Cylinder tubes

Hydraulic tubes with wear-resistant surfaces for long life and reliabilty

 

Material

By default, our roller burnished cylinders are made of Steel Structo 525 steel.

Steel grade EN ASTM DIN NFA BS UNI
Structo 525 E355 1524 ST52 TU 52 CFS 5 FE 510
Structo 620 E410 STE 460 20MnV6
Structo 720 E410 STE 460 20MnV6

Mechanical characteristics

Steel grade Condition Yeald strenght Rp0,2 [Mpa (N/mm²)] Tensile strenght Rm [Mpa (N/mm²)] Elongation A% Impact toughness KV [J] @ -20°C Hardness
Structo 525 +SR 525 600 15 ** *
Structo 620 +SR 620 700 15 ** *
Structo 720 +SR 720 800 15 ** *

* Valid only upon request
** Can be supplied

Surface finish

The ID surface roughness is maximum Ra 0,3 µm.

Delivery condition

Structo cylinder tubes are as standard delivered in cold drawn stress relieved annealed condition.

Warehousing

Roller burnished tubes are available in a wide range of sizes from OD 50-245 mm and ID 40-220 mm in Structo 525 steel grade.