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[China]
Address: Room 1109, Loft Office, Green Land International Plaza, No. 275-8 Guoding East Road, Shanghai 200433, P.R. China. (admin(a)shunitesteel.com)
Contact name:Eric
SHANGHAI UNITE STEEL |
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1020/S20C Cold Drawn Seamless Steel Tube for Mechanical Purpose, OD: 6-426mm; WT: 1-40mm
OVERVIEW
ASTM A519 GR. 1020 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
High Precision Cold Drawned Seamless Steel Tube is used in automotive industry, and in the occasion where the high accuracy, brightness, cleanness of the tube are required.
STANDARD SPECIFICATIONS
| Process | Cold Drawn Seamless Pipes |
| Shape | Round |
| Size Range | 6-426mm OD |
| Thickness | 1-40mm WT |
| Pipe End | Plain / Beveled / Vanished / Plastic Caps |
| Coating | Black / Galvanised / 3LPE / Turned / Peeled / Grinded / Polished / Anti – Corrosion Oil |
| Length | 15 Mtr max Cut to Length available |
| Heat Treatment | Spheroidizing / Full Annealing / Process Annealing / Isothermal Annealing / Normalizing / Quenching / Martempering (Marquenching) / Quench And Tempering / Austempering |
| Application | Oil & Gas / Hydro Carbon Process / Automotive / Boiler, Heat Exchanger / Plumbing, HVAC & Firefighting / Structural / General Engineering / Railways / Sewage & Waterwell |
| Quality Inspection | Third Party inspection is acceptable (SGS, BV etc.) |
TOLERANCE FOR SEAMLESS TUBING
| I.D tolerance (mm) | O.D tolerance (mm) | Straightness (mm) |
| H9-H12 | -/+0.5% | 0.20-0.80 |
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
-DIN 2391 Seamless Precison Steel Tubes
-JIS G3444 Carbon Steel Tubes for General Structural Purposes
-JIS G3445 Carbon Steel Tubes for Machine Structural Purposes
-BS6323 Specification for Seamless and Welded Steel Tubes for Automobile, Mechanical and General Engineering Purposes
| Country | USA | EN | Japan | China |
| Standard | ASTM A519 | EN 10297 | JIS G3444 | GB/T 8162 |
| Grades | 1020 | C22E | S20C | 20 |
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 |
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.
