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ASTM A519 1020 Cold Rolled Steel Tube , Carbon Steel Seamless Pipes For Mechanical Purpose
OVERVIEW
Carbon steel seamless steel pipe is kind of long steel. Steel pipe has hollow section, which is widely used as pipeline for conveying fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, steel pipe is lighter in weight under the same bending and torsional strength. It is an economic section steel. It is widely used in manufacturing structural and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction.
ASTM A519 GR. 1020 Cold Rolled Seamless Steel Tube is low hardenability low tensile Carbon Steel Tube, which is one of the most commonly used steel pipes for general purpose applications worldwide.
It offers excellent mechanical and chemical properties like high strength, ductility, weldability, and high corrosion resistance. It is normally used in turned and polished or cold drawn condition.
Due to its low carbon content, it is resistant to induction hardening or flame hardening. It will not respond to nitriding due to lack of alloying elements. However, carburization is possible in order to obtain case hardness more than Rc65 for smaller sections that reduce with an increase in section size.
AISI 1020 steel can be largely utilized in all industrial sectors in order to enhance weldability or machinability properties. It is used in a variety of applications due to its cold drew or turned and polished finish property.
If you are interested in our products, please contact us now for more detailed information. We assure best in class products with excellent services to our customers.
APPLICATIONS
AISI 1020 steel is used in case hardened condition. The applications of AISI 1020 steel are:
-It is used for simple structural application such as cold headed bolts.
-AISI 1020 steel also finds use in the following components:
STANDARD SPECIFICATIONS
| Standard | ASTM A519,DIN2391, BS 6323 etc |
| Material | AISI 1020 |
| Type | Seamless/SML |
| O.D | 6-219mm |
| W.T | 1-34mm |
| Length | 15 Mtr max Cut to Length available |
| Technique | Cold Rolled |
| Ends | Plain / Beveled / Vanished / Plastic Caps |
| Surface | Pickled,Passivation,Inside & Outside Mechanical Polishing, BA, EP |
| Heat Treatment | Solution Annealing and water rapid quenched, Bright Annealing |
| Delivery Conditions | +C (BK) Hard. No final treatment after final cold rolling. +LC (BKW) Soft. Final heat treatment is followed by a suitable drawing pass (limited reduction of area). +SR (BKS) Stress Relieved. After final cold rolling, the tubes are stress relieved in a controlled atmosphere. +A (GBK) Annealed. After final cold rolling, the tubes are annealed in a controlled atmosphere. +N (NBK) Normalized. After final cold rolling, the tubes are normalized in a controlled atmosphere. |
| Test Requirement | Eddy Current Test, Hydrostatic Test, UT,Penetrant Test,Air underwater pressure Test, PMI Test, Spectro Test, Intergranular Corrosion Test, Sharpy Impact Test,Hardness Test, Tension Test (Elongation,Yield Strength, Tensile Strength), Flarring Test etc. |
| Application | High Precision Cold Rolled Seamless Steel Tube is used in automotive industry, and in the occasion where the high accuracy, brightness, cleanness of the tube are required. |
| Capacity | 3000 tons/month. |
| Package | In bundles, plywood cases, wooden cases with water-proof package, etc. |
| Trade Terms | FOB, CIF, CFR |
| Payment Terms | T/T, L/C |
| Nearest Port | Shanghai Port |
| Main Market | Domestic Market, North America, Western Europe, South America, Eastern Asia etc. |
Relavent Standard & Grades Equivalency
-ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing
-EN 10297-1 Seamless Circular Steel Tubes for Mechanical and General Engineering Purpose
-DIN1629 Seamless Circular Tubes of Non-alloy Steels with Special Quality Requirements
-JIS G3444 Carbon Steel Tubes for General Structural Purposes
-JIS G3445 Carbon Steel Tubes for Machine Structural Purposes
TOLERANCE FOR SEAMLESS TUBING
| I.D tolerance (mm) | O.D tolerance (mm) | Straightness (mm) |
| H9-H12 | -/+0.5% | 0.20-0.80 |
Chemical Requirements, Composition, %
| Standard | Grade | C | Mn | P | S | Si | Cr |
| ASTM A519 | 1020 | 0.17-0.24 | 0.35-0.65 | 0.035 | 0.040 | 0.17-0.37 | 0.25 |
Mechanical properties
| Standard | Steel Grade | Yield strength MPa (>=) | Tensile strength MPa (>=) | Elongation % (>=) | Reduction of area % (>=) | Hardness Brinell |
| ASTM A519 | 1020 | 350 | 420 | 15 | 50 | 121 |
Weldability
AISI 1020 can be welded by performing the most common welding processes. In the cold drawn or turned and polished condition, it has better weldability. It has been suggested that the welding process should not be performed in heat treated or carburized condition.
Heat Treatment
Annealing
AISI 1020 steel is heated at 870°C - 910°C followed by holding for certain time until the temperature remains constant all over the section. It is then cooled in a furnace.
Carburizing
AISI 1020 is heated to between 880°C - 920°C in a suitable carburizing atmosphere followed by holding for sufficient amount of time to produce the needed carbon content and case depth. After this, refining/hardening and tempering processes are carried out to optimize the core and case properties.
Core Refining
AISI 1020 steel is slowly cooled and re-heated at 870°C - 900°C followed by holding until the temperature remains constant all over the section and quenching in water, oil or brine.
Case Hardening
After performing the core refining process, it is re-heated to 760°C - 780°C followed by holding until the temperature is consistent all over the section. It is then quenched in water.
Tempering
AISI 1020 steel is re-heated at 150°C - 200°C followed by holding for certain time until the temperature remains constant throughout the section. It is soaked for 1 hour per 25 mm of section and then cooled under normal atmosphere. By performing the tempering process, the toughness of the case will be improved and grinding cracks will be reduced.
Normalizing
AISI 1020 steel is heated at 890°C - 940°C followed by holding until the temperature remains constant throughout the section. It is soaked for 10 - 15 minutes and then cooled in still air.
Stress Relieving
AISI 1020 steel is heated to 650°C - 700°C followed by holding until the temperature remains constant all over the section and soaking for 1 hour per 25 mm of section. It is then cooled in still air.
Our Services
What we can offer?
-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.
-Machining and heat treatment are available.
-Also, we advise you in choosing the right materials.
Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
Package
In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or upon request
Payment & Delivery
1. Both T/T and L/C will be acceptable
2. Trade Terms: FOB, CIF, CFR
3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties
4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples
Shanghai Unite Steel Trading Co., Ltd
We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.
In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.
What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.