tin lead alloy soldering bar
63%tin 37%lead soldering bar is manufactured using high purity raw materials and is treated using proprietary dross reducing technology to give a solder alloy that has Low Dross Characteristics.
Sn63Pb37 welding bar is manufactured using ultra high purity raw materials and the alloy is conditioned using proprietary viscosity and dross lowering treatments. This results in a pure, low drossing, high fluidity solder alloy, which is free of cast-in impurities and included oxides.
less tin dross and high purity high fluidity solder alloy of 63%Sn37%Pb tin lead alloy soldering bar the excellent welding result bar solders lead solder bar for wave soldering SMT PCB.
1. Favorable fatigue resistance and outstanding performance
2. Ultra high electrical conductivity
3. Mid-temperature soldering, characterized by nice softness and wonderful wetting property.
4. Benefit from activated rosin core flux.
5. Ultra strong oxygen resistance. Due to the anti-oxygen material in the solder wire,Sn63Pb37 no clean solder wire can give strong resistance to oxygen.Range of application: widely used for manual soldering or automatic iron soldering operations, applicable to repair or the soldering of the electronic elements of electronic products.

Low Dross Characteristics:reducing the amount of dross in the wave pot leading to lower downturn and reducing the chance of oxide entrapped in joints.
Manufactured to Alpha’s high standards: giving a product that can be relied on to give good consistent soldering performance.
Chemical content:
| Impurity content % | ||||||||||||
| Sn | Pb | Sb | Ag | Cu | Fe | Zn | Bi | Al | As | Ni | Cd | |
| 63±2 | 37+/2 | ≤0.10% | ≤0.02% | 0.1% | ≤0.02% | ≤0.001% | ≤0.10% | ≤0.001% | ≤0.03% | ≤0.01% | <0.01% | |
| 62.5 | 37.5 | 0.032 | 0.0002 | 0.0057 | 0.002 | 0.0015 | 0.006 | 0.0024 | 0.0021 | 0.0032 | 0.0001 | |
Sn63Pb37 tin lead Bar Solder is designed to meet today’s sophisticated electronic manufacturing processes by providing a strong and reliable solder joint. All bar solder is manufactured from a variety of high purity virgin metals that exceed the IPC standards regarding impurity levels. Premium bar solder is manufactured in 1-pound and 1kg bars and sold in 50-pound boxes. Lead-free bar solder is sold in 20kg boxes. Other bar sizes are available upon request. We can also provide solder pot analysis.
Sn63Pb37 solder bar metal conten:
| ELEMENT | CLEANWAVE | ISO 9453 1 Alloy 1 |
J-STD-006A 2 Sn63Pb37B |
JIS Z3282A 3 H63A |
| Sn | 62.5-63.5 | 62.5-63.5 | 62.5-63.5 | 62.5-63.5 |
| Pb | Balance | Balance | Balance | Balance |
| Sb | 0.12 max | 0.12 max | 0.20 max | 0.12 max |
| Cu | 0.05 max | 0.05 max | 0.08 max | 0.05 max |
| Zn | 0.001 max | 0.001 max | 0.003 max | 0.002 max |
| Fe | 0.01 max | 0.02 max | 0.02 max | 0.02 max |
| As | 0.01 max | 0.03 max | 0.03 max | 0.03 max |
| Ni | 0.01 max | Not specified | 0.01 max | Not specified |
| Bi | 0.10 max | 0.10 max | 0.10 max | 0.10 max |
| Cd | 0.001 max | 0.002 max | 0.002 max | 0.002 max |
| Ag | 0.10 max | Not specified | 0.10 max | Not specified |
| Al | 0.001 max | 0.001 max | 0.005 max | 0.002 max |
| In | 0.05 max | Not specified | 0.10 max | Not specified |
Tin lead solder bar as follow:
| Alloy composition Sn/Pb |
Specific gravity | Liquid temperature | Temperature | Application |
| 70/30 | 8.67 | 195 | 230~250 | Computers, precision instruments, meters, TV, |
| 63/37 | 8.39 | 183 | 220~240 | Computers, precision instruments, meters, TV, |
| 60/40 | 8.65 | 190 | 230~250 | micro technology, coating metals |
| 55/45 | 8.75 | 200 | 240~260 | Calculators, tape recorders, telephones, quartz and |
| 50/50 | 8.85 | 216 | 255~275 | other common electronic and electrical products |
| 45/55 | 8.97 | 227 | 270~290 | |
| 40/60 | 9.30 | 238 | 295~310 | General circuit boards, toys, lamps, crafts, water tanks, plumbing solder |
| 30/70 | 9.70 | 260 | 310~325 | |
| 20/80 | 10.05 | 275 | 325~335 | General circuit boards, toys, lamps, crafts, water tanks, plumbing solder |