15W454 - Walter ALLSTEEL 4-1/2" x 7/8" 40 Grit Type 27 Flap Disc

High-Performance Zirconia Alumina Flap Disc for Steel

The Walter Surface Technologies ALLSTEEL™ Flap Disc (SKU: 15W454) represents a significant advancement in abrasive technology for industrial metalworking. Designed specifically for use on steel, this 4-1/2 inch disc utilizes a proprietary blend of zirconia alumina grains. This high-performance abrasive material is engineered to self-sharpen during use. As the grains fracture under pressure, they expose new, sharp cutting edges rather than dulling out, ensuring a consistent cut rate throughout the life of the disc. This mechanism allows operators to remove material efficiently without applying excessive pressure, reducing fatigue during extended grinding sessions.

One of the standout features of the ALLSTEEL™ line is the innovative Eco-Trim™ backing. Unlike traditional fiberglass backings that cannot be altered, the Eco-Trim™ backing is made from a specialized material that can be trimmed down. As the abrasive flaps wear down to the edge of the backing plate, the operator can simply trim the backing to expose the unused abrasive material closer to the center of the disc. This unique feature can extend the usable life of the disc by up to three times, providing substantial cost savings and reducing waste in high-volume production environments.

The Type 27 profile of this disc provides a flat grinding surface, making it the optimal choice for blending sharp corners, heavy deburring, and smoothing out fillet welds. The 40 grit specification indicates a coarse abrasive texture, perfect for rapid stock removal and initial weld leveling. With a standard 7/8" arbor, it fits most industrial 4-1/2" angle grinders. Manufactured in Germany to strict quality standards, the Walter ALLSTEEL™ flap disc offers a balance of safety, comfort, and economic efficiency for professional fabricators.

Key Technical Benefits

• Extended Lifespan: Trimmable backing utilizes more of the abrasive flaps.
• Consistent Performance: Self-sharpening grains maintain cutting speed.
• Operator Comfort: Smooth running with less vibration and pressure required.