{"id":10730,"date":"2026-10-14T07:26:30","date_gmt":"2026-10-14T07:26:30","guid":{"rendered":"https:\/\/ychltools.com\/resources\/heat-resistant-alloy-turning-inserts\/"},"modified":"2026-10-14T07:59:37","modified_gmt":"2026-10-14T07:59:37","slug":"heat-resistant-alloy-turning-inserts","status":"publish","type":"page","link":"https:\/\/ychltools.com\/zh\/resources\/heat-resistant-alloy-turning-inserts\/","title":{"rendered":"\u8f66\u524a\u5200\u7247 for Inconel and Heat-Resistant Alloys (ISO S)"},"content":{"rendered":"

Nickel-based superalloys (Inconel 718, 625, Waspaloy, Hastelloy) and titanium alloys are grouped as ISO S<\/strong>. They share one defining property: they keep their strength at cutting temperature<\/strong>. In steel, the chip softens as it forms and carries the heat away. In a superalloy it does not, so the heat and the mechanical load both stay at the cutting edge.<\/p>\n

Real cutting data for ISO S<\/h2>\n

Aggregated from 1046 insert records published for heat-resistant alloys in our catalogue:<\/p>\n

\n\n\n\n\n\n\n\n
Parameter<\/th>\nFull published range<\/th>\nTypical (median)<\/th>\n<\/tr>\n<\/thead>\n
Cutting speed vc<\/td>\n20 \u2013 200 m\/min<\/td>\n30 \u2013 90 m\/min<\/strong><\/td>\n<\/tr>\n
Feed fn<\/td>\n0.02 \u2013 1.20 mm\/rev<\/td>\n0.10 \u2013 0.30 mm\/rev<\/strong><\/td>\n<\/tr>\n
Depth of cut ap<\/td>\n0.15 \u2013 10.30 mm<\/td>\n0.6 \u2013 3.2 mm<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Inconel 718 typically runs at 30\u201360 m\/min with carbide. Titanium Ti-6Al-4V is usually 40\u201390 m\/min. Those numbers feel slow, and they are \u2014 but raising them shortens tool life dramatically and non-linearly.<\/p>\n

\u724c\u53f7s that work<\/h2>\n

Our most-stocked S-group grades: AC200M, AC100M, AP200U, AP301M, AP403M, AP351U, AP100S, AP351M, AP403S, AP010S<\/strong>.<\/p>\n

These are tough, PVD-coated, fine-grain<\/strong> substrates. The coating must be thin so the edge stays sharp and resists chipping; a thick CVD coating will fracture under the mechanical load long before it gets a chance to wear.<\/p>\n

The rules<\/h2>\n

1. Constant feed \u2014 never let the tool rub<\/h3>\n

Rubbing work-hardens the surface instantly and destroys the edge on the next pass. Use lead-in arcs, never dwell, and avoid spring passes. If you must dwell, retract instead.<\/p>\n

2. Keep ap above the work-hardened layer<\/h3>\n

Same rule as stainless, more severe. Minimum ap around 0.2 mm, and vary it between passes so notch wear does not concentrate at one line.<\/p>\n

3. Positive geometry and a sharp edge<\/h3>\n

Positive rake reduces force, heat and work-hardening. Reserve negative \u5200\u7247 for the roughest operations on rigid setups.<\/p>\n

4. Expect notch wear<\/h3>\n

Notch wear at the depth-of-cut line is the normal failure mode in superalloys, not an anomaly. Plan insert indexing around it; the way to slow it is varying ap and using a tougher grade.<\/p>\n

5. Use coolant \u2014 high pressure<\/h3>\n

Unlike hard turning, superalloys benefit strongly from coolant, and high-pressure coolant delivered accurately to the edge can significantly extend life. It also helps break the chips, which in Inconel are tough and stringy.<\/p>\n

Titanium is a separate case<\/h2>\n

Titanium has low thermal conductivity and is chemically reactive with many tool materials at temperature. The rules overlap with Inconel but:<\/p>\n