High Precision ST45 ST52 SAE1045 27SiMn Seamless Honed Tube for Hydraulic Cylinder

Short Description:

Honed tube is usually a CDS (Cold drawn seamless) steel tube or DOM (Drawn Over Mandrel) steel tube with inside diameter honed or skived &roller burnished, so honed tubing is with extremely precise ID dimensions and smoothly ID surface.


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Product Introduction

Honed tube is usually a CDS (Cold drawn seamless) steel tube or DOM (Drawn Over Mandrel) steel tube with inside diameter honed or skived &roller burnished, so honed tubing is with extremely precise ID dimensions and smoothly ID surface.

Honed tubes are broadly utilized to produce and repair hydraulic cylinders and pneumatic cylinders. So in many fields, the honed tube is called cylinder tube also.

Honed tube usually is produced by two main manufacturing process, which are honing process or skiving & roller burnishing process. The mother tube we usually use “Suitable To Hone” Cold Drawn Seamless Tubes. The process of the honed pipe is determined upon the dimension, mold available and the requirement of the customer.

Quality Standard

DIN 2391, EN 10305, SAE J524, ASTM A519, GB3639

Steel Grade:

ST45, ST52, SAE1045,27SiMn

Chemical Composition

Steel Grade

C

Si

Mn

S

P

ST45

0.21

0.35

0.35~0.65

≤0.025

≤0.025

ST52

≤0.22

≤0.55

1.6

≤0.025

≤0.025

SAE1045

0.42~0.50

0.17~0.37

0.50~0.80

≤0.035

≤0.035

27SiMn

0.24~0.32

1.10~1.40

1.10~1.40

≤0.035

≤0.035

 

Mechanical Properties

Delivery condition

BKS

Cold drawn and stress-relieved

Steel Grade

T.S

obN/mm²

Y.S

OsN/mm²

Elongation

δ5%

ST45

520

375

15

ST52

600

520

14

SAE1045

600

500

10

27SiMn

760

610

10

 

Honed Tube Size

Processing

Cylinder diameter /mm

Length

Straightness

Size accuracy

Wall thickness/mm

Inner boreroughness

Cold Drawn/Rolled

ID28~OD400

≤12M

0.3~1.0m m/m

H8-H11

±5%

0.8~1.6um

Honed/SRB

ID30~OD500

≤12M

0.3~1.0m m/m

H8

±5%

0.2~0.8um

 

Inner hole size tolerance

ID Size

ID deviation (mm)

WT Tolerance (mm)

H7

H8

H9

H10

30

+0.021/0

+0.033/0

+0.052/0

+0.084/0

±7.5%

>210mm ±10%

30~≤50

+0.025/0

+0.039/0

+0.062/0

+0.1/0

50~≤80

+0.030/0

+0.046/0

+0.074/0

+0.120/0

80~≤120

+0.035/0

+0.054/0

+0.087/0

+0.140/0

120~≤180

+0.040/0

+0.063/0

+0.100/0

+0.160/0

180~≤250

+0.046/0

+0.072/0

+0.115/0

+0.185/0

250~≤315

+0.052/0

+0.081/0

+0.130/0

+0.210/0

315~≤700

+0.057/0

+0.089/0

+0.140/0

+0.230/0

Honed Tube Application Field

Honed tubes are widely used in hydraulic systems such as various oil cylinders, air cylinders, and hydraulic cylinders due to their high-precision inner wall and good mechanical properties. Honed tubes play an important role in engineering machinery, automobiles, ships, aerospace, and other fields. For example, in engineering machinery such as excavators and loaders, honed tubes are used in the manufacture of oil cylinders and are subjected to huge pressure and impact, in automobile manufacturing, honed tubes are used in key parts such as engines and brake systems to ensure the safety and stable operation of automobiles.


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