A519 seamless carbon and alloy steel mechanical tubing

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Product detail:

A519 seamless carbon and alloy steel mechanical tubing 

 

Seamless precision steel tubes are used variously:
• equipment engineering

• elevator tubes
• gas cylinders
• pit props
• hydraulic lines
• chain pipes
• bicycle/ motorcycle frames
• rivets
• pumps
• technical machinery
• cylinder, piston and telescopic tubes
• stabiliser tubes
• gear box tubes
• drive shaft tubes

 

Tubes for automotive industry:
• axles for gearboxes
• fuel injection lines
• piston bolts
• ball cages
• steering wheel shafts column tubes
• power-assisted steering tubes

 

ASTM A 519 Chemical requirements

Grade Designation	Chemical Composition Limits, %
	Carbon	Manganese	Phosphorus, max	Sulfur, max
MT 1010	0.05-0.15	0.30-0.60	0.040	0.050
MT 1015	0.10-0.20	0.30-0.60	0.040	0.050
1008	0.10 max	0.30-0.50	0.040	0.050
1010	0.08-0.13	0.30-0.60	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
1035	0.32-0.38	0.60-0.90	0.040	0.050
1045	0.43-0.50	0.60-0.90	0.040	0.050

 

Chemical requirements of Grade 4130:

Carbon, %                                           0.28-0.33

Manganese, %                                   0.40-0.60

Phosphorus, max,  %                        0.040

Sulfur, max,  %                                   0.040

Silicon, %                                           0.15-0.35

Chromium, %                                     0.80-1.10

Molybdenum, %                               0.15-0.25

 

Mechanical Properties

Grade Designation	Condition	Ultimate Strength, MPa	Yield Strength, MPa	Elogation in 2 in. or 50 mm, %
1020	CW	483	414	5
	SR	448	345	10
	A	331	193	30
	N	379	234	22
1025	CW	517	448	5
	SR	483	379	8
	A	365	207	25
	N	379	248	22
1035	CW	586	517	5
	SR	517	448	8
	A	414	228	25
	N	448	276	20
1045	CW	621	552	5
	SR	552	483	8
	A	448	241	20
	N	517	331	15
4130	SR	855	689	10
	A	552	414	25
	N	855	621	20

 

Your accurate descriptions in inquiry will help us give you what you need to make your search successful.  

Designation	Symbol	Description
Cold finished (hard)	BK	Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation.
Cold finished (soft)	BKW	The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming. (e.g. bending, expanding).
Cold finished and stress-relieved	BKS	Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed	GBK	The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized	NBK	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

 

• Mill test certificates will be issued according to EN10204/3.1B
• Packing: Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
• Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, No-destructive Test, Hydrostatic Test.
• Surface treatment: Oiled, black painted, hot dipped galvanized or phosphate coating as required.
• Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested. 

  Tests we apply to the tubes:

  1) Chemical Composition Analysis

  2) Mechanical Properties (Tensile strength, Yield strength,, Elongation, Hardness)

  3) Technological Test (Flattening test, Flaring Test, Bending Test, Hydraulic pressure test)

  4) Surface quality detection

  5) Eddy-current examination

  6) Visual test

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