Sumitomo AC230: the maker lists ACP100 as its successor
Sumitomo Electric puts Sumitomo ACP100 against AC230 in its own catalogue material. We publish the pair only because the maker printed it; the source and page are below.
What the maker's document shows
AC230 → ACP100 · P / steel milling (CVD)
The table has a "Grade" column and an "Old Grades" column. ACP100 is in the Grade column; AC230 is in its Old Grades column.
Source: Sumitomo Electric, General catalogue 2025–2026, coated carbide grade table, printed page A27 (PDF page 27). Open the maker's PDF at that page →
Text line as extracted from the PDF (table columns run together)
ACP100 89.3 3.1 6 AC230
What this does and does not mean
It means the maker positions ACP100 as the newer grade for the work AC230 was used for. It does not say AC230 is discontinued, and it does not say every insert shape and chipbreaker you buy in AC230 exists in ACP100.
Before you switch:
- Check that your exact insert designation and chipbreaker are offered in ACP100 in the maker's current catalogue.
- Start from the maker's recommended cutting speed for ACP100, not the numbers you ran with AC230.
- Run both grades until the edge is worn out on the same part and compare parts per edge. One part is not a result.
Grade lineage in the same document
AC230 → ACP100 → ACP2000. The maker also lists ACP2000 against ACP100, so ACP100 is not the newest step in this line.
Other Sumitomo successor pairs
AC304 → AC630M · AC405K → AC4010K · AC420K → AC4125K · AC610M → AC6020M · AC700G → AC420K · AC8015P → AC8115P · AC810P → AC8015P · AC830P → AC8035P · ACP100 → ACP2000
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.