CNC Milling
3-axis, 4-axis and 5-axis CNC milling for alloy steel parts with pockets, slots, holes, contours and complex multi-side features.
Best for: Brackets, housings, tooling, fixtures and complex structural parts.
Alloy Steel CNC Machining FAQs
Yes. Hardened alloy steel can be machined, but the final hardness, part geometry and tolerance requirements need to be reviewed first. Depending on the application, finish machining or grinding may be required after heat treatment.
Yes. The machining sequence can be planned around the heat-treatment process. For tight-tolerance parts, rough machining is often completed first, followed by heat treatment and final machining or grinding.
It depends on the required strength, toughness, wear resistance and heat-treatment condition. Common options include 4140, 4130, 4340 and 8620. You can send us your application requirements if you need help selecting a suitable grade.
Yes. Material certificates can be provided when required. Please specify any documentation requirements when requesting a quote.
Yes. We support prototypes, low-volume production and repeat orders, with no strict MOQ for most custom machining projects.
Typical precision machining tolerances can reach ±0.005 mm on suitable features. Final achievable tolerance depends on part size, geometry, material condition and heat treatment.
Yes. We support large-format CNC machining, including gantry machining for larger alloy steel components. Maximum part size depends on the selected process and machine setup.
Yes. We can support machining together with processes such as heat treatment, carburizing, nitriding, black oxide, zinc plating, nickel plating and other available finishes based on project requirements.
3D files such as STEP, STP, IGES or IGS are preferred for machining review. You can also send 2D drawings in PDF, DWG or DXF format with tolerances, material grade and quantity.
Most RFQs can be reviewed within 24 hours after we receive the drawing, material, quantity and tolerance requirements.