OVERLAY

T170

T170 is at the top of Trimay’s® product list. T170 is a nickel-based steel overlay wear solution with a unique proprietary alloy composition designed to withstand heavy impact and severe wear environments.

T170 is unrivalled in wear resistance and impact resistance due to the high nickel chemistry.

Application Process

Sub Arc Bulk Welding

Substrate Materials

44W (or 300W) steel
Stainless steel
516 Grade 70 forpressure applications

Overlay Thickness

Standard (single pass): 5/16" or 8 mm

Rockwell C (HRc) Hardness

HRc 46 – 50

Wear Resistance

ASTASTM G65-04 Procedure A 6,000 cycles mass
loss 0.05g (+/- 0.03)

Overlay Attributes

T170 consistently rates between 46 – 50 HRc for hardness, and only loses 0.05 g (+/-0.03) on ASTM G65-04 Procedure A mass loss test.

T170’s Nickel Chrome Iron Matrix (NCIM), with Macrocrystalline Tungsten Carbide (MTC) and other elements added, forms this nickel-based alloy. Furthermore, because MTC carbides do not degrade throughout the overlay application process, the finished overlay keeps ductility and is able to absorb impact rather than fracture.

Common Application

T170 is used in intense wear environments, most commonly in areas exposed to frequent direct impact and intense wear. It is always economical.

Production and Installation

As a wear plate solution, T170 can be applied on most types of steel. T170 wear plate is applied using Trimay’s® proprietary Submerged Arc Bulk Overlay Welding Process and can be cut and fabricated to specification. It can be rolled or formed by press brake and cut via plasma arc or water jet. It cannot be flame cut. Formability is dependent only on thickness and whether weld position is on the inner or outer diameter.

For applications requiring less precision, T170 over- lay material can be removed by means of carbon arc gouging. These overlays are non-machinable and, if necessary, surface finishing can be done by grinding or E. D. M. T170 wear plate can be installed by plug or fillet welding, bolted or fabricated with inserts for installation. Any weld seams should be overlaid with Trimay’s® TWP61w wire to ensure even wear on the plate and weld seam.