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Mangabraze
mang01.jpgMangabraze is a proprietary grade of wear-resistant alloy plate, field-proven for over 50 years in providing the longest life in heavy industrial wear applications. Unlike common abrasion-resistant plate, which focuses on hardness alone, the unique, rich chemistry of Mangabraze develops work-hardening toughness as well, to resist fracture, the most common cause of wear failure.

The Mangabraze Difference

Mangabraze and E-Z Braze are engineered alloys, not generic AR plates with fancy names. The high levels of Nickel (1 1/2%) and Manganese (2%) allow special mill processing which increases depth of hardness.
Mangabraze is made in controlled electric furnaces to minimize impurities, which detract from a material's toughness. The molten metal is vacuum-degassed to draw off impurities (e.g. sulfides). Any microscopic impurities that remain are then refined to neutralize their effects upon the steel. This process is known as "inclusion shape control," and is the same type of process used in refining impurities in the most critical applications (e.g. airplane landing gear). This process also increases the ability of the plate to resists weld cracks.
High levels of Manganese are added to allow the formation of extremely hard alloy carbides which resist wear similar to the way carbide tool bits resist wear.
High levels of Nickel are added to promote deeper, more uniform hardening. Not having such high levels of Nickel, commercial AR plate products are only able to develop irregular surface levels of hardness. Note that in recent mill evaluations heavy sections of Mangabraze actually displayed increased hardness toward the mid-area of thickness.
Manganese and Nickel together, present in the levels established for Mangabraze, allow the employment of a very high-temperature tempering process, which follows heat treatment. This process removes mill rolling stresses and has the unique ability to add toughness to the steel. In steels that do not have the rich chemistry of Mangabraze, a lower temperature tempering process must be used to remove the thermal stress caused by heat treatment. Lower temperature in this process results in decreased toughness in the steel.
In severe service this combination of Manganese and Nickel also promotes additional "cold-working" hardness of up to 17% of the as-delivered hardness. This additional hardening allows the plate to "self-polish," providing the added benefit of minimizing drag when moving bulk materials.
There are many AR plate products that are economically produced to what is commonly referred to as the "Chrome-Manganese-Boron" formula. This formula does not produce a steel in the class of Mangabraze. Close inspection of their composition reveals that they are all very similar. The hardening ability of moderate amounts of Boron to achieve an erratic, not uniform, low-depth hardness that lacks toughness and is unpredictable in service.

Typical Mechanical Properties

Hardness
360-425 BHN
Tensile 210,000 psi
Yield 190,000 psi
% of elongation 0.18
Reduction in area 0.45

*also available in 280-325 BHN E-Z Braze for ease of fabrication.

Typical Charpy V-Notch Impact (ft/lbs) Longitudinal Transverse
At 72°F 30-47 16-32
At -50°F 16-20
41548
 

Typical Mangabraze Applications

mang02.jpg

Liners can be provided fabricated and completely machined, as needed.

  • Back Up Plates
  • Bucket Lips & Liners
  • Bulldozer Blades
  • Chute Liners for coal, wood chips, ore, gravel, cement, etc.
  • Concrete Mixer Liners
  • Scrap Baler Liners
  • Scraper Blades
  • Scrap Box Liners
  • Skip Car Liners
  • Steel Mill (machined, chock, roll and  housing)
  • Truck Box Liners
  • Wear Bars, Plates & Strips
  • Stock Size Range

    Thick. 4x4 ft 4x8 ft 4x12 ft 4x24 ft 6x8 ft 6x12 ft 6x24 ft 8x12 ft 8x24 ft
    3/16 ü ü ü ü ü ü ü ü ü
    1/4 ü ü ü ü ü ü ü ü ü
    3/8 ü ü ü ü ü ü ü ü ü
    1/2 ü ü ü ü ü ü ü ü ü
    5/8 ü ü ü ü ü ü ü ü ü
    3/4 ü ü ü ü ü ü ü ü ü
    7/8 ü ü ü ü ü ü ü ü ü
    1 ü ü ü ü ü ü ü ü ü
    1 1/8 ü ü ü ü ü ü ü ü ü
    1 1/4 ü ü ü ü ü ü ü ü ü
    1 1/2 ü ü ü ü ü ü ü ü ü
    1 3/4 ü ü ü ü ü ü ü ü ü
    2 ü ü ü ü ü ü ü ü ü
    2 1/2 ü ü ü ü ü ü ü ü ü
    4 ü ü ü ü

     

    Machining and Technical Data

    mang03.jpg

    Machining
    High Speed Tooling – reduce feed and speed to minimize work hardening
    Welding
    Low Hydrogen – E7018, 8018 – request detailed welding data
    Flame Cutting
    Standard Torch – oxyacetylene – minimize heat

    Mangabraze Heat Treatment

    Hardening
    1575°F - 1600°F
    Quench Media
    water, oil
    Tempering
    850°F
    Annealing
    1425°F - 1575°F
    Stress Relieving
    800°F - 900°F
    Normalizing
    1500°F - 1600°F

     

     

    Mangabraze Chemistry

    C
    MN
    P
    S
    Si
    Ni
    Mo
    V
    B
    AL
    .24
    2.0
    .015
    .015 max*
    .30
    1.50
    .20
    .010
    .003 max
    .020

    *typical sulfur content is .006
    This is the English text. If you see this the code works, hurray!