Chrome Plated Round Bars

Chrome plated round bar is mostly designed to be used for hydraulic piston rod and pneumatic piston rod manufacturing and repairing. So some people also may call this product hydraulic cylinder rod approximately.

However, besides the above, chrome plated rods can also be used in applications where high performance surface finishing and high accuracy dimension tolerance are required.

Here below is the application list of the chrome rods:

  • Hydraulic cylinders (chrome plated piston rods)
  • Pneumatic cylinders / air cylinders (chrome plated piston rods)
  • Guide rods for plastic manufacturing machine and hydraulic machinery
  • Rollers for machines, such as packing machine rollers, printing machine rollers
  • Shaft for machinery, such as Textile machinery center axle, Transport machinery center axle, etc.
  • Ejector rods for injection molding machines
  • Vibration absorbers and pistons for some industrial machinery.

  • Description
  • Advantages of Chrome Plated Bars
  • Specifications
  • Inquiry
Material: CK45, SAE1045, 4140, 4340, JIS45C, 40Cr, 20MnV6, 42CrMo, SS431, SS430, Stainless Steel 304/316/2205, etc.
Diameter: Φ 6-500mm
Length: max 12m
Chrome layer: 20 micron (min) to 100 micron
Hardness of the chrome layer: 850 HV (min) – 1150 HV
Roughness: Ra <= 0.2u
Straightness: <= 0.2/1000
Diameter tolerance: ISO f7/h8/g6
Roundness: Half of the tolerance ISO f7
Delivery condition: Hard Chrome Piston Rod ( HRC 15-20)
Quenched & Tempered (Q+T) Rod (HRC 28-32)
Induction Hardened Rod (HRC 55-62)
Q+T Induction Hardened Rod (HRC 60-65)
Corrosion resistance: Test in natural salt spray according to ASTM B 117-96 hours.
Packing: Anti-rust oil to be spread on rod surface and each rod to be packed in paper roll and then in wooden case.

1. Carbon steel balances durability, hardness, and wear resistance using formability, weldability, and durability;

2. Chrome plating provides corrosion resistance along with an Extremely reflective look

3.  High precision tolerances, which ensures when used to make hydraulic piston rod, it can fit the cylinder precisely.

4. Good Hardness: the surface hardness attaining HV850 minimal and upward, which not only help improve wear resistance but also help extend the life span of these chrome plated rods, thereby helping the consumer save the cost.

5. High performance of strength: The yield strength of chrome plated bars can be 75000 psi up to 100000 psi.

CHEMICAL COMPOSITION (%)

Material

        C%

Mn%

Si%

S%

P%

V%

Cr%

<=

CK45

0.42-0.50

0.50-0.80

0.17-0.37

0.035

0.035

ST52

<=0.22

<=1.6

<=0.55

0.035

0.035

20MnV6

0.16-0.22

1.30-1.70

0.10-0.50

0.035

0.035

0.10-0.20

42CrMo4

0.38-0.45

0.60-0.90

0.15-0.40

0.03

0.03

0.90-1.20

4140

0.38-0.43

0.75-1.0

0.15-0.35

0.04

0.04

0.80-1.10

40Cr

0.37-0.45

0.50-0.80

0.17-0.37

0.80-1.10

 

MECHANICAL PROPERTIES

Material

T.S. Mpa

Y.S. Mpa

E%

Impact

Condition

(min)

CK45

610

355

15

>39J

Hot Rolled
CK45

800

630

20

>41J

Q+T
ST52

630

520

14

Cold Drawn
20MnV6

750

590

12

>40J

Hot Rolled
42CrMo4

980

850

14

>47J

Q+T
4140

1080

930

12

Q+T
40Cr

1000

800

10

Q+T

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