Carburizing hardens the surface of steel parts by diffusing carbon into the material, creating a high-wear, fatigue-resistant outer layer while preserving a ductile and tough core for impact strength.
CNC carburizing services enhance surface hardness and wear resistance while maintaining a tough core. Ideal for gears, shafts, bearings, and heavy-duty components across automotive, aerospace, and machinery industries.
Carburizing is a thermochemical heat treatment where steel parts are heated in a carbon-rich environment, allowing carbon atoms to diffuse into the surface layer. This increases carbon content near the surface, enabling subsequent hardening while maintaining a tough core.
The process is widely used for parts that require excellent wear resistance, high fatigue strength, and long service life, such as gears, cams, and drive components. Carburizing may be followed by quenching and tempering to refine hardness and toughness balance.
Forms a hard, durable surface to resist abrasion and surface fatigue.
Improves load-carrying capacity and resistance to bending and contact stress.
Maintains a ductile core to absorb shock and impact without brittle failure.
| Feature | Info |
|---|---|
| Case Depth | Typically 0.3–3.0 mm depending on cycle time and application. |
| Core Hardness | Maintains ductile, impact-resistant properties in the core. |
| Surface Hardness | Achieves 58–62 HRC for maximum wear resistance. |
| Distortion Control | Vacuum carburizing minimizes distortion for precision parts. |
| Industries | Automotive, aerospace, industrial machinery, power tools. |
Carburizing Service for Wear-Resistant Steel Parts helps CNC part buyers create a hard surface case for gears, shafts, pins, and wear-loaded steel components. MTSPi CNC reviews the machined geometry, material grade, tolerance-sensitive areas, cosmetic expectations, and inspection needs before recommending a finishing route.
This page is written for sourcing and engineering teams that need practical finishing decisions, not just a process name. Share drawings, material, quantity, finish standard, color or texture target, masking requirements, and critical dimensions with the RFQ.
| Buyer question | Why it matters | Practical action |
|---|---|---|
| Material compatibility | Confirm that the material and alloy can accept the finish reliably | Avoid adhesion, color, hardness, or corrosion problems |
| Dimensional impact | Review coating thickness, edge build-up, holes, threads, masking, and critical fits | Protect assembly dimensions after finishing |
| Appearance standard | Define visible faces, gloss, matte texture, color range, and acceptable marks | Keep cosmetic expectations realistic |
| Inspection needs | Select visual checks, thickness checks, hardness checks, adhesion tests, or sample approval as needed | Match evidence to part function and buyer risk |
Surface treatment should be planned before final machining whenever possible. Threads, bores, bearing fits, sealing faces, electrical contact areas, and cosmetic surfaces may need different handling. For repeat work, keep a finish sample, color reference, thickness target, and packaging instruction with the drawing revision.
What should I confirm before choosing this finish? Confirm material grade, part function, cosmetic standard, masking needs, tolerance-sensitive surfaces, expected environment, and inspection requirements.
Can MTSPi CNC machine and finish the same parts? Yes. MTSPi CNC can support machining, finishing coordination, inspection, and packaging so the finish plan matches the machined part requirements.
Will surface treatment affect dimensions? Some finishes add thickness, change edges, or affect holes and threads. Critical fits should be marked on the drawing and masking or post-finish checks should be discussed early.
