Induction Hardened Chrome plated steel tubes Introduction.
Induction hardened Chrome plated Steel tubes made from E355 + SR steel.
Induction hardening is a form of heat treatment in which the chrome plated steel tube is heated by induction heating and then quenched. This heat treatment is increasing the hardness and brittleness of the chrome plated tube.
Chrome plated steel tubes are used to build hydraulic cylinders. The chrome surface is giving good wear and corrosion resistance.
Chrome plated steel tubes that are hardened through induction have a higher surface hardness plus durability and low friction. It has been proven that chrome plated steel tubes can be used as piston rods in order to have a lighter hydraulic cylinder.
We recommend for long reach cylinders A-TUBE TUTC as the best option to build lighter cylinders with higher mechanical demands.
A-TUBE TUTC Technical Properties.
Diameter Tolerance Standard is ISO-f7. We can provide special tolerance at premium price.
Ovality – max ½ from the OD diameter tolerance.
Eccentricity – max +10% of the wall thickness.
Surface Roughness – OD is Ra = max 0.20 µm.
Surface Hardness Chrome Layer hardness is minimum 900 HV 0,1. Steel-grade E355 IH
Surface hardness is minimum 35HRC.
Hardness depth is from 1,0 to 4,0[mm].
Straightness for OD< 20 [mm] is max 0,3 [mm]/1000 [mm] and for OD> 20 [mm] is max 0,2[mm]/1000[mm].
Chrome Layer thickness is minimum 20[µm].
Corrosion Resistance is given by the salt spray test results. 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 induction hardened chrome plated steel tubes 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 of these chrome plated steel tubes is excellent.Machinability of these chrome plated steel tubes is excellent.Packaging A-TUBE 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.
Marking in ASO HYDRAULICS & PNEUMATICS has a full trace-ability.
Each tube is marked individually on the plastic/paper tube with info about the date, heat no production order tolerance and so on. The batch has a label with the following information: Order no, Item no, Heat no., Steel Grade, OD x ID; total length of the batch, Weight, no of pieces in the batch.
*CEV calculated with the formula:
*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
SubtitleCorrosion Test standards table