Red Dog T237X
The T237X overlay alloy for steel plate has been developed for applications requiring an improved abrasion resistance compared with T211X, with an impact resistance between T211X and T223X.
TYPICAL PROPERTIES OF UNDILUTED T237X ALLOY
These properties given directly below refer only to the T237X 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|
|Nominal composition (undiluted)||4.9% C, 4% Mn, 22% Cr, 9% Nb +Ti|
|Microstructure||Hyper-Eutectic with M7C3 primary chromium carbides in an austenitic eutectic matrix, and added Nb-carbides|
|Typical hardness range||50-55 Rc|
|Impact resistance||Moderate to low|
|Typical service temperature||Up to 650°C (1,200°F)|
TYPICAL PROPERTIES OF T237X OVERLAID PLATES
Standard Base plate grades:
|in the USA:||ASTM A-36|
|in the UK||BSEN 10025:1993 Fe 430A (BS 4260-43A)|
Typical chemical compositions and hardnesses of single and double overlays:
AREAS OF INDUSTRIAL USE
T237X overlaid plates are used in many segments of industry: Steelworks, Dredging, Mining, Refineries, Cement, Glass, Timber, Power Generation Plants, Earthmoving, Sugar Mills, etc.
TYPICAL FIELDS OF APPLICATION
Pump shells and pump impellers
Suction and discharge dredge pipes
Shovel bucket wear liners
Chutes and decks of all types and sizes
Chain conveyors wear plates
Feed pipes and lift pipes
Fan blades and housing liners
Coal mill classifier cones
Catalyst fee nozzles
Pulverized fuel systems
Bottom ash screws
Grizzly and breaker bars, etc.