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Hard Chrome Plated Tube-Rod
E355+SR (EN 10305-1) / St52-3 BK+S (DIN 2391) High quality cold drawn tubes, with a wide dimension range for telescopic hydraulic cylinders. It has same properties as normal coated rod with the chrome coating on the outer surface. It reduces your system weight 50%-60% due to the hollow design.
Equivalent Standards
ISO Tolerances
Chemical Compositions
Mechanical Properties
Corrosion Resistance Properties
The corrosion resistance salt spray test is according to ISO 10289.
Equivalent Standards
EN 10305-1 | Material No. |
DIN 2391 |
STAS | AFNOR | BS | UNI EN 10025 |
JIS | GOST 19281-89 |
AISI SAE ASTM |
E355 | 1.0580 | St52-3 | OL52-3 | E36-4 | 4360-50D | Fe510 | SM490A | 17G1S | 1024 |
Technical Specifications | |
Steel Grade | E355 (EN 10305-1) / St52-3 (DIN 2391) |
Heat Treatment | +SR (EN 10305-1) / BK+S (DIN 2391) |
Diameter Range |
Ø20xØ30 mm to Ø105xØ125 mm |
Tolerance Class | ISO f7 |
Standard Lengths |
5 – 7 meter (Upon request, can be produced in special lengths.) |
Inside Surface Roughness | Ra ≤ 0.2 µm |
Chrome Layer Thickness | min. 20 µm |
Chrome Layer Hardness | min. 900 HV (0,1) |
Straightness | max. 0.2 mm : 1000 mm |
ISO Tolerances
Ø | > 18 mm ≤ 30 mm | > 30 mm ≤ 50 mm | > 50 mm ≤ 80 mm | > 80 mm ≤ 120 mm |
> 120 mm ≤ 180 mm |
f7 | -20 μm -41 μm |
-25 μm -50 μm |
-30 μm -60 μm |
-36 μm -71 μm |
-43 μm -83 μm |
Chemical Compositions
C | Mn | Si | P | S |
max. 0.22 | max. 1.60 | max. 0.55 | max. 0.025 | max. 0.025 |
Mechanical Properties
Rm – Tensile strength (N/mm2) |
Rp0.2 – Yield point (N/mm2) |
A5 – Elongation (min. %) |
min. 580 | min. 435 | 10 |
Corrosion Resistance Properties
Standard Rods | Upon Request |
For Ø < 20 mm: Rating 9 after 120 h in NSS | Rating 9 after 500 h in NSS |
For Ø ≥ 20 mm: Rating 9 after 200 h in NSS |
The corrosion resistance salt spray test is according to ISO 10289.
List of dimensions of cold-drawn chrome plated tubular shaft for E355+SR (EN 10305-1) / St52-3 BK+S (DIN 2391) Telescopic hydraulic cylinders.
* Please contact us for the stock statuses of the dimensions marked with *.
You can contact us for your requests for chrome plated shaft with special diameters not given in the list.
Inner Diameter mm |
Outer Diameter mm |
Wall Thickness mm |
Weight Kg/m |
* 20 | 30 | 5 | 3.08 |
20 | 35 | 7.5 | 5.08 |
30 | 40 | 5 | 4.31 |
30 | 50 | 10 | 9.86 |
35 | 55 | 10 | 11.09 |
40 | 60 | 10 | 12.32 |
50 | 70 | 10 | 14.79 |
55 | 75 | 10 | 16.00 |
* 60 | 80 | 10 | 17.25 |
* 70 | 90 | 10 | 19.72 |
* 90 | 110 | 10 | 24.65 |
* 100 | 120 | 10 | 27.11 |
* 105 | 125 | 10 | 28.35 |
* Please contact us for the stock statuses of the dimensions marked with *.
You can contact us for your requests for chrome plated shaft with special diameters not given in the list.