ASTM E135 Tantalum in Scrap Alloys
The ASTM E135 standard is a critical tool for quality managers and compliance officers working within the waste management and recycling sector, particularly when dealing with metal and alloy scrap. This test provides precise quantification of tantalum content in various scrap materials, ensuring that recycled metals meet specified purity standards.
Tantalum is a highly valuable metallic element known for its exceptional corrosion resistance, high melting point, and excellent electrical and thermal conductivity. Its presence in scrap alloys can significantly impact the performance characteristics of newly fabricated products. Thus, accurate quantification of tantalum content is crucial to ensure that recycled metals are fit for purpose.
The ASTM E135 method involves dissolving a representative sample from the scrap alloy using nitric acid and perchloric acid digestion followed by colorimetric analysis with thiocyanate reagent. This process allows for accurate determination of tantalum concentrations, ensuring that recycled materials comply with industry specifications.
The test procedure is meticulously designed to minimize sample preparation variability while providing results within ±0.2% relative standard deviation at 95% confidence level. Compliance with this standard ensures not only regulatory adherence but also enhances the reputation of recycling facilities by delivering high-quality, reliable products to downstream customers.
In waste management and recycling operations, maintaining accurate records of metal compositions is essential for traceability and compliance with environmental regulations. By employing ASTM E135, quality assurance teams can ensure that their processes consistently meet stringent industry standards, thereby fostering trust among clients and stakeholders.
The precision and accuracy provided by this method make it indispensable for R&D engineers who need to understand the composition of recycled materials accurately. Furthermore, procurement departments rely on such data when selecting suppliers or sourcing raw materials, ensuring they are procuring metals that meet desired specifications.
Applied Standards
| Standard Number | Description | Purpose |
|---|---|---|
| ASTM E135-20 | Determination of Tantalum in Scrap Alloys by Colorimetric Method | To provide accurate quantification of tantalum content in scrap alloys. |
Industry Applications
- In waste management, to ensure recycled materials meet regulatory standards.
- For R&D purposes, to understand the composition of different scrap alloys.
- To support procurement decisions by verifying metal purity and consistency.
Quality and Reliability Assurance
- The ASTM E135 method ensures consistent results through standardized procedures.
- Data obtained helps in maintaining compliance with international standards like ISO, IEC, and EN.
