Solder Wire

High-Purity, Reliable & Engineered for Strong Bonds

At National Products (NP Solders), we manufacture high-performance solder wire engineered for flawless electrical conductivity, strong mechanical bonding, and long-term reliability.

Designed for PCB assembly, electronic repairs, industrial soldering, and automated production lines, our solder wire ensures clean joints with minimal defects and superior wetting performance.

Solder Wire of various Grades
Element 60/37.5/2.5 Sn/Pb/Ag 63/37 60/40 50/50 40/60 20/80 15/85 10/90
Sb** 0.12-0.2 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5
Pb Rest Rest Rest Rest Rest Rest Rest Rest
Cu 0.12-0.2 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5 0.12-0.5
Sn 59.5-60.5 62.5-63.5 59.5-60.5 49.5-50.5 39.5-40.5 19.5-20.5 14.5-15.5 9.5-10.5
Ag 2.5±0.2 0.002 0.002 0.002 0.002 0.002 0.002 0.002
Fe 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02
As 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03
Bi 0.07 0.03 0.03 0.03 0.03 0.03 0.03 0.03
Al 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001
Cd 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001
Zn 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002
P 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003
Solidus temp. 179°C 183°C 183°C 183°C 183°C 183°C 225°C 275°C
Liquidus temp 183°C 191°C 216°C 183°C 277°C 290°C 302°C

Why Choose NP Solder Wire?

✔ High-purity raw materials
✔ Excellent wetting & flow characteristics
✔ Low spattering & smooth melting
✔ Uniform alloy composition
✔ Strong mechanical bonding
✔ Non-corrosive flux options available
✔ RoHS compliant

Applications

• SMT & THT soldering
• Electrical wiring
• Automotive electronics
• Industrial equipment repair
• LED assembly
• Consumer electronics manufacturing
• Telecom equipment

NP Solders (also known as National Products) is an Indian manufacturer based in New Delhi that produces a wide range of soldering materials and related electronic consumables.

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