Specs and Info
General Alloys
Our general alloy offering includes widely used casting materials for dependable performance across a variety of manufacturing applications. These alloys are suited for customers who need established specifications, consistent quality, and reliable supply. Nikkei’s current site groups examples such as AlSi7Mg type, AlSi10MnMg type, piston alloys, Al-Mg type, and Al-Ni type under its standard product offering.
Licensed Alloys
Through strategic partnerships, we offer access to specialty aluminum alloys not commonly available through standard domestic channels. This includes Rheinfelden alloys for lightweight and advanced casting applications, giving customers expanded material options for more specialized requirements. Nikkei’s site specifically highlights its Rheinfelden relationship and lists six named Rheinfelden alloy families.
Developed Alloys
Our developed alloys are designed for applications that require more specialized mechanical, thermal, or wear-related performance. Supported by the broader Nikkei MC Aluminum Group, these materials help customers address demanding component requirements with more tailored alloy solutions. The current site connects these developed alloys to applications such as heat sinks, engine brackets, transmissions, compressor parts, and radiation plates.
| Alloy | Type | Process | Temper | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) | Key Characteristics | Applications |
|---|---|---|---|---|---|---|---|---|
| Silafont®-36 | Licensed (Rheinfelden) | Die Casting | T6 | 250–290 | 7–12 | Heat treatable; excellent castability / weldability / corrosion resistance; very low porosity | "Automotive structural frame & cross-members, engine brackets & mounts, crash-relevant nodes (door sills, B-pillars)" | |
| Silafont®-38 | Licensed (Rheinfelden) | Die Casting | T6 | 300–345 | 6–9 | Air-quenchable after solution treatment — minimizes distortion on large complex parts; higher proof stress than Silafont-36 | "Automotive structural frames requiring tight dimensional tolerances, engine mounts / strut towers / subframes, EV battery tray structures" | |
| Castasil®-37 | Licensed (Rheinfelden) | Die Casting | F | 260–300 | 10–14 | As-cast (no heat treatment needed); excellent dimensional stability; very good riveting & clinching for multi-material assembly | "Automotive body-in-white frame nodes & structural connectors, EV battery enclosures, multi-material joints with steel or CFRP" | |
| Castaduct®-42 | Licensed (Rheinfelden) | Die Casting | F | 240–280 | 10–22 | Highest ductility in Rheinfelden lineup without heat treatment; excellent seizure & corrosion resistance; superior rivetability | "Safety-critical automotive castings (crash nodes, impact absorbers), EV battery cases, high-energy-absorption frame connectors" | |
| Castaman®-35 | Licensed (Rheinfelden) | Die Casting | T6 | 250–340 | 6–12 | Engineered for high strength & elongation with increased recycled scrap tolerance; supports OEM sustainability targets | "Automotive structural frame in sustainability-driven programs, parts where secondary/recycled aluminum content is required" | |
| Castasil®-21 | Licensed (Rheinfelden) | Die Casting | F | 200–230 | 6–9 | Exceptional thermal conductivity (190 W/mK) and electrical conductivity (43–48.5% IACS); pure alloy chemistry; no heat treatment needed | "Automotive & industrial heatsinks, electric motor rotor material, power electronics housings, EV inverter & charger housings" | |
| A360 | General | Die Casting | F | 295 | 76 | Best corrosion resistance among common die casting alloys (low Cu); superior pressure tightness; good elevated-temperature strength; requires tighter process control than A380 | "Transmission & fuel system components, marine & outdoor hardware, hydraulic bodies & pressure-tight housings" | |
| A413 | General | Die Casting | F | 240 | 72 | Best-in-class pressure tightness; excellent castability for thin walls & intricate geometries; near-eutectic composition for outstanding fluidity | "Hydraulic cylinders & pressure vessels, intricate thin-walled components, marine hardware & outboard motor parts" | |
| A356.1 / A356.2 | General | Gravity / Permanent Mold | T6 | 285 | Most widely used gravity casting alloy in automotive; excellent castability / pressure resistance / corrosion resistance; A356.2 is premium grade with tighter Fe limits for better elongation | "Aluminum road wheels, steering knuckles & suspension arms, engine parts & hydraulic components" | ||
| C355.2 | General | Gravity / Permanent Mold | T6 | 300 | Good castability & pressure tightness; heat treatable to T6; Cu addition provides elevated-temperature strength vs. pure Al-Si-Mg; reliable in complex shapes | "Transmission cases & manifolds, brake drums & industrial pump bodies, automotive & aerospace structural components" | ||
| DX30 | Developed — High Toughness | Die Casting | T6 | 280 | 11 | Al-Si-Mg system; heat treatable; high castability & corrosion resistance; significantly better toughness than standard ADC12 | "Brackets, structural frames, grip frames" | |
| DX36 | Developed — High Toughness | Die Casting | F | 265 | 15 | Al-Si system; non-heat-treatment type; good corrosion resistance in as-cast condition | "Brackets, structural frames, grip frames" | |
| DX50 | Developed — High Toughness | Die Casting | F | 300 | 9 | Al-Mg system; non-heat-treatment type; excellent corrosion resistance (rated A) | "Brackets, structural frames, grip frames" | |
| DX55 | Developed — High Toughness | Die Casting | F | 270 | 17 | Al-Mg system; non-heat-treatment type; excellent corrosion resistance | "Brackets, structural frames, grip frames" | |
| DX60 | Developed — High Toughness | Die Casting | F | 334 | 22 | Al-Mg system; highest elongation in group without heat treatment; excellent corrosion resistance | "Brackets, structural frames, grip frames, crash-relevant components" | |
| DX16A | Developed — High Thermal Conductivity | Die Casting | F | Al-Si system; high castability and high thermal conductivity | "LED headlights, heatsinks, motor components, power electronics" | |||
| DX17 | Developed — High Thermal Conductivity | Die Casting | T5 | Al-Si system; 185 W/mK thermal conductivity / 46% IACS electrical conductivity — nearly double ADC12 | "LED headlights, heatsinks, motor components, power electronics" | |||
| DX18 | Developed — High Thermal Conductivity | Die Casting | F | Al-Si system; 145 W/mK thermal conductivity in as-cast condition; used in LED headlight applications | "LED headlights, heatsinks" | |||
| DX19 | Developed — High Thermal Conductivity | Die Casting | T5 | 247 | Al-Si system; 156 W/mK thermal conductivity; stronger option in the thermal conductivity group | "LED headlights, heatsinks, motor components requiring strength" | ||
| DX01 | Developed — High Thermal Conductivity | Die Casting | F | 127 | 30 | Al-Fe system; highest electrical conductivity in die-cast lineup at 51% IACS; used where conductivity is primary requirement | "Power electronics, high-conductivity applications" | |
| DX02 | Developed — High Thermal Conductivity | Die Casting | F | 143 | 22 | Al-Fe system; 51% IACS electrical conductivity | "Power electronics, high-conductivity applications" | |
| DX26 | Developed — High Thermal Conductivity | Die Casting | Al-Ni system; 190 W/mK thermal conductivity / 48% IACS / 17.5% elongation | "Heatsink applications, motor components" | ||||
| DX80 | Developed — High Rigidity | Die Casting | Al-Si system; Young's modulus 98 GPa (vs. ADC12's 71 GPa) — near cast iron without the weight; low linear expansion coefficient (16.6 × 10⁻⁶/°C); specific gravity 2.85 | "Composite-less high-rigidity structural components, applications requiring minimal elastic deformation" | ||||
| NH41 | Developed — Wear Resistant | Die Casting | T5 | 338 | Al-Si-Cu-Mg hypereutectic system; uniformly dispersed primary Si crystals (20–30 μm) — finer than ADC14; wear resistance equivalent to B390 with significantly lower tool wear | "Front/rear carriers, compressor components, sliding-contact components" | ||
| NH42 | Developed — Wear Resistant | Gravity Casting | T6 | 381 | 0.7 | Al-Si-Cu-Mg hypereutectic system; comparable wear resistance to A390 with improved gravity castability | "Front/rear carriers, gravity-cast wear-resistant components" |