---
product_id: 402962793
title: "WSW SCN M1 (T0051404999) Lead Free Solder Wire, Dia: 0.3; 0.5; 0.8 mm / 0.012; 0.020; 0.031 in, Wt: 21 g / 0.740 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5%"
brand: "weller"
price: "A$23"
currency: AUD
in_stock: true
reviews_count: 9
category: "Weller"
url: https://www.desertcart.com.au/products/402962793-wsw-scn-m1-t0051404999-lead-free-solder-wire-dia-0
store_origin: AU
region: Australia
---

# 0.3/0.5/0.8 mm Diameters - Versatile Soldering Sizes 3.5% Flux Core - Consistent, Splash-Reduced Flow Sn99.3Cu0.6Ni0.05 Alloy - Precision Metal Blend WSW SCN M1 (T0051404999) Lead Free Solder Wire, Dia: 0.3; 0.5; 0.8 mm / 0.012; 0.020; 0.031 in, Wt: 21 g / 0.740 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5%

**Brand:** weller
**Price:** A$23
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate Your Solder Game — Precision, Safety & Speed in Every Wire!

## Quick Answers

- **What is this?** WSW SCN M1 (T0051404999) Lead Free Solder Wire, Dia: 0.3; 0.5; 0.8 mm / 0.012; 0.020; 0.031 in, Wt: 21 g / 0.740 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5% by weller
- **How much does it cost?** A$23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/402962793-wsw-scn-m1-t0051404999-lead-free-solder-wire-dia-0)

## Best For

- weller enthusiasts

## Why This Product

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

## Key Features

- • **Premium Alloy Performance:** Sn99.3Cu0.6Ni0.05 formula ensures optimal heat transfer and superior flow for flawless results.
- • **Efficiency Meets Precision:** Up to 70% less tip consumption means faster jobs and lower operating costs—maximize your productivity.
- • **Safety & Cleanliness First:** Patented Reduced Splash technology keeps your workspace spotless and your hands protected.
- • **Tailored for Professionals:** Three precise diameters (0.3, 0.5, 0.8 mm) to match every intricate or robust soldering task.
- • **Flawless Joints, Every Time:** Guaranteed 100% continuous flux core for crack-resistant, durable soldering on any surface.

## Overview

The WSW SCN M1 Lead Free Solder Wire offers professional-grade soldering with a patented Sn99.3Cu0.6Ni0.05 alloy and 3.5% flux core. Available in three precise diameters (0.3, 0.5, 0.8 mm), it delivers crack-resistant, durable joints while reducing tip wear by up to 70%. Its Reduced Splash technology enhances user safety and workspace cleanliness, making it the go-to choice for high-efficiency, low-cost soldering in both hand and robotic applications.

## Description

Designed to enhance the quality of all hand and robotic soldering jobs, Weller WSW increases productivity while reducing operating costs. WSW solder wires optimize the performance of the soldering process by reducing tip consumption , ensuring a low total cost of ownership by decreasing labor time and resources. The patented Reduced Splash feature increases direct user safety and clean workbrench. With a guaranteed 100% continuous flux core, combined with pure first metal melting, WSW avoids costly rework and enables long-term, highly durable solder joints without cracking, even on difficult surfaces.

Review: Exactly what I needed - Works very well and easy to use.
Review: Small diameters! - I bought these for hobby/modeling caus it looks like pipes.

## Features

- PERFORMANCE & PRODUCTIVITY - Optimized performance with a guaranteed and consistent 100% continuous flux core.
- QUALITY SOLDER JOINTS - Long-term, highly durable soldering joints that will not crack, even on difficult surfaces.
- LOW TOTAL COST OF OWNERSHIP - Up to 70% less reduced tip consumption and provide a low total cost of ownership by saving labor time & ressources due a higher productivity.
- REDUCED SPLASH - Increase direct user safety as well as workplace cleanliness.
- FLOW + HEAT PERFORMANCE - Patented alloys guarantee optimal results.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09LDDWNWV |
| Batteries Required? | No |
| Best Sellers Rank | #55,056 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #142 in Solder |
| Customer Reviews | 4.6 4.6 out of 5 stars (79) |
| Date First Available | November 9, 2021 |
| Included Components | Weller WSW SCN M1 (T0051404999) Lead Free Solder Wire, Dia: 0.3; 0.5; 0.8 mm / 0.012; 0.020; 0.031 in, Wt: 21 g / 0.740 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5% |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.76 ounces |
| Item model number | T0051404999 |
| Manufacturer | Apex Tool Group |
| Material | lead |
| Part Number | T0051404999 |
| Power Source | Hand Powered |
| Product Dimensions | 1.85 x 1.85 x 1.65 inches |
| Style | .3/.5/.8 mm |
| Usage | Professional |
| Warranty Description | No Warranty - Consumable |

## Images

![WSW SCN M1 (T0051404999) Lead Free Solder Wire, Dia: 0.3; 0.5; 0.8 mm / 0.012; 0.020; 0.031 in, Wt: 21 g / 0.740 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5% - Image 1](https://m.media-amazon.com/images/I/71w3nPSRbTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly what I needed
*by M***C on December 13, 2025*

Works very well and easy to use.

### ⭐⭐⭐⭐⭐ Small diameters!
*by W***M on November 13, 2024*

I bought these for hobby/modeling caus it looks like pipes.

### ⭐⭐⭐⭐ A Good Choice of Lead-Free Solder
*by B***S on August 26, 2022*

Disclosure: This was sent to me for free via the Vine program. I did not receive monetary compensation to write this review, just the product itself. I'll admit, my bugbear is lead-free soldering. There's just something about it that intimidates me. I'm not the greatest at soldering so I tend to crutch on having the free-flowing properties of lead in solder to help do some of the work for me. The last time I tried to lead-free solder/braze...it did not go well. It was in college, I made a mess of my project, and the shop foreman had to do the rest of it by himself just to make sure what I was making wouldn't explode upon heating. So, I'm nervous about it. But when I saw Weller had this sample pack of lead-free solder in varying thicknesses...I knew it was time to try again. So I picked up my Weller WLC100, put in the order for review, and got to work. The item comes in a small box with three spools of varying diameter solder. It tells what it is, the reorder number, the thicknesses, the length, and the composition of the solder. These are Tin 99.3, Copper .6, and Nickel .05 alloys. Yes, that adds up to more than 100%. Don't sweat it. Well..I mean, do sweat it but just don't worry about it. Just know that it's a nearly pure tin solder, suitable for anything that requires no lead in it. It comes in .3mm, .5mm, and .8mm. After running the soldering station for awhile and burning some of the solder of each thickness, I found that the .5mm was the sweet spot, at least for me. It provided a thin enough wire to melt quickly and form a bead without leaving any unsoldered spots on the board (I also used it on some old copper piping as well). With the .3, it heats quickly and flows better but you're gonna burn more to get the same end result. With the .8, it heats slower and takes longer to melt and tends to be more...globule-y, if that makes sense, since it doesn't have the lead's low melting point to help with flow. Looking at the scrap, I can say that this is definitely a good product. You don't get much solder, I'll give it that, but it's $10 for nearly 15 feet of each type of solder. If you want to give non-leaded soldering a go, this is what I'd pick up. It's Weller, so you know the composition will be solid (even if rounding to significant figures on the box isn't their strong suit) and there'll be no impurities. It gives you a wide range of solders to try before you commit to a full spool to see what solder is your sweet spot solder. And...again, it's $10. Pretty cheap for 45 ft of lead-free.

## Frequently Bought Together

- Weller WSW SCN M1 (T0051404999) Lead Free Solder Wire, Dia: 0.3; 0.5; 0.8 mm / 0.012; 0.020; 0.031 in, Wt: 21 g / 0.740 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5%
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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-18*