CNC Turning
4140 Alloy Steel CNC Machining
Custom CNC machined 4140 alloy steel parts for shafts, gears, fixtures and high-strength industrial components.
Specifications
- Material
- 4140 Alloy Steel
- Condition
- Specify the condition or heat treatment on the drawing/RFQ
- Tolerance
- To drawing; critical features reviewed individually
- Inspection
- CMM, FAI, dimensional report, material certificate
- Certification
- ISO 9001 and IATF 16949
- Quote response
- Engineering review and quotation within 24 hours
Material Overview
4140 is a chromium-molybdenum alloy steel with high strength and toughness. It is used for shafts, gears, fixtures, molds and structural components.
The material may be supplied annealed or pre-hardened. The condition affects machinability, dimensional stability and the need for stress relief or heat treatment.
What We Machine
We machine shafts, gears, bushings, fixtures, adapter plates and structural parts in 4140. The review covers the condition, the heat treatment, the critical features and the inspection plan.
Tolerances and Inspection
Critical features are verified with CMM or the agreed method. Material certificates are available. If the part is heat treated or stress relieved, final inspection should be planned after the process.
What to Specify
State the condition (annealed or pre-hardened), the heat treatment, the critical features, the tolerance and the inspection requirement. If the part needs stress relief, say so in the RFQ.
Request a Quote
Send your drawing, material, condition, tolerance, surface finish, quantity and destination. Our engineering team responds within 24 hours.
Applications
We machine shafts, gears, bushings, fixtures, molds and structural parts for industrial equipment.
Specify whether the material is annealed or pre-hardened, and whether stress relief or heat treatment is required.
FAQ
What condition should I specify?
Specify whether the material is annealed or pre-hardened, and whether stress relief or heat treatment is required.
Can you provide material certificates?
Yes. Material certificates, heat-lot traceability, FAI and CMM reports can be included in the RFQ.
What tolerances can you hold?
Tolerances are confirmed by feature. Critical features can be verified with CMM; a blanket tight tolerance is usually unnecessary and expensive.
Why Zync Precision
Zync Precision combines ISO 9001 and IATF 16949 certified manufacturing with engineering review, material traceability, CMM inspection and a 24-hour quote response.