OVERLAY

T161

T161 is an iron-based steel overlay wear solution with a unique alloy composition designed to resist heavy wear under extreme temperature.

This is Trimay’s® complex carbide overlay that deters corrosion and protects against abrasion even in extreme heat.

Overlay Attributes

T161 consistently rates between 60-62 HRc for hardness, and only loses 0.11 g (+/-0.03) on ASTM G65-04 Procedure A mass loss test. The mixture of Chromium Iron, Niobium and Vanadium, plus Trimay’s® Sub Arc Welding process, forms a tight crystalline structure, giving T161 the ability to resist corrosion and heavy wear between temperatures of 450°C & 650°C.

Common Application

T161 is primarily used in high temperature corrosive wear environments. A variation of the T161, the T161i, has added nickel to improve impact resistance in high impact environments.

Production and Installation

As a wear plate solution, T161 can be applied on most types of steel. T161 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 dependant only on thickness and whether weld position is on the inner or outer diameter.

For applications requiring less precision, T161 overlay 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. T161 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.

Application Process

Sub Arc Bulk Welding

Wear Resistance

ASTM G65-04 Procedure A
6,000 cycles mass loss

Substrate Materials

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

Rockwell C (HRc) Hardness

HRc 60 – 62

Overlay Thickness

Standard (single pass):
5/16” or 8 mm
Maximum: 9/16” or 14 mm