Carbide grade · Tungaloy · ISO M20 and S20
Tungaloy AH630
AH630 is a Tungaloy carbide turning insert grade placed at the ISO M20 and S20 application position (stainless steel) in manufacturer-published grade comparison charts. The charts list 25 comparable grades from 9 brands at the same position. Sharing an ISO position is a chart placement, not a claim the grades are interchangeable — verify on a sample part before switching.
Verified cross-brand equivalents for Tungaloy AH630, with the manufacturer charts behind each match: Tungaloy AH630 equivalents.
Grade summary — Tungaloy AH630
| Brand | Tungaloy |
|---|---|
| ISO application position | M20 and S20 — stainless steel |
| Coating / substrate | Not verified in the reference charts |
| Placement verification | Confirmed by 2+ manufacturer-published charts |
| Chart sources | Ingersoll turning grade cross-reference (live-fetched 2026-07-14), TaeguTec grade comparison table, Tungaloy grade comparison chart, Mitsubishi Materials grades comparison table, Reliable Industrial Supply chart |
Comparable grades at ISO M20 — per published comparison charts
| Brand | Grade | ISO position | Chart verification |
|---|---|---|---|
| ISCAR | IC6025 | ISO M20 | confirmed by 2+ manufacturer charts |
| Kennametal | KCM25B | ISO M20 | confirmed by 2+ manufacturer charts |
| Walter | WSM20S | ISO M20 | confirmed by 2+ manufacturer charts |
| Korloy | NC9125 | ISO M20 | confirmed by 2+ manufacturer charts |
| Seco | CP500 | ISO M20 | confirmed by 2+ manufacturer charts |
| Ceratizit | CTC1425 | ISO M20 | single chart |
| Ceratizit | CTCM120 | ISO M20 | single chart |
| Ceratizit | CTCM130 | ISO M20 | single chart |
| ISCAR | IC9300 | ISO M20 | single chart |
| Korloy | NC9025 | ISO M20 | single chart |
| Tungaloy | AH6225 | ISO M20 | single chart |
| Tungaloy | T6020 | ISO M20 | single chart |
| Walter | WAM20 | ISO M20 | single chart |
Comparable grades at ISO S20 — per published comparison charts
| Brand | Grade | ISO position | Chart verification |
|---|---|---|---|
| Korloy | PC5300 | ISO S20 | confirmed by 2+ manufacturer charts |
| Mitsubishi | MP9025 | ISO S20 | confirmed by 2+ manufacturer charts |
| Seco | CP500 | ISO S20 | confirmed by 2+ manufacturer charts |
| Tungaloy | AH645 | ISO S20 | confirmed by 2+ manufacturer charts |
| Tungaloy | AH725 | ISO S20 | confirmed by 2+ manufacturer charts |
| Walter | WSM20S | ISO S20 | confirmed by 2+ manufacturer charts |
| Walter | WSM30S | ISO S20 | confirmed by 2+ manufacturer charts |
| Ceratizit | CTPM125 | ISO S20 | single chart |
| ISCAR | IC1008 | ISO S20 | single chart |
| Korloy | PC5400 | ISO S20 | single chart |
| Korloy | PC9530 | ISO S20 | single chart |
| TaeguTec | TT9020 | ISO S20 | single chart |
12 of the 25 placements are confirmed by two or more manufacturer charts. None of this is a metallurgical equivalence claim: chipbreaker geometry, coating and edge preparation differ between brands. The safe path is always a sample-part test.
Tungaloy AH630 plus up to two grades you run next to it, worked through in one document: every cross-brand match with the number of manufacturer charts behind it, single-source candidates kept apart, where your grades overlap so the list can be shortened, and a validation plan. Emailed to you, usually within the hour. No account needed.
Ask the AI advisor about AH630
Cutting data for your material, when AH630 is the right call versus its chart-listed alternatives, and what to check before switching — answered with verified reference data plus live search.
Frequently asked questions
What is Tungaloy AH630?
AH630 is a Tungaloy carbide turning insert grade. Manufacturer-published grade comparison charts place it at the ISO M20 and S20 application position (stainless steel). Coating and substrate details are not verified in the reference charts.
Which grades are comparable to Tungaloy AH630?
Published comparison charts list 25 grades from 9 brands at the same ISO position, including ISCAR IC6025, Kennametal KCM25B, Walter WSM20S, Korloy NC9125. Sharing an ISO position is a chart placement, not a claim of interchangeability - verify on a sample part before switching.
Is a comparable grade a drop-in replacement for AH630?
No. The charts confirm the application position only. Chipbreaker geometry, coating and edge preparation differ between brands, so always test the alternative on a sample part and compare tool life before committing production.
Does this cross-reference favour specific brands?
No. Comparable grades appear here only because manufacturer-published comparison charts place them at the same ISO application position. No manufacturer pays for placement, nothing on this page is sponsored, and CuttingToolsAI sells no tools and earns no commission. Placements backed by a single chart are flagged as such, and every comparison ends the same way: verify on a sample part before switching.
Grade charts by brand
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Related grades
Where AH630 is used: designations and materials