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    Material Unibar 400-15

    Unibar 400-15

    Grade Colour Code: Yellow
    SG/Nodular Iron

    Comparative Specification:

    • EN-GJS-400-15C according to DIN EN 16482
    • EN-GJS-400-15 according to BS EN 1563 (2011)

    Unibar 400-15 offers superior machinability and surface finish combined with good fatigue strength, electrical conductivity and magnetic permeability. Noise and vibration damping are good in this grade.

    Profile and Size Range

    Standard cut length of our cast iron products is 3080mm, other lengths available on request.

    Round Square Rectangle Special Profiles
    25mm – 700mm 25mm x 25mm – 550mm x 550mm Up to 780mm x 550mm Sizes and profiles to customer design available on request

    Mechanical Properties

    Material Section
    mm
    Tensile Strength
    N/mm²
    0.2% 
    Proof Stress
    Elongation % Hardness
    (BHN)
    Matrix
    20 < D ≤ 60 400 250 15 120 - 180 Ferritic
      60 < D ≤ 120 390 250 14
    120 < D ≤ 400 370 240 11
      400 < D ≤ 700 370 240 11

    Microstructure

    Contains type V & VI nodular (spheroidal) graphite in accordance with ISO 945. The rim is predominantly ferritic (>90%). The core matrix is essentially ferritic with ≤10% pearlite. Chill carbides will be less than 5%, well dispersed.

    Heat Treat Response

    Unibar 400-15 is not recommended for heat treatment, the higher pearlitic Unibar 600-3 and Unibar 700-2 are more suitable.

    Ancillary Processes

    Both, our foundries and our local distribution centres offer various services to deliver pre-machined products to our customers. Pre-machined Unibar material will save valuable production time, improve the cost effectiveness and eliminate waste in your own production, allowing you to focus on the key design elements of your products.

    Cutting

    Cutting to specified length in quantities as little as one piece to large volumes, prepared to meet the requirement of your automatic machining systems.

    Turning

    Turning of round bars to required size to meet specific requirements and to minimise the machining operations of our customers. Unibar turned therefore comes with a standard tolerance of +1mm, although after consultation we can offer alternatives to suit all of our customers‘ requirements.

    Milling

    Single and duplex machines offer milling of square and rectangular bars to specified dimensions and agreed tolerances. We can offer our customers milling on either four or six faces for further processing.

    Peeling

    In the case of machined Unibar with diameters of less than 110mm as an alternative to Unibar turned we can offer Unibar peeled by peeling off the oxidised surface layer of the cast bar. As these are smaller dimensions and involve a different machining process, the tolerances offered are more precise, for example h11.

    Boring

    Longitudinal boring as deep as 1000mm is possible by using single head boring and trepanning machines. Unibar tubes can be supplied with the exterior surface as-cast or machined. These two variants can be complemented by a wide selection of internal measurements, which can range from 30mm to 500mm.

    Dimensional Tolerances (SG/Nodular)

    Round
    (As-Cast Diameter mm)
    Ovality Allowances
    mm
    Max. Swell Allowances mm
    20 < (D OR B) ≤ 50 - 5
      50 < (D OR B) ≤ 100 1 7
    100 < (D OR B) ≤ 200 2 10
    200 < (D OR B) ≤ 300 4 12
    300 < (D OR B) ≤ 400 5 15
    > 400 By agreement By agreement

    Machining Allowances (SG/Nodular)

    Section
    (D Diameter, B Width)
    Min. Machining Allowance mm (per side)
    Round Square/Rectangle
    20 < (D OR B) ≤ 50 3 3.5
      50 < (D OR B) ≤ 100 4 4.5
    100 < (D OR B) ≤ 200 5 5.5
    200 < (D OR B) ≤ 300 7 7.5
    300 < (D OR B) ≤ 400 8 8.5
    400 < (D OR B) ≤ 500 10 10.5
    500 < (D OR B) ≤ 650 12 12.5

    For rectangular bars the width is the longer dimension of the cross section. Machining allowances of our continuously cast iron bars can be adjusted to meet customer requirements, subject to discussion, prior agreement and special order. For further information please contact our nearest distribution centre.

    Applications

    Our nodular iron grade Unibar 400-15 is suitable for various applications due to its microstructure and the mechanical properties. It is used for applications within the hydraulic and pneumatic industry, the automotive industry, the machinery and machine tool section, for pumps and compressors, within the oil and gas industry as well as for the steel machinery.

    Unibar 400-15 is often used as a favourable alternative for other materials such as steel, aluminium or sand casting.

    Advantages:

    • Improved machinability
    • Excellent surface finish
    • 10% weight reduction against steel
    • Excellent vibration damping
    • Faster turning and grinding times
    • Finer grain structure than with sand casting
    • Absence of sand inclusions or cast dimensional problems
    • Elimination of costly patterns
    • Availability from stock

    Do you need any further information about our continuously cast iron products? You will find the appropriate data sheets as well as our technical manual in our download section.

    To find out whether Unibar 400-15 is available in your required size, please have a look at our online stock list. Register and keep track of the currently available quantities.