Standardized specifications ensure quality and compatibility across gallium applications.
Industry Standards
Key Parameters
- Purity: 4N, 5N, 6N grades
- Impurity limits: Specific element specifications
- Physical form: Ingot, powder, pellet
- Weight tolerance: Typically ±2-5%
- Packaging: Sealed, inert atmosphere
Standards Organizations
- ASTM International
- ISO (International Organization for Standardization)
- Industry-specific standards
- Producer specifications
Chemical Composition Requirements
Primary Specification
Gallium content: 99.99% minimum (4N grade)
Typical Impurity Limits (4N Grade)
| Element | Maximum PPM |
|---|---|
| Aluminum | 10 |
| Silicon | 10 |
| Zinc | 10 |
| Copper | 5 |
| Iron | 3 |
| Tin | 5 |
| Other metals | 5 |
Physical Specifications
Ingot Form
- Weight range: 1-5 kg standard
- Dimensions: Typically 50-100 mm length
- Shape: Cast ingot or similar
- Density: 5.906 g/cm³
Purity Verification
- Certificate of Analysis required
- Independent lab testing
- Test method specification
- Traceability documentation
Storage Specifications
Temperature Range
- Optimal storage: Below 20°C
- Maximum safe: Below 28°C
- Freezer storage: -18°C or lower
- Monitor temperature
Packaging Requirements
- Sealed container
- Inert atmosphere (nitrogen or argon)
- Moisture-proof
- Protective case or box
Handling Specifications
- Avoid temperature shock
- Prevent oxidation
- Maintain seal integrity
- Regular inspection
Testing and Quality Assurance
Required Tests
- Chemical composition analysis
- Weight verification
- Physical inspection
- Documentation review
Documentation
- Certificate of Analysis
- Purchase invoice
- Shipping documentation
- Insurance certificates
Specifications for Different Forms
Metallic Gallium
- Highest standard purity requirements
- Most stringent specifications
- Ingot form standard
- Certificate of Analysis mandatory
Gallium Oxide
- Different specification framework
- Lower absolute purity percentages
- Specialized applications
- Form-specific requirements
Gallium Compounds (GaN, GaAs)
- Material-specific standards
- Performance specifications
- Semiconductor requirements
- Specialized testing