VT machining offers CNC Plasma Cutting for 42CrMo Steel (GB/T 3077 / ~4140 / 42CrMo4), typically supplied Q&T. Chinese equivalent of 4140/42CrMo4.
CNC Plasma Cutting Notes for 42CrMo Steel
Plasma is a fast, economical option for thicker 42CrMo Steel plate where edge finish is less critical.
For estimating, a 100 × 100 × 10 mm block of 42CrMo Steel weighs about 0.79 kg.
Process Data for CNC Plasma Cutting 42CrMo Steel
| Max practical thickness | ~50 mm (high-definition plasma) |
|---|---|
| Edge tolerance | ±0.3-0.5 mm, 1-3° bevel |
| Heat-affected zone | ~0.5-1.5 mm (allow machining stock if critical) |
| Plasma gas | Oxygen / air |
Typical values for 42CrMo Steel, Q&T; confirmed on the first part.
Full material data for 42CrMo Steel (GB/T 3077 / ~4140 / 42CrMo4) is on the CNC Laser Cutting 42CrMo Steel page.
More on CNC Plasma Cutting Steel
Finishing options, quality documentation and general cnc plasma cutting guidance for all steel grades are on our CNC Plasma Cutting Steel page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Plasma Cutting 42CrMo Steel
Send a STEP/IGES model or PDF drawing, confirm 42CrMo Steel and its condition (we usually see it supplied Q&T), the quantity, critical tolerances and any finish or certificate requirements.
42CrMo Steel in Other Processes
Related
Send the drawing, the 42CrMo Steel condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
How clean are the edges produced by CNC Plasma Cutting on 42CrMo Steel?
Laser cutting leaves 42CrMo Steel with a narrow kerf and a clean, near burr-free edge and only a small heat-affected zone.
Why is 42CrMo Steel a good choice for CNC Plasma Cutting?
42CrMo Steel is strong, economical and widely available, which makes it well suited to CNC Plasma Cutting. We tune the process to the alloy so the finished 42CrMo Steel cutting part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Plasma Cutting 42CrMo Steel?
Achievable tolerances for 42CrMo Steel cutting depend on the alloy, geometry and feature size. Laser cutting holds contour tolerances to around ±0.05 mm depending on thickness. Exact figures are confirmed against your drawing callouts.
What is the typical lead time and minimum order for CNC Plasma Cutting 42CrMo Steel?
CNC Plasma Cutting prototypes for 42CrMo Steel can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Can VT machining make custom 42CrMo Steel parts to my drawing?
Yes. 42CrMo Steel cutting is made to order from your CAD/2D drawing. Share your geometry, material grade, tolerance and quantity and we will confirm feasibility, lead time and pricing.