Precision Cold Drawn Steel Tube Alloy Steel Tube 4140 Seamless Astm A519 4140
Brand Name:UST
Certification:ISO 9001
Model Number:OD: 6-426mm; WT: 1-40mm
Minimum Order Quantity:MOQ: 3 ton
Delivery Time:Within 15-35 days
Payment Terms:L/C, T/T, D/A, D/P
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Location:
Shanghai Shanghai 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)
Supplier`s last login times:
within 27 hours
Product Details
Company Profile
Product Details
ASTM A519 GRADE 4140 COLD DRAWN ALLOY STEEL SEAMLESS PIPES / TUBES
OVERVIEW
ASTM A519 covers several grades of carbon and alloy steel seamless mechanical tubing. The standard is also acceptable in the manufacture of piping. It is manufactured by hot working and then cold finishing the steel into round, square, rectangle or special shapes.
AISI 4140 Seamless Mechanical Tubing are medium carbon alloy grades, which are widely used for many general purpose applications that require high tensile strength and toughness. The addition of chromium and molybdenum as alloying elements, combined with heat treatment, provides the combined advantage of hardness, ductility, and strength.
Benefits of Round 4140 Alloy Seamless Mechanical Tubing
- Superior tensile strength and toughness
- High strength to weight ratio
- Easily heat treatable to a broad range of strength, machinability, and hardness.
- Applications: aircraft components, hydraulic cylinders, rollers, structural apps, truck and automotive parts.
Commom Applications
- Back-up and support tooling
- Fixtures
- Gears and gear racks
- Machinery parts and components
- Mold bases
STANDARD SPECIFICATIONS
| Process | Seamless Pipes |
| Shape | Round |
| Technique | Cold Drawn |
| 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 |
Relevant 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
-DIN2391 Seamless Precision Steel Tubes
-JIS G3441 Alloy Steel Tubes for Machine Purposes
COMMON 4140 STEEL EQUIVALENCY
| USA | German | Japan | China |
| 4140 | 1.7225/ 42crmo4 | SCM440 | 42CrMo |
Chemical Requirements, Composition, %
| C | Mn | P | S | Si | Cr | Mo |
| 0.38-0.43 | 0.75-1.00 | 0.035 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
ASME SA519 GR.4130 Standard Pipes Mechanical Properties
| Grade | Condition | MPa Tensile Point | Yield Point | Elongation |
4140 | HF | ≥855 | ≥621 | ≥15% |
| SR | ≥855 | ≥689 | ≥10% | |
| A | ≥552 | ≥414 | ≥25% | |
| N | ≥855 | ≥621 | ≥20% | |
| Q+T (Quenched and tempered.) | As your requirements | |||
PROCESSING
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
Company Information
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!
FAQ
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.
Precision Cold Drawn Steel Tube Alloy Steel Tube 4140 Seamless Astm A519 4140
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