ASTM A519 AISI4130 AISI4140 Seamless Alloy Steel Tube

Product Description

TORICH ASTM A519 AISI4130 AISI4140 Seamless Alloy Steel Tubes

Standard	ASTM A519
Matrial	AISI4130 AISI4140
Size	OD: 6-350mm WT: 1-50mm Length: 1-12m
Manufacture	Tubes are made by seamless process. At the manufacturer's option, tubing may be furnished either hot finished or cold finished.
Condition Sizing Methods	1. Hot-Finished Mechanical Tubing 2. Cold-Worked Mechanical Tubing 3. Rough -Turned Mechanical Tubing 4. Ground Mechanical Tubing
Thermal Treatment:	1. A-Annealed 2. N-Normalized 3. QT-Quenched and Tempered 4. SR-Stress relieved or Finish Anneal The tubes shall be pickled free of scale,. When bright annealing is used, pickling is not necessary.
Workmanship, Finish, and Appeaerance	The tubing shall be free of laps, cracks, seams, and other defects as is consistent with good commercial practice. The surface finish will be compatible with the condition to which it is ordered.

 

Chemical Requirements

Grade	C	Si	Mn	P≤	S≤	Cr	Mo
4130	0.28-0.33	0.15-0.35	0.40-0.60	0.040	0.040	0.80-1.10	0.15-0.25
4140	0.33-0.43	0.15-0.35	0.75-1.00	0.040	0.040	0.80-1.10	0.15-0.25

 

Mechanical Properties

Grade	Condition	Ultimat Strength ksi MPa	Yeild Strength ksi MPa	Elongation %	Rockwell Hardness B Scale
4130	HR	90 621	70 483	20	89
	SR	105 724	85 586	10	95
	A	75 517	55 379	30	81
	N	90 621	60 414	20	89
4040	HR	120 855	90 310	15	100
	SR	120 855	100 689	10	100
	A	80 552	60 414	25	85
	N	120 855	90 621	20	100

Production Show

1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

FAQ

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact us

TORICH ASTM A519 AISI4130 AISI4140 Seamless Alloy Steel Tubes