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Lead-Free Rosin Solder Paste Flux (10g, 30g, 100g)
$1.93$3.87Save 50%
In stock at aliexpress.com
This is lead-free rosin solder paste, a flux sold in 10 g, 30 g and 100 g sizes for electronics soldering and repair. At around $1.93 it is a cheap add-on for soldering iron work, and it shows 94.4% positive feedback on AliExpress across over 32,000 orders. Titles on AliExpress also call it welding paste or soldering oil, so the name is loose.
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Price from AliExpress at our last check (refreshed weekly). The final price, shipping and any import charges show at AliExpress checkout. We may earn a commission if you buy.
Highlights
- Lead-free rosin flux paste, per the title
- Three sizes listed: 10 g, 30 g and 100 g
- Used with a soldering iron to help solder flow
- Under $2 for the smallest size
Best for
Electronics and phone-repair hobbyists who solder small joints.
Things to consider
- The listing does not give the active ingredient or the melting point, so use it for general electronics flux and check the options for the size you want.
- Soldering flux produces fumes when heated, so work with ventilation and clean the residue afterward if it is not labeled no-clean.
- Delivery to the US is usually one to three weeks; if it leaks or arrives wrong, file the dispute through AliExpress Buyer Protection.
Key specs
| Price | $1.93 |
|---|---|
| Sizes | 10 g / 30 g / 100 g |
| Type | Lead-free rosin soldering flux paste |
| AliExpress seller data | 32,000+ orders, 94.4% positive feedback |
Our take
Good low-risk flux for a hobby bench. Skip it if you need a brand-certified formula.
Lead-Free Rosin Solder Paste Flux (10g, 30g, 100g) at a glance
| Brand | AliExpress |
|---|---|
| Price | $1.93 (was $3.87) |
| Type | Welding Equipment & Supplies |
| Availability | In stock at aliexpress.com |
| Returns | Eligible items can be returned within 90 days of payment, with the first return on each… |
Price check
At $1.93, the Lead-Free Rosin Solder Paste Flux is one of AliExpress's more affordable items, whose 52,612 listed products run $1 to $1,229.
It's currently 50% below its listed price of $3.87. Sale prices can end without notice, so check the live price before you order.
Similar items from other brands we track run $24.99 to $79.99.
Frequently asked questions
What is flux paste used for?
It cleans oxidation off metal as you heat it so solder wets the joint properly. It makes hand-soldering of small electronics easier.
Which size should I buy?
For occasional repairs 10 g lasts a long time. Go bigger only if you solder weekly.
Is it the same as branded flux?
It is a generic listing, not a known brand, so expect basic performance rather than a specific brand's formula.
How long does shipping take to the US?
Standard delivery to the US usually lands within one to three weeks. Check the checkout summary for taxes or import fees on top of the item price.
Is the Lead-Free Rosin Solder Paste Flux on sale?
Yes. AliExpress lists it at $1.93, down from $3.87 (50% off). Sale prices change, so confirm the live price on aliexpress.com.
Is there a discount on the Lead-Free Rosin Solder Paste Flux?
AliExpress publishes these ways to save: Coins in the app. AliExpress sets the terms, which can change; our AliExpress coupons page has the details.
What is AliExpress's return policy?
Eligible items can be returned within 90 days of payment, with the first return on each order free, according to AliExpress's 2024 US announcement. Return terms vary by seller and item, so check the product page. Custom, perishable and hygiene items are generally excluded.
How long does AliExpress take to ship?
AliExpress's 2024 US guarantee listed Choice orders at 5 to 12 days and standard orders at 8 to 14 days, but real-world standard shipping from China often runs longer. Items marked Ship from United States come from local stock. Free shipping on Choice orders depends on a minimum order shown at checkout.
Does the Lead-Free Rosin Solder Paste Flux come with a warranty?
AliExpress's published warranty terms: AliExpress does not publish a marketplace-wide product warranty. Coverage depends on the individual seller, and Buyer Protection covers non-delivery, damage and not-as-described claims instead.
Where can I buy the Lead-Free Rosin Solder Paste Flux?
The Lead-Free Rosin Solder Paste Flux is sold directly by AliExpress on aliexpress.com. The Shop now button on this page goes straight to the product there.
Is the Lead-Free Rosin Solder Paste Flux in stock?
Yes. AliExpress lists it as in stock on aliexpress.com as of our latest check. Stock and prices refresh throughout the day.
Is AliExpress a legit store?
AliExpress is a legitimate marketplace that is worth using for cheap, low-risk things like cables, tools, cleaning supplies and small home items, as long as you can wait and you buy from well-rated sellers. Skip it for anything safety-critical, brand-name or urgent. Check the seller's feedback score, the delivery estimate and the import-charge line at checkout before you pay. Our full AliExpress review covers shipping, returns and what to check before ordering.
