Mechanical Pipe

Mechanical Pipe

Mechanical Tubing ASTM A519 Brief Introduction. Seamless mechanical tubing according to standard ASTM A519. It is manufactured from carbon and alloy steels for structural or other mechanical purposes involving machining or heat treating, where close tolerances, smooth finish, or definite...

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Product Details

 Mechanical Tubing

 

Brief Introduction.

Seamless mechanical tubing is based on standard ASTM A519. It is manufactured from carbon and alloy steels for structural or other mechanical purposes involving machining or heat treating, where close tolerances, smooth finish, or definite physical properties are important factors.

ASTM A519.jpg


Specificaton

Standard

ASTM A519

Steel Grade

1020, 1025, 1035, 1045, 4130, 4140

Size Range

Out diameter:10-324mm
Wall Tickness:1-30mm
Length:14000mm max

Certificate

The products are supplied with 3.1 specific test certificates, according to EN 10204. Certification according to 3.2 can be agreed at the time of ordering.

Application:

For mechanical engineering

For mechanical and pressure use,and also for transporting steam,water,gas and etc.


ASTM A519.jpg

Description

This specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The seamless tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties. The tubes shall be furnished in the following shapes: round, square, rectangular and special sections. Heat analysis shall be made to determine the percentages of the elements specified. If secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The tubing shall be coated with a film of oil before shaping to retard rust when specified.


Steel Grade and Chemical Composition (%)

Grade

C

Mn

P≤

S≤

Si

Cr

Mo

1008

≤0.10

0.30-0.50 

0.040

0.050

-

-

-

1010

0.08-0.13

0.30-0.60

0.040

0.050

-

-

-

1018

0.15-0.20

0.60-0.90

0.040

0.050

-

-

-

1020

0.18-0.23

0.30-0.60

0.040

0.050

-

-

-

1025

0.22-0.28

0.30-0.60

0.040

0.050

-

-

-

1026

0.22-0.28

0.60-0.90

0.040

0.050

-

-

-

4130

0.28-0.33

0.40-0.60

0.040

0.050

0.15-0.35

0.80-1.10

0.15-0.25

4140

0.38-0.43

0.75-1.00

0.040

0.050

0.15-0.35

0.80-1.10

0.15-0.25


Mechanical Properties

Grade

Condition

MPa Tenslle Point

Yield Point

Elongation

1020

CW

≥414

≥483

≥5%


SR

≥345

≥448

≥10%


A

≥193

≥331

≥30%


N

≥234

≥379

≥22%

1025

CW

≥448

≥517

≥5%


SR

≥379

≥483

≥8%


A

≥207

≥365

≥25%


N

≥248

≥379

≥22%

4130

SR

≥586

≥724

≥10%


A

≥379

≥517

≥30%


N

≥414

≥621

≥20%

4140

SR

≥689

≥855

≥10%


A

≥414

≥552

≥25%


N

≥621

≥855

≥20%

Please note the meaning of below abbreviation in table :

· HR----Hot Rolled

· CW----Cold Worked

· SR----Stress Relieved

· A----Annealed

· N----Normalized


Dimension Tolerances


Pipe Type

Pipe Sizes

Tolerances

Cold Drawn

OD

≤48.3mm

±0.40mm

WT

≥60.3mm

±1%mm



Edit by Mr. Bruce Zhang of KRM/BSW

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