SAE J525 Hydraulic Tubing

Table of Content

SAE J525 Hydraulic Tube

In addition to welded hydraulic tubing, SA179tubes.com produces cold drawn and annealed seamless low carbon steel pressure tubing suitable for use as hydraulic lines and in other applications requiring flexible and bendable tubing. Hoses are available in a range of 20 foot lengths to meet SAE J525 Hydraulic Tubes specifications. This material is made from .18 maximum carbon steel, which is dead soft when produced to allow for easy bending and flaring during SAE J525 hydraulic tubes fluid line applications.In order to produce mother hollows, flat sheets of raw material are rolled on a weld mill. AISI class 1008 and 1010, as well as 1020 and 1026, are available. After undergoing a normalising heat treatment, the tube is suitable for cold working

As defined in this standard, normalised electric-resistance welded, cold-drawn, single-wall, low-carbon steel pressure tubing is to be used for pressure lines, as well as for other applications that require the tubing to be flexible, capable of flaring, forming, and brazing. For SAE J525 hydraulic tubes applications and other applications that require tubing of a quality suitable for flaring and bending, SA179tubes.com stocks a large stock of SAE J525 Hydraulic Tubes welded tubing. In addition to their exceptionally clean and bright OD and ID, all our tubes are shipped with capped ends for contamination prevention and cleanliness. In addition to supplying low carbon steel pipe and tubing, SA179tubes.com is also a leading manufacturer, supplier, exporter, and distributor. The welded tubing we supply and stock is based on SAE J525 Hydraulic Tubes and is used for hydraulic parts.Tubes that are specified by their diameters (or their inner diameters) and their nominal wall thickness must have tolerances corresponding to the diameter and no thickness variation exceeding 10%.

SAE J525 Hydraulic Tubes Quality

MANUFACTURE – After normalising the tubing, a cold working operation is to be performed. In cold working, at least 8 percent of the walls need to be reduced, resulting in a minimum reduction of areas of 15 percent. Tubing shall be cold-worked in such a manner that the annealing results in a product that meets all specifications of this specification.

Pressure Ratings, Steel Tubing for General Hydraulic System Applications

Based on SAE J525 Hydraulic Tubes, this chart indicates the nominal pressure ratings for tubing products. Based on Lame formula with 12,500 PSI (86MPa) stress factors and a 4:1 design factor, these pressure ratings were derived. For the wall thicknesses shown in bold, SAE J533 recommends 37 degrees of single flaring for tubing with a normal wall thickness. SAE J525 Hydraulic Tubes systems perform satisfactorily at many different pressures based on a variety of factors. The values listed below should not be construed as standards or specifications, nor as minimum requirements. SAE J525 Hydraulic Tubes Equivalent Specifications

ASTM /ASME A214 (Except for Average Wall)

AISI 1008/1010

SAE J525 Hydraulic Tubes Chemical Composition

Carbon

0.06-0.18

Manganese

0.30-0.6

Phosphorus

0.04max

Sulfur

0.05

SAE J525 Hydraulic Tubes Mechanical Property

Yield Strength, min

170 MPa

Ultimate Strength, min

310 MPa

Elongation in 50 mm, min

35%

Hardness (Rockwell B), max

65

SAE J525 Hydraulic Tubes Welded Tubing Tolerance

Nominal Tubing OD

Tube Tolerance, OD±mm/ID±mm

Up to 9.50

0.05

Over 9.50 to 15.88 inclusive

0.06

Over 15.88 to 50.80 inclusive

0.08

Over 50.80 to 63.50 inclusive

0.10

Over 63.50 to 76.20 inclusive

0.13

Over 76.20 to 100.00 inclusive

0.15

SAE J525 Hydraulic Tubes Pressure Rating

Nominal Tube

O.D.

inch mm

Nominal Tube Wall Thickness

0.028

0.035

0.049

0.065

0.083

0.093

0.109

0.12

0.134

0.148

0.156

0.188

0.71mm

0.89mm

1.24mm

1.65mm

2.11mm

2.41mm

2.77mm

3.05mm

3.40mm

3.76mm

3.96mm

4.78mm

Reference Working Pressures at 4:1 Design Factor(psi/Mpa)

  

0.125

6650

8450

           

3.18

46

58.5

           

0.188

4250

5450

           

4.77

29.5

37.5

           

0.25

3100

3950

5750

7800

         

6.35

21.5

27

39.5

54

         

0.312

2450

3100

4500

6150

         

7.92

16.8

21.5

31

42.5

         

0.375

2000

2550

3650

5000

6550

7600

       

9.53

13.8

17.6

25

34.5

45

52.5

       

0.5

1850

2700

3650

4800

5550

6450

7200

      

12.7

12.8

18.6

25

33

38.5

44.5

49.5

      

0.625

1500

2100

2850

3750

4350

5050

5600

      

15.88

10.4

14.5

19.6

26

30

35

38.5

      

0.75

1200

1750

2350

3050

3550

4150

4600

      

19.05

8.3

12

16.2

21

24.5

28.5

31.5

      

0.875

1050

1500

2000

2600

3000

3500

3900

      

22.23

7.2

10.4

13.8

18

20.5

24

27

      

1

900

1300

1750

2250

2600

3000

3350

3800

4200

    

25.4

6.2

9

12

15.5

18

20.5

23

26

29

    

1.125

1150

1550

2000

2300

2650

2950

3300

3700

     

28.58

7.9

10.6

13.8

15.8

18.2

20.5

23

25.5

     

1.25

1000

1350

1750

2050

2350

2650

2950

3300

3500

4300

   

31.75

6.9

9.3

12

14.2

16.2

18.2

20.5

23

24

29.5

   

1.5

1150

1450

1700

1950

2150

2450

2700

2850

3500

    

38.1

7.9

10

11.8

13.5

14.8

16.8

18.6

19.6

24

    

1.75

950

1250

1450

1650

1850

2050

2300

2400

2950

    

44.45

6.6

8.6

10

11.4

12.8

14.2

15.8

16.6

20.5

    

2

850

1100

1250

1450

1600

1800

2000

2100

2550

    

50.8

5.9

7.6

8.6

10

11

12.4

13.8

14.5

     

Features

  • EN10204 3.1.B
  • PED certified
  • OD x ID
  • Uniform Lengths
  • Dual Certified
  • End capped
  • Bright finish
  • .313”-4.25” outside diameter
  • .035”-.25” wall thickness
  • The tubing shall conform to the following requirements:

Tensile Strength

45,000 psi minimum

Yield

25,000 minimum

Elongation in 2 inch

35 percent* minimum

Rockwell Hardness

B65 maximum

* For tubes with OD of 3/8 inch and/or wall thickness of 0.035, a minimum elongation of 30 percent is permitted.

FLATTENING TEST — A section at least three inches in length shall be taken from every 1500 feet or less of finished tubing and shall be flattened between parallel plates to three times the wall thickness of the tube. The weld shall be placed at a point of 90 degrees from the direction of applied force. Any cracking or flaws revealed by this test shall be cause for rejection. Superficial ruptures resulting from minor surface imperfections shall not be cause for rejection.

REVERSE FLATTENING TEST — A section at least four inches in length shall be taken from every 1500 feet or less of finished tubing and split longitudinally 90 degrees on each side of the weld and the sample opened and flattened. There shall be no evidence of cracks or lack of penetration or overlaps resulting from flash removal in the weld.

SAE J525 Hydraulic Tubes Welded Hydraulic Tubing

EXPANSION TEST — A suitable specimen shall be taken from each 1500 feet or less of tubing and subjected to an expansion over a plug. The outside diameter must be expanded 25 percent throughout a length equal to the outside diameter of the tubing or one inch, whichever is greater. There shall be no evidence of cracking in this test.

PRESSURE OR ELECtrICAL TEST — Tubing supplied under this specification shall have been hydrostatically tested at a fibre stress of 20,000 psi or at an actual pressure of 5,000 psi, whichever is less, based on the applicable minimum wall, or tested by use of a nondestructive electrical test approved by purchaser.

SAE J525 Hydraulic Tubes Dimensions

When tubing is specified by outside diameter and inside diameter, the tolerances shown in the table shall apply.

Nominal Outside Diameter, Inches

OD

inches

ID

inches

3/8

±0.002

±0.005

Over 3/8 to 5/8 inclusive

±0.0025

±0.0025

Over 5/8 to 2 inclusive

±0.003

±0.003

Over 2 to 2-1/2 inclusive

±0.004

±0.004

When tubing is specified by the outside diameter (or the inside diameter) and the nominal wall thickness, the tolerances for the specified diameter shall apply and the wall thickness shall not vary more than plus or minus 10 percent.

Countries We Supply to

Oman, Iran, Finland, Jordan, Ecuador, Tibet, Nigeria, Malaysia, Italy, Hong Kong, United Kingdom, Venezuela, Algeria, Namibia, Croatia, Poland, Gabon, Iran, Norway, Azerbaijan, Iraq, Mexico, Egypt, Argentina, Pakistan, Lithuania, Bhutan, Costa Rica, China, Colombia, Peru, Thailand, Ukraine, Singapore, Japan, South Korea, New Zealand, Morocco, Kenya, Belarus, Brazil, Turkey, Kazakhstan, Hungary, Germany, United States, Vietnam, Sri Lanka, Ireland, Czech Republic, India, Gambia, United Arab Emirates, Lebanon, Mongolia, Portugal, Nigeria, Bahrain, Kuwait, Yemen, Romania, Indonesia, Chile, Nepal, Ghana, Saudi Arabia, France, Taiwan, Qatar, Denmark, Austria, Afghanistan, Spain, Mexico, Belgium, Puerto Rico, Slovakia, Serbia, South Africa, Chile, Bangladesh, Libya, Greece, Russia, Switzerland, Trinidad & Tobago,Tunisia, Bulgaria, Estonia, Canada, Bolivia, Sweden, Poland, Australia, Philippines, Angola, Israel, Zimbabwe, Macau, Netherlands.

Countries We Export To

Kuwait, Bolivia, Peru, Pakistan, Brazil, Bhutan, Nepal, Canada, Kazakhstan, Trinidad & Tobago,Tunisia, Israel, Lithuania, Argentina, Belarus, Yemen, Ghana, Switzerland, Belgium, Nigeria, Gambia, Spain, Sri Lanka, Vietnam, Oman, Finland, Egypt, Mexico, Mongolia, Sweden, Norway, Morocco, Saudi Arabia, Gabon, Algeria, South Africa, Germany, Bulgaria, Iran, South Korea, Qatar, Estonia, Costa Rica, Azerbaijan, Iran, Hong Kong, United States, Greece, Russia, Iraq, Kenya, Malaysia, Taiwan, Bahrain, Netherlands, Angola, Zimbabwe, Lebanon, Tibet, Colombia, Italy, New Zealand, Philippines, Namibia, Poland, Chile, France, Romania, Serbia, Indonesia, Australia, Turkey, India, Ecuador, Slovakia, Hungary, Chile, Bangladesh, Denmark, Singapore, Czech Republic, Ireland, United Kingdom, Venezuela, Libya, Mexico, Japan, Austria, Afghanistan, Ukraine, Puerto Rico, Croatia, United Arab Emirates, Poland, Macau, Portugal, Nigeria, Thailand, China, Jordan.

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