What is the successor to Iscar IC520?

ISCAR lists IC948 against IC520 in its own documents (ISO P/M, BTA deep-hole drilling inserts (PVD)). The maker answers per insert item, so check your own insert number in its source; check that your insert designation is offered in IC948 and start from the maker's cutting data for the new grade.

Advisor / Grades / Successors / IC520

Grade successor · Iscar · ISO P/M, BTA deep-hole drilling inserts (PVD)

Iscar IC520: the maker lists IC948 as its successor

ISCAR puts Iscar IC948 against IC520 in its own catalogue material. We publish the pair only because the maker published it; the source is below.

What the maker's document shows

IC520 → IC948 · ISO P/M, BTA deep-hole drilling inserts (PVD)

The announcement states: IC948 will replace phased-out grades IC520 and IC920.

Source: ISCAR, New Product Announcement 35-2022 (November 2022), page 4. Open the maker's source → Text read from an archived copy of this iscar.com PDF.

ISCAR calls the old grades phased out in this announcement, which covers its BTA deep-hole drilling inserts.

What this does and does not mean

The maker marks the old IC520 items it lists as discontinued, phased out or obsolete and names items in IC948 as their replacement. That record is per insert: your exact IC520 insert may point to a different grade or have no successor.

Before you switch:

Check that your exact insert designation and chipbreaker are offered in IC948 in the maker's current catalogue.
Start from the maker's recommended cutting speed for IC948, not the numbers you ran with IC520.
Run both grades until the edge is worn out on the same part and compare parts per edge. One part is not a result.

Other Iscar successor pairs

IC5500 → IC8355 · IC848 → IC9015 · IC9025 → IC8355 · IC920 → IC948

Moving off IC520?

Tell the advisor your insert, material and operation. It answers brand-neutral, including options from other makers. To check a whole tool list for older grades, use the free coverage check.