Precision CNC Machining China Tin Alloy Weldment Custom Fabrication
Services Product Overview Tin alloy weldments are structural components manufactured using
high-purity tin-based alloy materials through precision welding
processes. Our products primarily employ eco-friendly alloy
formulations such as Sn99.3/Cu0.7, exhibiting excellent welding
performance and mechanical strength. During welding, tin alloys
demonstrate superior fluidity and wettability, forming bright and饱满
solder joints. The outstanding oxidation resistance significantly
reduces dross formation. These weldments are suitable for various
processes including wave soldering and manual dip soldering, with
operating temperatures typically controlled within 265±5℃ range to
ensure consistent welding quality. Key Features - High-Purity Materials: Utilizes high-purity metal raw materials processed through vacuum
deoxidation, with strictly controlled impurity content (Pb≤0.05%),
ensuring uniform composition and stable performance.
- Excellent Welding Properties: Features rapid wetting time and tensile strength up to 42MPa, with
superior spread ratio compared to conventional solder materials,
producing bright and full solder joints.
- Oxidation Resistance and Energy Efficiency: Special anti-oxidation formulation maintains mirror-like surface
below 300℃, with dross generation only 1/7 of ordinary solder,
effectively reducing energy consumption and maintenance costs.
- Environmental Compliance: Products comply with EU ROHS and WEEE directives, featuring
halogen-free design that meets global environmental standards for
export electronics.
- Precision Machining: Employs CNC precision machining technology to ensure dimensional
accuracy and tight structure, enabling customized production of
complex shapes.
Technical Specifications | Parameter Category | Specifications | Test Standard |
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| Material Composition | Sn99.3/Cu0.7, SAC0307(Sn99/Ag0.3/Cu0.7), SAC305(Sn96.5/Ag3.0/Cu0.5) | ASTM E54 | | Melting Range | Solidus: 220℃, Liquidus: 227℃ | ISO 8000 | | Physical Properties | Specific Gravity: 7.33 g/cm³, Hardness: 14.1 HV, Specific Heat:
0.17 J/kg·℃ | ASTM B193 | | Mechanical Properties | Tensile Strength: 42 MPa, Elongation: 22% | ISO 6892 | | Thermal Expansion Coefficient | 1.79(30-100℃), 2.30(100-150℃) | ASTM E228 | | Operating Temperature | Wave Soldering: 265±5℃, Dip Soldering: ~290℃ | - | | Impurity Content | Pb≤0.05%, Sb≤0.05%, Bi≤0.1%, Fe≤0.02% | ICP-MS |
Applications - Consumer Electronics: Welding applications for smartphone camera modules, TWS earphones,
smart watches, providing high-precision connection solutions.
- Automotive Electronics: Engine control units, sensor connectors withstand high-temperature
vibration environments.
- Industrial Electrical Equipment: Component welding for transformers, inductors, relays, ensuring
long-term operational reliability.
- Medical Devices: Internal connections for medical sensors and portable equipment,
meeting biocompatibility requirements.
- Aerospace: Aviation connectors, hermetic packaging, satisfying
high-reliability and corrosion resistance demands.
Customization Services We provide comprehensive customized solutions, capable of adjusting
alloy composition ratios and offering special alloy formulations
like Sn-Cu-Ni. Support non-standard size design with weldment
thickness range 0.1-5mm, special surface treatments including matte
finish and anti-oxidation processes. Small batch orders accepted
with prototyping services and rapid response to design changes.
Implement complete quality traceability system to ensure consistent
batch performance. Support and Services - Technical Support: Provide welding parameter optimization and on-site process
debugging to address welding defects.
- Quality Assurance: Material certificates and ROHS compliance reports provided for
each batch, support third-party testing.
- After-Sales Service: Establish customer files with regular follow-ups and preventive
maintenance recommendations.
- Logistics Assurance: Standard packaging 20kg/box with moisture and oxidation protection
ensuring transportation safety.
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