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COLMONOY technical data sheet Wall Colmonoy Corporation, 101 West Girard, Madison Hts., MI 48071-1880 Tel: 248-585-6400 • Fax: 248-585-7960 • www.wallcolmonoy.com Nominal Composition (Percent by weight) Carbon 0.5 Chromium 13.0 Iron 3.7 Boron 2.4 Silicon 3.5 Nickel Rem. Physical Properties Specific Heat: 0.11 Btu/lb/°F (70-212°F) Specific Gravity: 8.1 Density: 0.294 lb/in3

Melting Point: Solidus: 1750°F (954° C) Liquidus: 1950°F (1065ºC) Modulus of Elasticity: 32 x 106 psi (tension & compression) Ultimate Compressive Strength: 275 ksi (average) Tensile Strength: 60 ksi (average) Magnetic Permeability: 1.005 Coefficient of Friction: 0.1 (6 micro-inch) Coefficient of Thermal Expansion: 8.4 x 106 per F°

Hot Hardness Rockwell C Scale 75°F 600°F 800°F 1000°F 1200°F

45-50 46 45 41 38

Photomicrograph of fused coating, original at 100x

Description

Colmonoy 5-S is a premium nickel-base alloy powder which is crushed from a fully alloyed shot. The proprietary two-stage process produces and promotes formation of hard phases in the coating or overlay deposit that contain:

Microstructural Constituent

Microhardness (DPH)

Chromium Boride 4100 Chromium Carbide 2500 Primary Solid Solution 450 Secondary Solid Solution

800

Eutectic Composition 1000 The alloy is used for hard surfacing parts to resist wear, heat, corrosion and galling. It has greater ductility and better impact resistance and work- ability than Colmonoy 6, and displays excellent finishing characteristics.

Ni 1.3.1 COLMONOY® 5-S

A Nickel-Base Hard-Surfacing Alloy Containing Chromium, Boron, and Silicon

Hardness RC 45-50

Application Method Colmonoy 5-S is only recommended for use with the Sprayweld® System

Sprayweld Process Steps

1. Under cut the area to be coated. 2. Surface preparation by grit blasting. 3. Coating application with allowance for shrinkage

and finishing (i.e. 20% for shrinkage on fusing and 0.010” for finishing).

4. Fusing the coating by heating to a temperature within the liquidus/solidus range, generally with an oxy-fuel torch or atmosphere furnace, densifies the coating into a solid metallurgically bonded overlay.

Finishing The Overlay Machining is readily done with tungsten-carbide-tipped tools. Cubic boron nitride tools work even better. The tools should have slight lead and rake angles, and a radius of 1/32”. Turning speed: 15 to 45 SFPM In feed: 0.015” (roughing) Cross feed: 0.003 inch per revolution or less Grinding should be done wet, whenever possible. Wet grinding will reduce the chance for surface checking due to high grinding pressures required. Silicon-carbide wheels are recommended. Refer to the Tech-2 data sheet for more information on finishing. Careful consideration should be undertaken when selecting a coating system that will be used on alloy base metals with high hardenability or have a large difference in thermal expansion, as compared to the coating alloy. These base metals can be sprayed and fused, but must be isothermally annealed immediately after fusing to prevent cracking of the overlay. Medium carbon and alloy steels may also require special preheat and post-heat treatment. See technical data sheets SW-2 and SW-3 for details.

Typical Uses

Hard surfacing of components in the petroleum industry, such as sucker rod couplings, centrifugal pump parts, heat exchanger tubes, wear rings, etc. Also used on camshaft lobes, glass plungers, cement industry gate and globe valve components, dragline rollers and metalworking dies used for forming and drawing. Safety When handling thermal-spray powders, avoid inhalation or contact with the skin or eyes. Conduct spraying operation in a properly ventilated area. For more information, consult 11.8 (Ventilation), AWS Thermal Spraying: Practice, Theory, and Application available from American Welding Society, 550 N. W. LeJeune Rd, Miami, FL 33126, OSHA Safety and Health Standards available from U. S. government Printing Office, Superintendent of Documents, P. O. Box 371054, Pittsburgh, PA 15250, and the manufacturer’s Material Safety Data Sheet (MSDS). Read and understand the manufacturer’s material safety data sheet before use. Storage Requirements Keep thermal spray powders dry and in a closed container. The containers should be tumbled before using the powder. If moisture is adsorbed from the atmosphere, flowability can be restored by drying the powder, with the seal removed and lid loosened, at 150-200°F for two hours prior to use. The information provided herein is given as a guideline to follow. It is the responsibility of the end user to establish the process information most suitable for their specific application(s). WCC assumes no responsibility for failure due to misuse or improper application of this product, or for any incidental damages arising out of the use of this material.

Copyright Wall Colmonoy 2008 0108C