WE
ARE PURISTS

Properties of iron and steel are influenced by the amount of carbon and other alloying elements. ALLIEDPUREIRON® is:
  • purest iron
    produced in
    steelworks
  • it is not alloyed
    with any foreign
    elements
  • it contains
    virtually zero
    natural
    impurities

ALLIEDPUREIRON® is very complex to manufacture. Thanks to its exceptionally high level of purity - approx. 99.9% - it provides outstanding performance. It is thus suited for a wide variety of applications. These range from sacrificial anodes to high-tech applications in the field of research and development for the aerospace and automotive industries.
properties

PURE IRON MATERIAL DATA SHEET
PURE IRON ALLIEDPUREIRON®

CHEMICAL COMPOSITION
(REFERENCE ANALYSiS - MAXIMUM VALUES IN %)
ElementsCMnPS
ALLIEDPUREIRON0,0100,100,0050,004
C 150,12 - 0,180,25 - 0,50,0450,045
AISI 1006≤ 0,080,25-0,4≤ 0,03≤ 0,05


CHEMICAL COMPOSITION
(AVERAGE VALUES TYPICAL FOR THE PRODUCTION PROCESS IN %)

ElementsCMnPSNCu
ALLIEDPUREIRON0,0020,040,0040,0030,0040,01


MECHANICAL VALUES (AVERAGE VALUES, AS ROLLED)
 yield strength
Re N/mm2
tensile strength
Rm N/mm2
elongation A
(L=5d) %
ALLIEDPUREIRON20032040
C 15 E30044035


PHYSICAL PROPERTIES
Density at 20 °C7,86 kg/dm³
Elastic modulus207 kN/mm²
Linear thermal expansion coefficient
temperature range 0° C-100° C
12·10-6 1/°C
Melting point1.536 °C

ELECTRICAL AND MAGNETIC
PROPERTIES

The purity of a metal determines its electrical conductivity. This is why materials that are as pure as possible are used for all conducting parts. Electrical conductivity is affected even by very low proportions of C, Si, P, S, Mn and Cu, and these proportions are higher in the usual commercial grades of steel. ALLIEDPUREIRON®, on the other hand, is sure to provide significantly better conductivity than other soft, unalloyed types of steel. Experience has shown that the specific resistance of ALLIEDPUREIRON®, at 20° C temperature of the material, is ≈ 0.11 Ohm x mm²/m. Because of its high magnetic permeability, ALLIEDPUREIRON® is also a material of choice for DC magnetisation of solid parts. It has a saturation of approx. 21,000 Gauss, and can thus be used wherever maximum induction is required. Particularly noteworthy characteristics of the pure and soft ALLIEDPUREIRON® are its high permeability and very low coercive force.

It also has outstanding magnetic properties, such as high magnetic saturation, low coercivity, high permeability, as well as excellent conductivity, especially in medium induction ranges.

Each cold working process leads to stresses in the microstructure of the material, and thus to a deterioration of its magnetic properties. That is why finished parts generally need to undergo annealing when they are in final form. You will find an example on the following pages. However, our experience shows that ALLIEDPUREIRON® reaches the magnetic values required by customers even without a final annealing in various applications. This is due to its high grade of purity. Precise values for specific applications can be demonstrated in experiments.

The following values should be taken as guidelines:

Initial permeability: 300-500, Max. permeability: 2.000-20.000, Coercive force: 15-160 A/m, Saturation induction: 2.15 T.



application characteristics

APPLICATION CHARACTERISTICS

Corrosion
The purer the iron, the greater its resistance to electrolytic self-destruction, which occurs at the interfaces between the iron crystals and the accumulated alloying elements.

Chemical interactions
ALLIEDPUREIRON® is partially resistant to acids, bases, and salt solutions, which react with the element Fe. Although ALLIEDPUREIRON® cannot completely replace other rust- and acid-resistant materials, it offers advantages where certain chemical degradation of unalloyed metallic materials is acceptable. Compared to unalloyed steels, the homogeneous structure and high purity of ALLIEDPUREIRON® makes it more resistant to many corroding chemicals.

Oxidation
he purer the iron, the better its oxidation behavior (scaling). It plays a major role particularly in thermal processing and other thermal applications. Oxidative scaling not only prevents the transfer of heat; it also has a destructive effect by reducing the thickness of the material.
ALLIEDPUREIRON® features increased resistance due to its firmly adhering, protective layers of scale.
applications

From Electromagnetic
applications
up to hardening



Because of its 99,9% pure iron ALLIEDPUREIRON® can be used in a large scope of application. From high-technology up to various handcrafts.
To know more about the applicationfields click on the pictures below.


Electromagnetic applications
Electrical components
Soft metal gaskets
CP - cathodic protection
Ornamental blacksmithing
Hot-dip galvanising
Hardening


machining

MACHINING

Turning
ALLIEDPUREIRON® can be machined using both high-speed steel tools and carbide tools. It is extremely important that the tools are sharpened and the cutting data is carefully selected, otherwise ALLIEDPUREIRON® will lubricate. Small feed rate and deep cutting will ensure most efficient rough turning. With fine turning, the feed rate should not exceed 0.1 mm if optimal surface quality and dimensional accuracy are required. When cutting data is properly selected, the turned surface appears bright; otherwise it is matt. Extremely fine-grained cutting surface is also important. Tip: Generous cooling and lubrication are essential to protect the tool and the workpiece. It is recommended to use a mineral oil with 1-1.5% sulphur and 5% grease.

Milling
For a fine surface, use hobbing cutters with lead angles of 45-52°. Radial rake angle: 30°. For optimal cutting speed of 25 - 45 m/min at 19 - 32 mm/min feed rate. Radial rake angle when working with side milling cutters: 10°. Tip: Check that the clearance hole of the tools is correct. For cooling and lubricating, observe the same instructions as for turning.

Drilling
Generally, high-speed steel drills with an acute angle of 100° provide satisfactory results. Lead angle at the cutting edge: approx. 12°. Cutting speed 20-30 m/min at a feed rate of 0.02-0.1 mm/revolution.

Threading
Tip: Select a slightly larger core diameter of the thread than usual. This will greatly reduce the risk of taps breakage, and ensure a clean thread. Non-cutting thread forming is recommended. Rake angle: approx. 15-20° Cutting speed: 4 6 m/min.

NON-CUTTING
PROCESSING

Non-cutting forming
Due to its mechanical properties, ALLIEDPUREIRON® offers exceptional advantages in cold working with a high degree of deformation. During
  • Cutting
  • Drawing
  • Deep-drawing
  • Pressing
  • Cold extrusion

there is minimal compressive stress and resistance to deformation. That ensures high levels of deformation. With a controlled deformation, the tensile strength can reach twice the initial value.
Tip: Hot working by rolling, forging, bending, flanging, and pressing must not take place in the red-short area from 850 to 1.050°.