SLS 600^® Induction Wear Pipe

Clifton Steel’s SLS600^® induction hardened wear pipe is engineered for maximum life in highly abrasive applications, with a special chemistry and core hardened pipe.

Induction hardened pipe is achieved by a unique heating/quenching process. This process alters the microstructure of the steel through the pipe wall, resulting in an inner surface hardness of 600 BHN. While the inner surface provides exceptional abrasion resistance, the outer surface cools slower, remaining more ductile, with a hardness of 250 BHN. The unique process allows the pipe to accommodate service and welding stresses.

This wear pipe is a highly economical solution to many of the abrasive wear problems found with carbon steel pipe. It is also a much more user and maintenance friendly option to replace the heavy, brittle cast piping often used to combat abrasion.

Advantages

Outlasts mild steel pipe by average of 5+ times
Reduces maintenance cost, & unplanned outages
Wide range of diameters
Standard pipe sizes
Easy installation & field repair
Monolithic material with no laminations
Available in straights, bends, wyes, tees & reducers
Abrasion resistant up to 450° F
Tremendous design & fabrication flexibility
Great replacement for heavy, unweldable castwear pipe

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Comparison Based on Mild Steel

	Mild Steel	Induction Hardened Pipe
Hardness	120 – 150 BHN	600 BHN
Max Temperature	750° F	450° F
Abrasion Resistant	Poor	Good
Impact Resistant	Good	Fair
Std. Sizes (OD)	Unlimited	2.5″ to 24″
Handling/ Installation	Excellent	Very Good
Fabrication	Unlimited	Some Limitations
Emergency Repair	Easily Patched	Easily Patched
Initial Cost	1	3-4x
Life Expectancy	1	4-6x
Min. Bend Radius		20″ min. or 3x Diameter

Hardness Profile

The outside surface is mild steel for easy welding.

Fabrication

We recommend the use of Clifton Steel’s fabrication services to eliminate processing and fabrication errors.

Cutting and forming

Induction wear pipe can be successfully cut with plasma cutting or an abrasive cut-off wheel. We do not recommend using Oxy-fuel. The pipe should never be cut lengthwise as the induction hardening process imparts internal stresses in the pipe wall.

Joint Preparation

Avoid welding areas of pipe that have tears, crack, or other imperfections. Area to be joined should have all loose scale, moisture, rust, grease, etc. removed within 1/2″ from welding joint.

Welding

As any heat applied to induction hardened pipe can affect the wear properties, consult with a Clifton Steel representative prior to welding. We do stock weld wire compatible with hardened pipe- Tensaweld Workmate.

Preheating & Interpass Temperatures

Preheat the weld zone and 6″ of the adjacent if ambient temperature of parts is below 70º F. Care must be taken to cool the inner surface. As temperatures approach 500º F the inner surface hardness will begin to decrease.

Welding with water cooling is the preferred method of welding. Be sure the water does not contact the exterior of the pipe. An alternate method without water cooling should only be used when water is not available.