Custom Automotive Suspension & Steering Solutions for OEMs and Tier 1 Suppliers
Precision investment casting and CNC machining for control arms, steering knuckles, subframes, tie rods, and more. Engineered for strength, lightweight performance, and durability — from material science to finished components.
Years of Expertise
Certified Alloys
CNC Positioning
Programs Delivered
Our Material Science
Allied Metal offers 100+ material options, specifically selected for high-impact, fatigue-resistant, and corrosion-resistant suspension and steering applications — fully controlled from melting to heat treatment.
High-Strength Steels
4140, 4340, 4130, 15B36, 8620 — ideal for control arms, knuckles, and tie rods. Through-hardening and case-hardening grades for optimal toughness and fatigue resistance.
Lightweight Aluminum
A356, A6061, 7050, A380 — for subframes and knuckle housings, reducing unsprung mass while maintaining structural rigidity and corrosion resistance.
Ductile & ADI Irons
ADI 1050, 1200-03, 500-7 — for heavy-duty knuckles and brackets, delivering exceptional impact strength and vibration damping.
Full Traceability & Compliance
Complete material certification, PPAP Level 3, and compliance with ASTM, SAE, ISO, and customer-specific standards. Including stainless, titanium, and nickel-base alloys.
Typical Suspension & Steering Components
We manufacture a comprehensive range of custom parts for OEMs, Tier 1 suppliers, and aftermarket brands — covering steering, control, and chassis systems.
Steering Systems
- Tie Rod Ends
- Inner Tie Rods
- Pitman Arms
- Steering Gear Housings
- Steering Arms
- Center / Drag Links
Control & Support
- Upper & Lower Control Arms
- Steering Knuckles (Uprights)
- Ball Joint Housings
- Stub Axles
- Trailing Arms
- Strut Mounts
Chassis & Brackets
- Subframe Assemblies
- Suspension Brackets
- Stabilizer Bar Links
- Leaf Spring Hangers
- Anti-Roll Bar Links
- Wheel Carriers
How We Enhance Suspension & Steering Performance
Investment casting + CNC machining — delivering measurable gains in safety, handling, and durability.
High-accuracy CNC ensures perfect wheel alignment and tire wear
Casting + heat treatment + CNC — proven part-level results for suspension & steering components
+42% Impact Energy Absorption · -28% Road Noise Transfer · ±1.5 µm Bore Concentricity · 100% NDT Inspection
Core Manufacturing Capabilities
Precision investment casting, multi‑axis CNC, and heat treatment — all under one roof
Investment Casting
Complex internal geometries, near-net shape, excellent surface finish for control arms, knuckles, and more.
- CT5-7 Accuracy
- Steel / Al / Iron
- Steel / Al / Iron
5-Axis CNC Machining
Precision milling, boring, and threading for critical mounting faces and bearing bores.
- ±0.003 mm
- IT5 Critical Fits
- 100% CMM
Heat Treatment & Coating
Controlled carburizing, nitriding, induction hardening. Zinc-nickel, DLC, manganese phosphate, and more.
- HRC ±1.5
- Case Depth 0.3-2.0mm
- NADCAP
Integrated Delivery
Casting + machining + heat treatment + coating — single-source responsibility, fast response.
- Prototypes 10-15 days
- Flexible Low Volume
Gallery — Engine & Powertrain Parts
Client Testimonials
What engineers and procurement leaders say about our powertrain parts
“Allied Metal’s lightweight knuckles helped us reduce unsprung mass while maintaining exceptional stiffness. The casting precision and CNC consistency made chassis tuning remarkably straightforward.”
Chassis Engineering Director · European Luxury OEM
“From prototype to production, the fatigue performance of the control arms exceeded our expectations. Their material science team provided exceptional support with ADI applications — a truly reliable technical partner.”
Senior Procurement Manager · Global Commercial Vehicle Supplier
“We’ve used Allied’s subframe castings across three platforms. Their integrated casting-plus-machining approach significantly reduced welding and assembly errors, with consistently stable delivery quality.”
VP of Supply Chain · North American Tier 1 Automotive Group
Ready to Start Your Suspension or Steering Project?
Share your drawings or technical requirements with our engineering team. We’ll respond within 24 hours with DFM feedback and a firm quote — prototypes and low-volume runs are always welcome.
B2B engineering partnerships · Low-volume flexible start · Seamless transition to production