Base carrier spare wheel in EN AB 43300
External spare wheel carrier manufactured in EN AB 43300 (AlSi10Mg) by gravity die casting. Engineered for heavy-duty automotive use to Mercedes-Benz standards.
Main production challenges
- Thin wall geometry requiring controlled filling and thermal management to limit porosity and solidification defects.
- Limited draft angles complicating die extraction and increasing risk of marks and residual stress.
- Critical functional references addressed with post-cast precision CNC machining.
- Process summary and solutions
- Casting simulations to optimize gating, feeding and cooling sequence.
- Die thermal control and feeding strategies to minimize lunkers and porosity.
- Precision CNC machining for functional seats.
- Surface treatments: 25 µm KTL and Decklack topcoat for durability and corrosion protection.
Key technical specs
Material: EN AB 43300 AlSi10Mg
Process: Gravity die Casting
Finish: KTL 25 µm; Decklack
Application: External spare wheel carrier for SUVs and off-road vehicles
OEM benefits
- Higher casting density and repeatability vs sand casting.
- Improved mechanical strength and dimensional control for off-road demands.
- Assembly-ready finish with OEM-grade corrosion protection.
