Custom Alloy Steel CNC Machining Services

From prototypes to low-volume production, we tame the toughest alloys.

We provide precision CNC machining services for various alloy steel grades. Our capabilities include CNC milling and turning for both individual prototypes and production batches. We deliver parts according to your specified tolerances and material requirements.

AISI 4130

AISI 4130 is a chromium-molybdenum alloy structural steel with low alloy content, featuring good comprehensive performance. It is widely used in parts requiring both weldability and moderate strength, and is easy to process via conventional CNC methods.

AISI 4140

AISI 4140 is a chromium-molybdenum alloy structural steel with excellent comprehensive mechanical properties. It is a universal alloy steel widely used in precision mechanical parts, featuring adjustable performance through quenching and tempering.

AISI 4340

AISI 4340 is a nickel-chromium-molybdenum alloy structural steel with higher alloy content than 4140. It offers superior mechanical properties, making it ideal for high-load and critical structural components.

AISI 8620

AISI 8620 is a nickel-chromium-molybdenum alloy structural steel with excellent carburizing performance. It is commonly used in transmission parts requiring high surface hardness and tough core.

AISI 52100

AISI 52100 is a high-carbon chromium alloy bearing steel, a subcategory of alloy structural steel. It is characterized by high hardness and wear resistance, suitable for wear-resistant and precision parts.

FAQs About CNC Machining Services

No. We support projects of all sizes, from a single prototype unit to low-volume production runs.

Standard lead times are typically 10–15 business days. Expedited services (Rapid Prototyping) can be completed in as little as 3–5 business days, depending on part complexity and material availability.

In most cases, we source materials from our approved suppliers to ensure quality control. However, we can machine customer-supplied materials for specialized alloys or specific requirements upon engineering review.

Unless otherwise specified, our general tolerance standard is ISO 2768-m (±0.125 mm) for metals and ±0.25 mm for plastics. Precision tolerances ±0.005 mm are achievable but must be explicitly stated in 2D technical drawings.

Our facility can accommodate parts up to 4000 x 1500 x 600 mm for milling and Ø200 mm x 500 mm for turning.

Yes. We can install inserts (e.g., Helicoils, PEM fasteners) and perform basic mechanical assembly of machined components prior to shipment.

To provide an accurate quote, we require a 3D CAD file (STEP, IGES, or X_T format). If the part has threaded holes, tight tolerances, or specific surface finish requirements, a 2D PDF drawing must also be provided.

We take IP protection seriously. All files are stored securely, and we are willing to sign a Non-Disclosure Agreement (NDA) prior to receiving your data.

Yes. We can provide material certificates (COA) and dimensional inspection reports upon request. Please specify this requirement when placing your order.

We ship globally using major carriers (DHL, FedEx, UPS). Shipping terms are typically Ex Works (EXW) or DAP, depending on the agreement.

Start your manufacturing project today

No Minimum Order Quantity (MOQ). Strict quality control. Fast global shipping.