ASTM A519 GRADE 1018 COLD DRAWN CARBON STEEL TUBING
AISI 1018 Steel is a Mild/Low Carbon Steel that has an excellent weldability and produces a uniform and
harder case and it is a considered as the best steel for carburized
parts. AISI 1018 mild/low carbon steel offers a good balance of
tougness, strength and ductility.
With higher mechanical properties, this AISI 1018 Cold Drawn Steel also includes improved maching characteristics along with
hardness, toughness and longer durability. These specific
manufacturing processes are used for surface preparation, chemical
composition, rollig and heating processes.
All thers processes develop a supreme quality product that is
suited to fabrication processes such as welding, forging,
machining, cold drawing and heat treating.
If you are interested in our prodcuts, please contact us now, for
more detailed information. We assure best in class products with
excellent services to our customers.
APPLICATIONS
- It is used in bending, crimping and swaging processes.
- Carburized parts that include worms, gears, pins, dowels,
non-critical components of tool and die sets, tool holders,
pinions, machine parts, ratchets, dowels and chain pins use AISI
1018 mild/low carbon steel.
- It is widely used for fixtures, mounting plates and spacers.
- It is suitably used in applications that do not need high strength
of alloy steels and high carbon.
- It provides high surface hardness and a soft core to parts that
include worms, dogs, pins, liners, machinery parts, special bolts,
ratchets, chain pins, oil tool slips, tie rods, anchor pins, studs
etc.
- It is used to improve drilling, machining, threading and punching
processes.
- It is used to prevent cracking in severe bends.
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
-JIS G3444 Carbon Steel Tubes for General Structural Purposes
-JIS G3445 Carbon Steel Tubes for Machine Structural Purposes
Chemical Composition & Mechanical properties
| 1018 Mild (low-carbon) steel |
| Mechanical Properties | Ultimate Tensile Strength, psi | 63,800 |
| Yield Strength, psi | 53,700 |
| Elongation | 15.0% |
| Rockwell Hardness | B71 |
| Chemical Composition | Iron (Fe) | 98.81 - 99.26% |
| Carbon (C) | 0.18% |
| Manganese (Mn) | 0.6 - 0.9% |
| Phosphorus (P) | 0.04% max |
| Sulfur (S) | 0.05% max |
Heat Treatment
The heat treatment for AISI 1018 mild/low carbon steel consists of
the following processes:
Normalizing
AISI 1018 mild/low carbon steel should be heated at 890°C – 940°C
and then cooled in still air.
Forging
This process requires heating between 1150°C – 1280°C and AISI 1018
mild/low carbon steel is held until the temperature becomes
constant.
900°C is the minimum temperature required for the forging process.
The steel is then cooled in air after this process.
Tempering
AISI 1018 mild/low carbon steel is tempered at between 150°C –
200°C for improvement of case toughness. This process has little or
no effect on hardness.
The occurrence of grinding cracks is reduced when AISI 1018
mild/low carbon steel is tempered at the above mentioned
temperature.
Annealing
The AISI 1018 mild/low carbon steel is heated at 870°C – 910°C and
allowed to cool in a furnace
Stress Relieving
500°C – 700°C is required to relieve stress in AISI 1018 mild/low
carbon steel that is later cooled down in still air.
Case Hardening
This process requires heating to be carried out between 780°C –
820°C. AISI 1018 mild/low carbon steel is then quenched in water.
Core Refining
This is an optional process that requires heating at 880°C – 920°C.
AISI 1018 mild/low carbon steel after being heated is moistened in
oil or water.
Carburizing
Carburizing takes place at 880°C – 920°C.
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.
