For critical applications in power systems, electric vehicles, and renewable energy, quality assurance of busbar materials is non-negotiable. At Xinyi, we adhere to rigorous standards and industry-accepted testing protocols to guarantee the consistent performance of our E91E aluminum busbars. From raw material certification to finished product inspection, every stage is carefully controlled to meet global expectations.

Compliance with International Standards

Xinyi’s E91E aluminum busbars are produced in accordance with relevant national and international specifications, including:

• GB/T 3190 (China national aluminum alloy standard)
• ASTM B317M (USA standard for aluminum busbar and electrical conductors)
• EN 573 and EN 755 (European aluminum standards)
• ISO 9001 and IATF 16949 quality management certifications

Key Properties Subject to Testing

Each E91E aluminum busbar batch undergoes comprehensive quality control measures, focusing on the following critical parameters:

• Electrical Conductivity: Measured using eddy current testing or Kelvin four-probe method to ensure ≥61.5% IACS.
• Mechanical Properties: Tensile strength, yield strength, and elongation are tested according to ASTM E8/E8M.
• Chemical Composition: Verified by Optical Emission Spectroscopy (OES) to match E91E alloy requirements.
• Dimensional Accuracy: Busbar width, thickness, and flatness are measured with calibrated precision tools.
• Surface Quality: Visual inspection for burrs, oxidation, scratches, and plating uniformity (if applicable).

Optional Advanced Testing

For customers in aerospace, automotive, or high-reliability sectors, Xinyi also offers advanced testing upon request:

• Microstructure analysis (grain size, phase distribution)
• Salt spray corrosion resistance testing (per ASTM B117)
• Thermal cycling and thermal conductivity measurements
• Plating adhesion and coating thickness analysis

Traceability and Batch Control

All E91E aluminum busbars are produced with full batch traceability, supported by heat numbers and detailed inspection records. Customers can request mill test certificates (MTCs) and inspection reports for each shipment, ensuring transparency and supply chain accountability.

In-House and Third-Party Testing Options

Xinyi conducts in-house quality checks in our ISO-certified labs. Additionally, we cooperate with third-party inspection agencies like SGS, BV, and TUV for independent validation when required by customers or project contracts.

Why Quality Matters for E91E Busbars

Whether used in high-voltage switchgear or electric vehicle battery packs, busbars must withstand long-term electrical and thermal loads without degradation. High-quality E91E aluminum busbars from Xinyi ensure reliability, safety, and long-term performance across demanding environments.

Partner with Xinyi for Certified Busbar Solutions

Looking for a qualified aluminum busbar supplier that meets international quality expectations? Contact Xinyi for customized E91E solutions, complete with full testing, documentation, and logistics support to meet your application needs.