade, total length of the batch, Weight, no of pieces in the batch.
Induction Hardened Chrome plated steel bars are delivered having the Rod end painted in red with green line.

Steel grade correspondents table.

Chemical Composition table.

Mechanical Properties table.

SubtitleDimensional Properties table.

*Some diameters may be subject to a minimum quantity requested
**Lengths may vary depending on the Chroming process used 
***Other diameters, lengths/cut lengths can be provided at premium price

Hardening Depth table.

Corrosion Test standards table