---
product_id: 230523916
title: "BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5\" x 7/8\" - 5 Pack (60 Grit)"
brand: "bha"
price: "7749 kr"
currency: ISK
in_stock: true
reviews_count: 2
url: https://www.desertcart.is/products/230523916-bha-calcium-coated-flap-discs-for-aluminum-type-27-4
store_origin: IS
region: Iceland
---

# <0.1% contaminants prevents after-rust Type 27 flat grinding surface Calcium coating resists gumming BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit)

**Brand:** bha
**Price:** 7749 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Grind smarter, not harder — flawless finish every time!

## Quick Answers

- **What is this?** BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit) by bha
- **How much does it cost?** 7749 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/230523916-bha-calcium-coated-flap-discs-for-aluminum-type-27-4)

## Best For

- bha enthusiasts

## Why This Product

- Trusted bha brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rust-Free Finish:** Ultra-low iron, sulfur, and chlorine content ensures no after-rust on your metals
- • **Extended Disc Life:** Calcium coating minimizes chip adhesion for longer-lasting performance
- • **Precision Grinding:** Type 27 flat surface delivers smooth, consistent results on soft metals
- • **Professional Grade Pack:** 5-pack bundle designed for continuous, high-efficiency workflow
- • **Versatile Metal Compatibility:** Optimized for aluminum, copper, nickel, zinc, and other non-ferrous metals

## Overview

BHA Calcium Coated Flap Discs are engineered with a load-resistant calcium coating that prevents gumming and chip adhesion, significantly extending disc life. Featuring a Type 27 flat grinding surface, these 4.5" x 7/8" discs are optimized for soft non-ferrous metals like aluminum and copper. With less than 0.1% iron, sulfur, and chlorine, they eliminate after-rust, ensuring a clean, professional finish. Available in a convenient 5-pack for sustained productivity.

## Description

The Black Hawk Abrasives 4.5” x 7/8” T27 Flap Disc for Aluminum is a breakthrough in soft metal grinding technology. With premium ceramic grains, calcium stearate coating, and sturdy polyester flaps this 4 ½ inch sanding disc will stay cool, prevent loading, and last very long. The secret to this disc’s effectiveness and longevity is in the white stearate coating. As the disc is used the stearate becomes liquefied, creating a protective barrier on the work piece, both lowering the work piece’s temperature and preventing clogging (A.K.A. “chip adhesion”) on the disc itself. Under the same conditions a standard zirconia or aluminum oxide flap disc may distort or warp the work piece while gumming up, drastically reducing the useful life of the flap disc. For these reasons the BHA’s Aluminum 4.5 inch flap disc is the ideal choice for all soft non-ferrous metal sanding applications including copper, nickel, zinc and of course Aluminum! To maximize your effectiveness, reduce disc change down time, and protect your material look not further, this is your flapper disc.

## Features

- Load Resistant Calcium Coating
- Resists gumming up or chip adhesion - extends life of disc and protects work piece
- Contaminant Free: Less than 0.1% Iron, Sulfur and Chlorine - will NOT cause after-rust
- Type 27 - Flat Grinding Surface
- Works Well on: Aluminum, Copper, Nickel, Zinc, as well as other "Soft" Non-Ferrous Metals

## Product Details

- **Grit Material:** Ceramic
- **Product Dimensions:** 4.5"L x 4.5"W
- **Brand:** BHA
- **Compatible Devices:** Angle Grinder
- **Grit Type:** Medium

## Images

![BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit) - Image 1](https://m.media-amazon.com/images/I/61mOCJF5bcL.jpg)
![BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit) - Image 2](https://m.media-amazon.com/images/I/61A0ib7ziyL.jpg)
![BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit) - Image 3](https://m.media-amazon.com/images/I/61ccz3nOjeL.jpg)
![BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit) - Image 4](https://m.media-amazon.com/images/I/71Uq7t6tuOL.jpg)
![BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit) - Image 5](https://m.media-amazon.com/images/I/61Tu5TvsmBL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ These things carve away material really fast on 6063 aluminum
*by R***W on February 7, 2024*

These might be a little bit too aggressive for me because they really burn aluminum material away quickly. You have to use a really light touch when you are shaping pipe notches but they do a great job of burning away excessive welds on aluminum. I'm a terrible welder and is a spool gun so these are working well to grind away all of my overweld material.

### ⭐⭐⭐⭐⭐ Works great on aluminum
*by J***. on January 27, 2024*

I’ve been looking for a product like this specifically made for aluminum. I used some last night and they work very well, don’t plug up and last a long time. I also like the cupped shape, as this allows you to hold the grinder at a flatter angle and not hit the arbor I. The surface you are grinding. I will buy these again.

## Frequently Bought Together

- BHA Calcium Coated Flap Discs for Aluminum Type 27, 4.5" x 7/8" - 5 Pack (60 Grit)
- BHA 4.5" Inch Angle Grinders, Depressed Center Load Resistant Grinding Wheels for Aluminum & Other Soft Metals, 4-1/2" x 1/4" x 7/8" - 5 Pack
- BHA Load Resistant Cut Off Wheels for Aluminum & Other Soft Metals, Angle Grinder Cutting Discs 4-1/2" x .045 x 7/8" - 25 Pack

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-03*