Finishing
CY200 is described for finishing; CY600 for fine finishing of hardened steels and cast irons. Share your surface finish target and cutting allowance.
Ceramic Inserts

Product photo shows the SNGN family. Confirm the exact specification and edge preparation for your order.
A square ceramic insert family for grade-dependent turning applications. Compare dimensions, specify your machining conditions and request the right grade for your workpiece.
Grade choice is an enquiry preference. Supply and compatibility will be confirmed.
Request a QuoteAsk an Application EngineerDimensions in mm. Select a row to carry its model into your enquiry.
| ISO model | ANSI / ASA | d | t | r | Enquiry |
|---|---|---|---|---|---|
| SNGN 090304 | SNGN 321 | 9.52 | 3.18 | 0.4 | |
| SNGN 090308 | SNGN 322 | 9.52 | 3.18 | 0.8 | |
| SNGN 090312 | SNGN 323 | 9.52 | 3.18 | 1.2 | |
| SNGN 090404 | SNGN 331 | 9.52 | 4.76 | 0.4 | |
| SNGN 090408 | SNGN 332 | 9.52 | 4.76 | 0.8 | |
| SNGN 090412 | SNGN 333 | 9.52 | 4.76 | 1.2 | |
| SNGN 120404 | SNGN 431 | 12.70 | 4.76 | 0.4 | |
| SNGN 120408 | SNGN 432 | 12.70 | 4.76 | 0.8 | |
| SNGN 120412 | SNGN 433 | 12.70 | 4.76 | 1.2 | |
| SNGN 120416 | SNGN 434 | 12.70 | 4.76 | 1.6 | |
| SNGN 120420 | SNGN 435 | 12.70 | 4.76 | 2.0 | |
| SNGN 120604 | SNGN 441 | 12.70 | 6.35 | 0.4 | |
| SNGN 120608 | SNGN 442 | 12.70 | 6.35 | 0.8 | |
| SNGN 120612 | SNGN 443 | 12.70 | 6.35 | 1.2 | |
| SNGN 120616 | SNGN 444 | 12.70 | 6.35 | 1.6 | |
| SNGN 120704 | SNGN 451 | 12.70 | 7.94 | 0.4 | |
| SNGN 120708 | SNGN 452 | 12.70 | 7.94 | 0.8 | |
| SNGN 120712 | SNGN 453 | 12.70 | 7.94 | 1.2 | |
| SNGN 120716 | SNGN 454 | 12.70 | 7.94 | 1.6 | |
| SNGN 120720 | SNGN 455 | 12.70 | 7.94 | 2.0 | |
| SNGN 150404 | SNGN 531 | 15.87 | 4.76 | 0.4 | |
| SNGN 150408 | SNGN 532 | 15.87 | 4.76 | 0.8 | |
| SNGN 150412 | SNGN 533 | 15.87 | 4.76 | 1.2 | |
| SNGN 150416 | SNGN 534 | 15.87 | 4.76 | 1.6 | |
| SNGN 150708 | SNGN 552 | 15.87 | 7.94 | 0.8 | |
| SNGN 150712 | SNGN 553 | 15.87 | 7.94 | 1.2 | |
| SNGN 150716 | SNGN 554 | 15.87 | 7.94 | 1.6 | |
| SNGN 190608 | SNGN 642 | 19.05 | 6.35 | 0.8 | |
| SNGN 190612 | SNGN 643 | 19.05 | 6.35 | 1.2 | |
| SNGN 190616 | SNGN 644 | 19.05 | 6.35 | 1.6 | |
| SNGN 190712 | SNGN 653 | 19.05 | 7.94 | 1.2 | |
| SNGN 190716 | SNGN 654 | 19.05 | 7.94 | 1.6 | |
| SNGN 190720 | SNGN 655 | 19.05 | 7.94 | 2.0 | |
| SNGN 250720 | SNGN 854 | 25.40 | 7.94 | 2.0 | |
| SNGN 250724 | SNGN 856 | 25.40 | 7.94 | 2.4 | |
| SNGN 250924 | SNGN 866 | 25.40 | 9.52 | 2.4 | |
| SNGN 3812R | 38.10 | 12.70 | 0.4 |
Dimensions in mm as labeled in the catalog. Reference specifications do not establish current stock; confirm the exact drawing and grade before ordering.
Browse more ceramic insert shapes →The CY descriptions below are application references. Ask Huamin to confirm a suitable material system and the exact grade–model combination for this geometry.
CY200 is described for finishing; CY600 for fine finishing of hardened steels and cast irons. Share your surface finish target and cutting allowance.
A starting point for general machining of hardened steels and cast irons. Include interruption level and machine stability in the review.
For high-speed fine finishing enquiries in hardened steels and cast irons. Confirm setup, parameters and edge preparation before trials.
Identify gray, ductile or alloy cast iron, together with hardness, allowance and interrupted surfaces.
Provide steel designation, hardness and dimensional tolerance. Compare the ceramic and CBN options where appropriate.
Provide the holder code, current insert and edge requirements. Match seat, clamp and specification before ordering.
Confirm the full insert and holder codes, seat geometry, thickness and clamping arrangement. A SNGN family name alone does not establish compatibility.
Start with your material, hardness and operation. Include interruption level, speed, feed, depth of cut and finish requirements. If uncertain, choose “Recommend a grade” in your enquiry.
The specification table is a reference range. Send your model, grade and quantity for supply and lead-time confirmation.
This depends on the grade, edge preparation, workpiece and rigidity. Send details of the interrupted surfaces before deciding.
Send a drawing or sample details with your machining requirements for a feasibility review.
Select your specification and tell us your machining need. Send your enquiry directly to Huamin Tools.