| Marca: Alpha |
Alpha® Ceramica Metal is the latest technological advance in wet polishing discs for the stone industry. Built with the hardness of a metal-bond diamond inside a flexible resin-bond body, these discs combine aggressive cutting performance with the flexibility needed to reach internal corners, sink-hole rims, and other tight contours. Designed for harder natural stones such as granite — and equally effective on marble, porcelain, and concrete — Ceramica Metal delivers consistent performance and long life across the 60, 150, and 300 grit stages.
| Part No. | Diameter | Grit | Type | UPC |
|---|---|---|---|---|
| FD30060M | 3" | 60 | Hook & Loop | 749173470424 |
| FD30150M | 3" | 150 | Hook & Loop | 749173470431 |
| FD30300M | 3" | 300 | Hook & Loop | 749173470448 |
| FD40060M | 4" | 60 | Hook & Loop | 749173470455 |
| FD40150M | 4" | 150 | Hook & Loop | 749173470462 |
| FD40300M | 4" | 300 | Hook & Loop | 749173470479 |
| Part No. | FD30060M |
| UPC | 749173470424 |
| Size | 3" |
| Type | Hook & Loop |
| Color | Blue (grit ID) |
| Max RPM | 4,000 RPM |
| Recommended For | 60 grit — wet polishing of granite, marble, porcelain, and concrete |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.5in x 3.5in x 0.5in |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
| Part No. | FD30150M |
| UPC | 749173470431 |
| Size | 3" |
| Type | Hook & Loop |
| Color | Yellow (grit ID) |
| Max RPM | 4,000 RPM |
| Recommended For | 150 grit — wet polishing of granite, marble, porcelain, and concrete |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.5in x 3.5in x 0.5in |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
| Part No. | FD30300M |
| UPC | 749173470448 |
| Size | 3" |
| Type | Hook & Loop |
| Color | Orange (grit ID) |
| Max RPM | 4,000 RPM |
| Recommended For | 300 grit — wet polishing of granite, marble, porcelain, and concrete |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.5in x 3.5in x 0.5in |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
| Part No. | FD40060M |
| UPC | 749173470455 |
| Size | 4" |
| Type | Hook & Loop |
| Color | Blue (grit ID) |
| Max RPM | 4,000 RPM |
| Recommended For | 60 grit — wet polishing of granite, marble, porcelain, and concrete |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 4.25in x 4.25in x 0.25in |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
| Part No. | FD40150M |
| UPC | 749173470462 |
| Size | 4" |
| Type | Hook & Loop |
| Color | Yellow (grit ID) |
| Max RPM | 4,000 RPM |
| Recommended For | 150 grit — wet polishing of granite, marble, porcelain, and concrete |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 4.25in x 4.25in x 0.25in |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
| Part No. | FD40300M |
| UPC | 749173470479 |
| Size | 4" |
| Type | Hook & Loop |
| Color | Orange (grit ID) |
| Max RPM | 4,000 RPM |
| Recommended For | 300 grit — wet polishing of granite, marble, porcelain, and concrete |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 4.25in x 4.25in x 0.25in |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
| Property | Detail |
|---|---|
| Bond Type | Flexible resin with metal-bond diamond hardness |
| Application | Wet polishing of granite, marble, porcelain, and concrete |
| Diameters Available | 3" (76 mm) and 4" (102 mm) |
| Grits Available | 60, 150, 300 |
| Attachment | Hook & Loop |
| Maximum Operating Speed | 4,000 RPM |
| Grit Color ID | Blue = 60 / Yellow = 150 / Orange = 300 |
| Wet/Dry | Wet only — requires central water-feed polisher |
| Country of Origin | Japan |
Alpha® Ceramica Metal is designed for all natural stones such as granite, marble, porcelain and concrete.
Alpha® Ceramica Metal discs are available in 3" and 4".
Alpha® provides colored hook & loop material to help identify the grit of the disc. Ceramica Metal: Blue = 60 grit, Yellow = 150 grit, Orange = 300 grit.
Ceramica Metal should not exceed 4,000 RPM.
Alpha® recommends central water-feed polishers such as the Alpha® AIR-680 and VSP-320.
Vitrified discs are the most aggressive of the Ceramica family and are best on convex surfaces such as bullnose edges. Ceramica Metal combines the flexibility of resin with the long life of metal bond and is suitable for concave and convex shapes such as ogee edges and internal corners.
Resin is the most common bond on the market today; Ceramica Metal lasts up to 6 times longer than a resin disc and outperforms resin in all aspects of light grinding and polishing.
No. Ceramica Metal discs are designed for wet applications only and perform best on wet polishers with central water-feed systems.
Yes. Ceramica Metal can be used on concrete countertops and for breaking the surface of cured concrete; due to concrete’s aggressive nature, disc life may be shorter.
Use a Flexible backer pad for contoured surfaces and a Rigid backer pad for flat edges or surfaces.
Yes — you may mix bond types as long as you follow the grit sequence. Example: Ceramica Vitrified 60 → Ceramica Metal 150, or Ceramica Vitrified 150 → Ceramica Metal 300.
AIR-658 w/ Ceramica Metal
⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.
