---
product_id: 499983227
title: "BLUEFIRE J9802B 1/4lb Flux Cored Low Temperature Aluminium Brazing Coil All Purpose Welding Coil for Almost All Metals Soldering Propane Torch Universal Welding Rods flux Free"
brand: "bluefire"
price: "¥5246"
currency: JPY
in_stock: true
reviews_count: 5
url: https://www.desertcart.jp/products/499983227-bluefire-j9802b-1-4lb-flux-cored-low-temperature-aluminium-brazing
store_origin: JP
region: Japan
---

# Melts at 752°F for smooth flow Compact coil design for ultimate portability Moistureproof for long-lasting reliability BLUEFIRE J9802B 1/4lb Flux Cored Low Temperature Aluminium Brazing Coil All Purpose Welding Coil for Almost All Metals Soldering Propane Torch Universal Welding Rods flux Free

**Brand:** bluefire
**Price:** ¥5246
**Availability:** ✅ In Stock

## Summary

> 🔥 Weld smarter, not harder — the flux-free coil that fits your hustle!

## Quick Answers

- **What is this?** BLUEFIRE J9802B 1/4lb Flux Cored Low Temperature Aluminium Brazing Coil All Purpose Welding Coil for Almost All Metals Soldering Propane Torch Universal Welding Rods flux Free by bluefire
- **How much does it cost?** ¥5246 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/499983227-bluefire-j9802b-1-4lb-flux-cored-low-temperature-aluminium-brazing)

## Best For

- bluefire enthusiasts

## Why This Product

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

## Key Features

- • **Flux-Free Efficiency:** Skip the extra steps—use directly with propane torch and save on costly flux.
- • **Superior Melt & Flow:** Melts at 752°F with excellent fluidity and capillary action for flawless joints.
- • **Durable & Moistureproof:** Special moisture-resistant treatment ensures long shelf life without performance loss.
- • **Pocket-Sized Portability:** Coil design fits in your pocket—ready for on-the-go fixes anytime, anywhere.
- • **Universal Metal Compatibility:** Bonds aluminum, copper, steel, and stainless steel seamlessly for versatile repairs.

## Overview

The BLUEFIRE J9802B is a flux-cored aluminum brazing coil designed for professional and DIY use, melting at 752°F to deliver smooth, corrosion-resistant joints across multiple metals without the need for additional flux. Its compact coil form factor enhances portability, while moistureproof treatment guarantees durability and consistent performance in any environment.

## Description

No addition flux needed! Use it directly without any extra steps!

Review: Awesome stuff! - Used this to solder a custom joint in my high side AC line. It flowed beautifully and worked just fine. I cleaned it up really good and I didn’t use any flux I didn’t want to contaminate the system and it still flowed fine. Heat up slow. Melt it on the work not with the flame. Sure is nice when a product works like it should and isn’t garbage which is so often the case. Not here. Good stuff.
Review: Best for aluminium - I have tested this brazing coil with a Butane torch. This brazing solder floats, penetrates and bonds really well on aluminium to aluminium joints. It do not float and bond as well on copper and brass. The solder seems to get brittle and the parts is possible to tear apart with force in my small scale testing. When this is done some solder turns to particles/dust. This do not happen when used on aluminium. It seems like it bonds better/easier than high temp aluminum solder sticks I have tested.

## Features

- 【No Flux Needed】No additional flux is needed. BLUEFIRE brazing coil can be used directly with propane torch, which will save you a lot of money on extra flux.In addition, the coil design of brazing rods is more convenient to carry than the rod design, you can use the brazing rods coil in your pocket for repair work anywhere and whenever it's needed. A great and thoughtful design!
- 【Universal Magic Alloy】BLUEFIRE flux cored welding coil is mainly made of zinc aluminum alloy,which can be used for brazing copper and aluminum, aluminum and aluminum, aluminum and stainless steel, aluminum and steel, etc.More specificly,BLUEFIRE flux cored welding coil can be used for brazing transformer,reactor,condenser, evaporator, radiator,motor, battery or other household appliances.You can use it to complete most of the brazing work in life.
- 【Easy to Melt and Flow】BLUEFIRE flux cored brazing rods coil can melt at 752°F and have very good fluidity with good capillary attraction.In addition, BLUEFIRE flux cored welding wire is not only corrosion-resistant, but also is post-braze cleaning unnecessary. It's characteristics of high thermal conductivity and high conductivity make the welding effect full and smooth.It fits both professionals and amateurs.
- 【Moistureproof】BLUEFIRE flux cored welding wire won't absorb water, so it can be stored in various environments for a long time. The special moisture-proof process extends its service life. Even if you can't use it up in a short time, you don't have to worry that it will affect the use effect due to moisture.
- 【Quality Assurance】All BLUEFURE brazing rods are manufactured under highest quality control. It complies with EU RoHS green standard.If you encounter any problems during use, please feel free to contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B5XFR3QP |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #366,690 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #186 in Brazing Rods #9,024 in Welding Equipment & Accessories |
| Brand | BlueFire |
| Color | Gold |
| Customer Reviews | 4.3 4.3 out of 5 stars (28) |
| Date First Available | June 30, 2022 |
| Installation Method | gas-welding |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 4.2 ounces |
| Item model number | J9802B |
| Manufacturer | Bluefire |
| Material | Aluminum |
| Maximum Temperature | 752 Degrees Fahrenheit |
| Measurement System | English/Standard |
| Part Number | J9802B |
| Pattern | Flux cored brazing coiil |
| Product Dimensions | 14 x 0.13 x 0.05 inches |
| UPC | 850007139957 |
| Usage | Commercial/Residential |

## Product Details

- **Brand:** BlueFire
- **Color:** Gold
- **Item Weight:** 0.12 Kilograms
- **Material:** Aluminum
- **Maximum Temperature:** 752 Degrees Fahrenheit

## Images

![BLUEFIRE J9802B 1/4lb Flux Cored Low Temperature Aluminium Brazing Coil All Purpose Welding Coil for Almost All Metals Soldering Propane Torch Universal Welding Rods flux Free - Image 1](https://m.media-amazon.com/images/I/51AWaQKsOUL.jpg)
![BLUEFIRE J9802B 1/4lb Flux Cored Low Temperature Aluminium Brazing Coil All Purpose Welding Coil for Almost All Metals Soldering Propane Torch Universal Welding Rods flux Free - Image 2](https://m.media-amazon.com/images/I/715g9Kk2Z4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome stuff!
*by G***X on June 3, 2025*

Used this to solder a custom joint in my high side AC line. It flowed beautifully and worked just fine. I cleaned it up really good and I didn’t use any flux I didn’t want to contaminate the system and it still flowed fine. Heat up slow. Melt it on the work not with the flame. Sure is nice when a product works like it should and isn’t garbage which is so often the case. Not here. Good stuff.

### ⭐⭐⭐ Best for aluminium
*by F***K on February 21, 2025*

I have tested this brazing coil with a Butane torch. This brazing solder floats, penetrates and bonds really well on aluminium to aluminium joints. It do not float and bond as well on copper and brass. The solder seems to get brittle and the parts is possible to tear apart with force in my small scale testing. When this is done some solder turns to particles/dust. This do not happen when used on aluminium. It seems like it bonds better/easier than high temp aluminum solder sticks I have tested.

### ⭐ Does not work on aluminum or copper
*by J***S on June 18, 2023*

I work for long time with all different type of solder but this solder does not work on aluminum or copper. I I tried aluminum to aluminum, aluminum to copper, copper to cupper and was not able to solder anyone of materials together. When this solder is melting instead of flowing it crumbles up and pulling away from the joints I want to solder together. The manufactured states you don't need solder paste because is already coated with. I can not return it because I used half of the roll without any success. I lost $ 20.23 because of mispresenting the description of this solder. I am not recommending to buy this product.

## Frequently Bought Together

- BLUEFIRE J9802B 1/4lb Flux Cored Low Temperature Aluminium Brazing Coil All Purpose Welding Coil for Almost All Metals Soldering Propane Torch Universal Welding Rods flux Free
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-27*