Product Parameters
| Item | Specification |
|---|---|
| Material | Ductile Iron (ASTM A536 65-45-12), Aluminum (6061-T6) |
| Manufacturing | Lost Foam Casting, Sand Casting, Forging |
| Application | Passenger vehicles, light trucks, commercial vehicles |
| Heat Treatment | Annealed, Normalized, Q&T |
| MOQ | 10 pcs |
description
Automotive steering knuckles are the pivot points where the steering system connects to the suspension - the knuckle carries the wheel load, transmits steering forces, and positions the wheel relative to the suspension. The knuckle must be strong enough to handle high cornering loads and impact from road hazards without deforming or cracking. Ductile iron is the most common material for steering knuckles - the nodular graphite microstructure provides good strength and toughness at reasonable cost. The lost foam casting process produces near-net-shape knuckle geometry with good surface finish and consistent mechanical properties.
Why the Knuckle Geometry Is Complex
FAQ
Q1: MOQ?
A1: 10 pieces.
Q2: Materials?
A2: Ductile iron (65-45-12) for most applications. 6061-T6 aluminum for lightweight performance.
Q3: Manufacturing methods?
A3: Lost foam casting (standard), sand casting, forging.
Q4: Heat treatment?
A4: Annealed or normalized for ductile iron. T6 for aluminum.
Q5: Machined surfaces?
A5: Steering arm, tie rod, ball joint seats, brake mount, wheel hub - all machined to tolerance.
Q6: Custom configurations?
A6: Yes. Custom knuckle geometry for specific suspension designs.
Quality is non-negotiable in precision manufacturing. Every component undergoes rigorous inspection at each stage of production.
- IATF 16949 - Automotive quality management system for safety-critical components
- PPAP / PPF - Production Part Approval Process documentation available on request
- AIAG Core Tools - APQP, FMEA, SPC, and MSA documentation on demand
- CMM Inspection - Coordinate measuring for complex geometries and tight tolerances
- Surface Roughness Measurement - Ra, Rz, and Rt charting with every inspection report
- Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
- Material Traceability - Heat number tracking from raw material to finished part
From raw material to finished product, every step is controlled and documented:
- Pattern Making - Wooden or metal pattern fabrication for sand/centrifugal/investment casting
- Molding - Sand casting, shell mold, centrifugal, or lost-wax investment casting setup
- Melting & Pouring - Controlled furnace melting with chemistry and temperature monitoring
- Solidification & Shakeout - Controlled cooling with riser/removal and core shakeout
- Heat Treatment - Annealing, normalizing, or solution treatment per specification
- Machining - CNC machining, drilling, and tapping to final dimensions
- Surface Treatment - Grinding, welding, or coating as required
- Inspection & Testing - Dimensional, visual, hydrostatic, or NDT inspection
- Cleaning & Packaging - Sand removal, degreasing, rust prevention, and packaging
Hot Tags: automotive steering knuckles, China automotive steering knuckles manufacturers, Automotive Rods, Control Arms, Drive Shaft U Joints, I Beam Rods, Lateral Arms, U-Joints