• Soldering flux 25ML bottle for stainless steel and metal welding, non-toxic and practical solder paste.
  • 25ML stainless steel soldering flux paste, non-toxic liquid for quick welding of metals.
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Powerful Soldering Flux for Stainless Steel, Nickel & Batteries (25ml)

Powerful Soldering Flux for Stainless Steel, Nickel & Batteries (25ml)

🔥 57 sold•✓ In stock
HK$10.00
HK$10.00
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Delivery Options

  • Local delivery within Hong Kong and in-store pickup.​
  • Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.​
  • Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).​
  • Estimated delivery time: 1–3 business days after dispatch (Hong Kong).​
  • In-store pickup details (location and time) will be confirmed by email or phone message.​
  • Delivery times are estimates and may be affected by weather or unforeseen circumstances.​

The Ultimate Solution for Soldering on Any Metal Surface

The industrial-strength liquid flux that makes the impossible possible. Designed for professionals and hobbyists alike, this powerful formula allows you to easily solder on surfaces that traditional rosin flux can't handle. With just a light wipe, you can create strong, clean, and bright solder joints on stainless steel, nickel strips, copper, iron, and more.

It's so effective, it can even replace the need for a spot welder when making custom battery packs! This is the ultimate helper for your most demanding soldering tasks.

Key Features:

  • Industrial Strength Formula: Effortlessly handles difficult metals like stainless steel, galvanized plate, and nickel, where ordinary rosin flux fails.
  • Replaces Spot Welders: Powerful enough to facilitate strong solder bonds on nickel strips for mobile phone and other battery-making projects, saving you the cost of a spot welder.
  • Fast, Flawless Tinning: The advanced formula rapidly removes metal oxides and promotes uniform solder flow, creating a dense, protective alloy layer.
  • Bright & Strong Joints: Delivers excellent performance for full, firm, and brilliantly shiny solder joints that are both durable and highly conductive.
  • Low-Toxicity & Eco-Friendly: A lead-free, nearly colorless transparent liquid. Processed to reduce toxicity, making it safer for operators with long-term use.

Extensive Applications: This versatile flux is widely used for high-quality soldering across numerous industries:

  • Electronics: Mobile phone batteries (soldering nickel strips), plugs, e-cigarettes, and various PCB boards.
  • Automotive & Repair: Automotive radiators, metal water tanks (fabrication and repair), and water pipe joints.
  • Commercial & Industrial: Stainless steel advertising signs, lamp manufacturing, and stainless steel utensils/bottles.
  • Precision & Hobby: Medical devices, beauty needles, watches, fishing gear, and other precision components.

How to Use:

  1. Clean the metal surface you intend to solder.
  2. Apply a small amount of Han Wuyou flux with a brush or swab.
  3. Apply your tin-based solder with a soldering iron to create the joint.
  4. CRITICAL STEP: Immediately after soldering, clean the area thoroughly with water or a damp cloth to remove all residual flux. This prevents future corrosion.

Product Composition:

  • ZnO: 24%
  • NH4Cl: 30%
  • HCl: 6%
  • C3H3COH: 30%
  • H2O: 12%
  • Surfactant: 3%
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