BMW GS 93045 Decorative Interiors - Requirements and Tests

The standard "BMW GS 93045 Interior decorative surfaces - Requirements and tests," developed by BMW, a multinational vehicle manufacturer headquartered in Germany, specifies the delivery conditions and requirements for decorative panels containing aluminum, wood, carbon fiber, back-injected decorative film, and unpainted plastic surface materials. The BMW GS 97017 standard applies to chrome-plated plastic parts.

For all substrates, preliminary testing must be performed on semi-finished products (decorative film, aluminum sheet) or test panels (wood, plastic, carbon fiber) during development to ensure approval before production. The part structure must be suitable for subsequent mass production and documented in the bill of materials and processes.

Final verification is performed on the component with the corresponding part number from the serial tool and serial process.

The detailed production process must be clearly traceable by the supplier through appropriate labelling.

If the decorative scope is supplied as a purchased part, the supplier is responsible for correctly performing the required testing. The test results are submitted to the materials and process engineering department. The supplier must then complete and sign the relevant documentation and submit it to the materials and process engineering department for approval.

Unless otherwise specified, tests are carried out in a standard climate according to DIN EN ISO 291. In general, the material or component to be tested must be stored for at least 24 hours in a standard climate according to DIN EN ISO 291.

The purpose of this standard is to ensure consistent quality of decorative coatings.

In the high-stakes world of automotive engineering, where every gram counts and safety is non-negotiable, BMW's own materials standards have long been the gold standard. The BMW GS 93045 standard defines the steels that form the backbone of BMW vehicles.

Future innovations, ultra-high-strength alloys and BMW's efforts in lightweighting technology suggest that the BMW GS 93045 standard could be the next stage in BMW's steel strategy.

The GS 93045 standard aims to:

• Ultra-lightweight for electric vehicles: BMW is targeting 20 percent better efficiency in new models. The BMW GS 93045 standard could enable thinner gauges (0,7-1,2 mm) without compromising the vital rigidity for battery housings and undercarriages.
• Improved crash performance: The BMW GS aims to reduce impact penetration in side impacts by offering 15 percent higher energy absorption rates than the 93032-7 standard.
• Sustainability advantage: Alloyed with recycled content and low-carbon production methods, this technology aligns with BMW's 2030 carbon neutrality target. Chemical adjustments (increased manganese (up to 15 percent) and reduced chromium) can lower melting points for energy-efficient forging.

The BMW GS 93045 standard is considered important in automotive materials science, particularly in relation to BMW's engineering and sustainability goals. The key reasons for this importance are:

• Ultra-lightweighting for electric vehicles (EVs): Reducing vehicle weight is critical to extending vehicle range and improving efficiency. The BMW GS 93045 standard, an advanced high-strength steel with tensile strengths potentially exceeding 1.200 MPa, could enable thinner and lighter components (e.g., thicknesses of 0,7-1,2 mm) without compromising structural integrity. This could shave 50-100 kg off vehicles, increasing range by up to 10-15 percent.
• Enhanced safety and crash performance: The BMW GS 93045 standard, which is considered to have a complex phase or quench and partition microstructure, can provide 15-20 percent better energy absorption than the current BMW GS 93032-7 dual-phase steel. This enhances its safety reputation by improving occupant protection in crash scenarios, particularly in side impacts.
• Sustainability alignment: BMW's 2030 carbon neutrality target requires low-impact materials. By incorporating higher recycled content and energy-efficient production, the BMW GS 93045 standard can reduce the carbon footprint of steel production by 10–20 percent compared to conventional alloys. This aligns with BMW's environmentally friendly initiatives.
• Production efficiency: Features such as improved formability and laser weldability can streamline production processes, reducing defects and costs in high-volume plants. This is crucial for BMW to scale up its electric vehicle production with tight margins.
• Competitive advantage: Going beyond the current BMW GS 93032 standard, the BMW GS 93045 standard puts BMW ahead of its competitors in the race for stronger, lighter, and more environmentally friendly materials. It could set a benchmark for the industry by redefining chassis and battery housing designs.

In short, BMW GS 93045 is important because it can enable BMW to produce safer, lighter, and more sustainable vehicles, directly supporting its electric vehicle goals and environmental commitments while maintaining performance and manufacturability. The metals BMW uses are not ordinary metals. The BMW GS 93045 standard is designed for deep drawing, impact resistance, and weight reduction—key elements of the company's pursuit of efficiency and performance.

Our organization, with its competent and experienced team, has been understanding the needs of its customers for years, providing them with the advanced testing services they need, and assisting them in the establishment, implementation, and improvement of management systems. In this context, we also provide testing services in accordance with the "BMW GS 93045 Decorative Interior Surfaces - Requirements and Testing" standard.