# Metal Card NFC: The Ultimate Guide to Premium Contactless Technology ## What Are Metal Card NFC Solutions? **Metal card NFC** represents the pinnacle of contactless payment and identification technology, combining the luxurious feel of metal with advanced near-field communication capabilities. As someone who has tested dozens of contactless solutions over the past decade, I can confidently say that metal NFC cards offer a distinctly premium experience that plastic cards simply cannot match. The substantial weight, cool touch, and durability create an immediate impression of quality and security. From my personal experience implementing these cards for corporate clients, I've observed that metal NFC cards significantly reduce replacement rates compared to plastic alternatives. Users treat them with more care and perceive them as valuable objects rather than disposable items. This psychological aspect shouldn't be underestimated in security applications where card handling discipline matters. ## Technical Specifications of Metal Card NFC ### Physical Dimensions and Construction - **Standard Dimensions**: 85.6mm × 54mm × 0.8mm (ISO/IEC 7810 ID-1 standard) - **Metal Core Thickness**: 0.6mm stainless steel or aluminum alloy - **Surface Finishes**: Brushed titanium, polished gold, matte black, or custom PVD coatings - **Weight Range**: 18-22 grams (approximately 3-4 times heavier than plastic cards) - **Edge Treatment**: Rounded corners with 3.18mm radius, polished edges - **Layering**: Metal core sandwiched between protective polymer layers containing antenna ### NFC Chip Technical Parameters - **Chip Compatibility**: NTAG 216, NTAG 215, DESFire EV2, or custom solutions - **Memory Capacity**: 888 bytes to 8KB user memory (depending on chip selection) - **Operating Frequency**: 13.56 MHz (ISO/IEC 14443 Type A standard) - **Communication Speed**: 106 kbit/s to 424 kbit/s - **Read Range**: 2-5cm (slightly reduced compared to plastic cards due to metal interference) - **Anti-Collision**: Supports multiple card detection and selection - **Data Retention**: Minimum 10 years - **Write Cycles**: 100,000 minimum for most premium chips - **Security Features**: Password protection, encryption, digital signature capability *Note: These technical parameters represent reference data. For precise spec