Aluminium Alloy Resources
SPECIALISTS IN SEAMLESS AND COLD DRAWN ALLOYS

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Comparison of seamless pipes under different extrusion modes
Methods of extrusion
Fixed needle forward extrusion
Follow-up needle forward extrusion
Reversed extrusion
Items
Extrusion force
Large
Medium
Small
Operation
Simple
Simple
Complicated
Products appearance and size
1. Stable and uniform internal and external size.
2. Wall thickness difference better than the international advanced level.		 1. Unstable internal diameter size.
2. Big wall thickness difference.		 1. Unstable internal diameter size.
2. Controllable wall thickness.
Product tissue
The casting ingot surface metal is not fluid, few distortion and layer disadvantage. Few distortion and layer disadvantage. Easy layer disadvantage.
Surface quality
Uniform and smooth internal and external wall. Smooth external wall fairly smooth internal wall. Uniform and smooth internal and external wall.
Suitable for
1. Suitable for all aluminium alloys, especially the series 1, 3 and 6 seamless pipes.
2. Extrusion abnormal seamless pipe such as square pipe, ellipse pipe and ribbon pipe.		 1. Suitable for producing most of the aluminium alloy
2. Only round pipes.		 1. Suitable for producing hard aluminium seamless alloy pipes (Series 2, 5 and 7).
2. Only round pipes.


Alloy ingredients and purpose
Elements
Si
Fe
Cu
Mn
Mg
Cr
Zn
Ti
Zr
Purpose
Alloy
3003
0.6
0.7
0.05-0.20
1.0-1.50
0.05Max
0.05Max
0.1Max
0.05Max
0.05Max
Condensing pipe, chemical materials
6063
0.2-0.6
0.35
0.1Max
0.1Max
0.45-0.9Max
0.1Max
0.1Max
0.1Max
0.05Max
Building materials, irrigation pipes, rails, radiation equipment etc.
6061
0.4-0.8
0.7
0.15-0.40
0.15Max
0.8-1.2
0.04-0.35
0.25Max
0.15Max
0.05Max
Bike shelf, vehicle and ships profiles
6082
0.7-1.3
0.5
0.1Max
0.40-1.0
0.6-1.2
0.25Max
0.2Max
0.1Max
0.05Max
Extrusion materials for car industry
7005

0.35
0.4
0.1Max
0.2-0.7
1.0-1.8
0.06-0.20
4.0-5.0
0.01-0.06
0.08-0.20
Frame and sports articles


Alloy features

Features
Density
Kg/m3
liquidus Temperature
¡æ
solidus temperature
¡æ
elastic modulus
Gpa
tensile strength
mpa
tensile stretch
%
Hardness
HW
Anti-corrosion
Welding
Cutting
Processing
Alloy
3003
2730
654
643
70
80-200
10-45
0-7
Excellent
Fine
Fairly
Excellent
6063
2710
655
615
70
90-310
9-25
0-14
Excellent
Excellent
Fine
Excellent
6061
2710
652
582
70
110-330
9-25
0-17
Excellent
Excellent
Excellent
Fine
6082
2710
650
588
70
120-350
10-20
0-17.5
Excellent
Excellent
Excellent
Fine
7005
2780
643
604
71
180-400
10-20
3-18
Fine
Fine
Excellent
Fine
 

Test equipment
The company is fully equipped with advanced test equipment capable of fast testing to international standards. Our imported Baird computer spectrometer enables us to analyse the ingredients of most alloys in accordance with GB/T3190-1996. We can also analyse alloy ingredients using conventional methods. Our electronic universal test machine is capable of making several mechanical performance tests such as pulling, compressing and bending. The vertical metalloscope is capable of testing the nitriding layer of casting metallogenetic tissue and mould. Other test equipment also include:  Micro-control spectrophotometers, a portable sclerometer, a vertical HRBV Accelerometer and wall thickness micrometer, internal diameter micrometers, digital display callipers etc.