ENDURA Cr is developed for severe wear and impact applications applying specially formulated abrasive materials on AR 450 backing plate. The overlay material is composed of primary chromium-rich carbides and refined multiple-alloy complex carbides dispersed evenly in a ductile eutectic austenite matrix. The additional multi-alloy carbides are harder and finer than the co-existing chromium-rich carbides which interlock between large primary chromium-rich carbides in a matrix.
- 700 BHN (65 HRC)
- 450 AR backing plate for added wear life
- Elevated temperatures (660 F)
- AR 450 backing withstands plastic deformation better due to its high yield strength flexing back after impact
- Provides stronger support due to high hardness and better bonding properties between overlay and base steel
- Good performance for impact situations at elevated temperatures up to 350° C (660° F), best impact resistance is at room temperature.
The microstructure of ENDURA Cr contains primary chromium-rich carbides and refined multiple-alloy complex carbides with a typical hardness of 2500 to 3000 HK4) dispersed evenly in a ductile eutectic austenite matrix. The typical volume fraction of primary chromium-rich carbides is maintained between 30 to 40% with 7 to 10% of multi-alloy complex carbides.
ENDURA Cr is widely used in many industries including mining, cement and power generation. Some specific applications include:
|Metric Unit||Imperial Unit|
|6 mm on 6 mm||1/4″ on 1/4″|
|10 mm on 10 mm||3/8″ on 3/8″|
|6 mm on 20 mm||1/4″ on 3/4″|
|6 mm on 25 mm||1/4″ on 1″|
|6 mm on 32 mm||1/4″ on 1-1/4″|
|Metric Unit||Imperial Unit|
|1.2 m x 2.4 m||4′ x 8′|
|1.5 m x 3.0 m||5′ x 10′|
|1.8 m x 3.0 m||6′ x 10′|
Installing ENDURA Cr
No special equipment is needed to install ENDURA Cr products. Welding and bolting are the common methods for installing ENDURA Cr
overlay plate or wear parts onto your equipment.
When joining base metal use 480 MPa (70 ksi) or 560 MPa (80 ksi) consumables. Any surface exposed to severe wear should be protected with hard-surfacing consumables.
Welding and Bolting to Your Substrate
ENDURA Cr can be cut by plasma, laser, water jet, arc gouge, and abrasive saw cutting. It cannot be cut by oxy-fuel flame cutting. ENDURA Cr should be cut from the base metal side only to avoid carbon contamination.
When beveling, ENDURA Cr overlay plate can be burned from the hard side. Cutting speeds need to be reduced when cutting carbides.
ENDURA Cr is typically formed with overlay to the inside but can be roll formed with overlay to the outside. Avoid bending plate parallel to the welding bead direction.
The staggered cracking pattern on the overlay surface ensures good formability when bending. For bending radius recommendations, see chart below.
Machining ENDURA Cr with onventional methods is not recommended. It can be finished by grinding.
Countersunk holes can be precisely produced by EDM (Electrical Discharge Machining). Pre-machined mild steel inserts can be used if extra machining is required.
Recommended Cutting Speed at Different Plasma Currents and Thickness
|Plate thickness||Carbon steel|
|130 amps||200 amps||260 amps||400 amps||360 amps|
|6 mm on 3 mm|
1/8″ on 1/4″
|6 mm on 6 mm|
1/4″ on 1/4″
|10 mm on 10 mm|
3/8″ on 3/8″
|12 mm on 12 mm|
1/2″ on 1/2″