GENERAL DESCRIPTION
The T137X overlay alloy for steel plate has been developed for applications requiring good resistance against wear by abrasion combined with a higher level of impact resistance than that of T200X and T211X overlaid plates.
TYPICAL PROPERTIES OF UNDILUTED T137X ALLOY
The properties given directly below refer only to the T137X alloy, undiluted by base material (substrate). These properties differ from the properties of actual overlay deposits on a particular substrate, examples of which are given in the next section.
| Type of alloy | Iron based |
| Group of alloys | High chromium iron with added NbC |
| Nominal composition (undiluted) | 3.8% C, 3.5% Mn, 22% Cr, 9% Nb, 0.5% V |
| Microstructure | Hypo-Eutectic with uniformly dispersed-fine Nb-carbides |
| Typical hardness range | 47-52 Rc |
| Cracking | Yes |
| Abrasion resistance | Good |
| Impact resistance | Moderate to High |
| Typical service temperature | Up to 650°C (1,200°F) |
| Machining | Only grinding |
| Flame cutting | No |
AREAS OF INDUSTRIAL USE
The T137X overlaid plates are used in many segments of industry: Steelworks, Dredging, Mining, Refineries, Cement, Glass, Timber, Power Generation Plants, Earthmoving, Sugar Mills, etc., where a compromise between slightly reduced abrasion resistance but higher impact resistance than for T200X and/or T211X is required.
TYPICAL FIELDS OF APPLICATION
Shovel bucket wear liners
Chutes and decks of all types and sizes
Vibratory feeders
Crusher liners
Auger flights, etc.
Reclaimer buckets
Ball mill liners
Conveyer transfer points
Dozer blades
Truck bed liners.
MACHINING, CUTTING, WELDING AND REPAIR OF T137X PLATES
Edges and surfaces may be ground with an abrasive disk.
The high chromium content of the alloy is incompatible with the use of oxy-fuel flame cutting processes.
Plasma-arc is the generally prefered method of cutting. The quality of plasma cutting is excellent, in terms both of precesion and cleanliness.
Localized removal of the overlay material is possible using the Carbon-Arc/Air process.
T137X plates can be welded to themselves or to any weldable substrate structural material using mild steel low hydrogen welding consumables.
Structural welding must be carried out on the mild steel side of the plate.
Local repairs, or reconstruction of the overlay at the location of welded joints can be carried out using matching manual electrodes or corresponding tubular wires.
For more information please consult Triten’s Fabrication Guide.
FURTHER SERVICES AVAILABLE FROM TRITEN
Triten’s proprietary technology, technical knowledge and 50 years of experience as a leader in the field, provides the basis from which to select base plate qualities and overlay alloy properties to suit specific, non-standard requirements. This service is available from Triten’s Technical Department, which will be please to assist.
Triten also has the specialised in-house capability of fabricating a wide range of components and structures, notably to ASME Code requirements, from overlaid plates.
TECHNICAL SUPPORT
Technical support and advice on all aspects of the selection and fabrication of Triten overlay plates may be obtained by contacting Kubes Alloys directly.