SCMT09T308N-SU AC630M (10pcs) SUMITOMO
SCMT09T304N-SU AC630M (10pcs) SUMITOMO
SCMT120408N-SU AC830P (10pcs) SUMITOMO
SCMT09T308N-SU AC830P (10pcs) SUMITOMO
SCMT09T304N-SU AC830P (10pcs) SUMITOMO
Sumitomo SC / SP 90° Square Positive Inserts
Sumitomo 90° square positive inserts with 7° positive rake provide square-corner geometry ideal for shoulder turning and facing. The 90° point creates square shoulders with no corner-radius compromise.
This catalog covers 5 Sumitomo SC 90° square positive inserts across SCMT geometry (molded chipbreaker). Available in IC 9.525 / 12.7 mm sizes with PVD (AC830P, AC630M) grades for steel and stainless work.
Browse the full sc-sp-90-square Sumitomo catalog, or jump to: About · Featured SKUs · All Categories · Grades · FAQ.
Sumitomo-Original Inserts from Japan
All 5 inserts in this catalog are 100% genuine Sumitomo — manufactured by Sumitomo Electric Industries in Itami, Japan. Each insert is sourced through Sumitomo's authorized distribution channels and ships in original Sumitomo factory packaging with full Sumitomo grade and lot traceability. Sumitomo's premium carbide substrates, CVD/PVD coatings, and edge-preparation processes are specified across the full AC / NC / GC / KW / A-series grade families — providing the consistent performance and reliability that has made Sumitomo a leading Japanese cutting-tool brand.
About SC / SP 90° Square Positive Inserts
Sumitomo 90° square positive inserts with 7° positive rake provide square-corner geometry ideal for shoulder turning and facing. The 90° point creates square shoulders with no corner-radius compromise.
The SC-SP-90-SQUARE family includes sub-designations:
- SCMT — 90° Square Positive w/ Hole + Molded Chipbreaker
Sumitomo Electric Industries (Itami, Japan) is one of the world's leading manufacturers of CNC cutting tools, with over 100 years of carbide expertise. The Sumitomo AC series (CVD/PVD-coated steel), NC series (cermet + stainless), GC series (aluminum + cast iron), and A-series (ceramic) represent decades of grade development.
Featured Sumitomo SC-SP-90-SQUARE Inserts
Twelve representative selections from our 5-SKU Sumitomo SC-SP-90-SQUARE catalog:
SCMT09T308N-SU AC630M (10pcs) SUMITOMO
Standard Sumitomo SC-SP-90-SQUARE insert for general turning.
SCMT09T304N-SU AC630M (10pcs) SUMITOMO
Standard Sumitomo SC-SP-90-SQUARE insert for general turning.
SCMT120408N-SU AC830P (10pcs) SUMITOMO
Standard Sumitomo SC-SP-90-SQUARE insert for general turning.
SCMT09T308N-SU AC830P (10pcs) SUMITOMO
Standard Sumitomo SC-SP-90-SQUARE insert for general turning.
SCMT09T304N-SU AC830P (10pcs) SUMITOMO
Standard Sumitomo SC-SP-90-SQUARE insert for general turning.
View All 5 Sumitomo SC-SP-90-SQUARE Inserts →
All Categories — Organized by Sub-Designation & IC Size
This catalog spans 1 sub-designation with 5 total SKUs. Each sub-designation is engineered for a specific application range:
SCMT — 90° Square Positive w/ Hole + Molded Chipbreaker (5 SKUs)
Standard 90° square positive for general turning on steel and stainless.
- IC 12.7 mm — 1 SKU with grades AC830P
- IC 9.525 mm — 4 SKUs with grades AC630M, AC830P
Sumitomo Grade Family Reference
2 grade families cover the full ISO application range:
| Sumitomo Grade | Type | ISO | Best For |
|---|---|---|---|
| AC830P | PVD | P10-P30 / M10-M30 | Steel + stainless |
| AC630M | PVD | P15-P30 / M15-M30 | Stainless premium |
How to Choose the Right Sumitomo SC-SP-90-SQUARE Insert
Selecting the correct Sumitomo SC-SP-90-SQUARE insert involves three decisions:
- Material → Grade: Steel → AC6020M / AC6030M. Stainless → NC5330 / NC5340. Cast iron → NC40 series. Aluminum → GC3040 / KW10.
- Sub-designation → Operation: General turning → SCMT. Finishing → SCMT. Heavy roughing → thicker section.
- IC size → Tool holder: Smaller IC fits compact holders. Larger IC for heavy-duty work.
Tip: For stainless steel work, Sumitomo NC5330 / NC5340 (CVD M-grade) provide superior wear resistance. For aluminum, use uncoated GC3040 or KW10 with sharp-edge geometry.
Frequently Asked Questions
Are these genuine Sumitomo original inserts?
Yes — all 5 products in this catalog are 100% genuine Sumitomo originals manufactured by Sumitomo Electric Industries in Itami, Japan. Each insert ships in original Sumitomo factory packaging with full traceability.
What is the difference between the SC-SP-90-SQUARE sub-designations?
The SC-SP-90-SQUARE family includes sub-designations like SCMT. Each sub-designation has a specific tolerance class, edge preparation, and intended use. M-class (middle) is the workhorse for general turning; G-class (ground) is precision-sharp for finishing; the heavier variants are for roughing.
What grade should I choose for stainless steel?
For stainless steel work, Sumitomo recommends NC5330 (CVD M-grade) for general work and NC2020 (cermet) for finishing. NC5340 is the premium choice for heavy roughing on tough stainless.
What tool holder do I need for SC-SP-90-SQUARE inserts?
Sumitomo SC-SP-90-SQUARE positive-rake (7° positive rake) inserts fit standard tool holders. Browse our turning tool holder catalog for compatible options.
How does Sumitomo compare to Sandvik / Kyocera?
Sumitomo's AC-series PVD/CVD-coated inserts are direct competitors to Sandvik GC4325 and Kyocera PR1535 in steel. The NC-series cermet and CVD grades match Kyocera TN60 and Sandvik GC1525. Sumitomo's GC-series aluminum grades are highly regarded for non-ferrous work.
Need Help Selecting the Right Sumitomo SC-SP-90-SQUARE Insert?
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Sumitomo Master Catalog
Full Sumitomo carbide insert lineup across all geometries and grades.
Sumitomo SC-SP-90-SQUARE — Current
This collection with all 5 SKUs.
Sumitomo, AC, NC, GC, KW, A-series are trademarks and grade designations of Sumitomo Electric Industries, Ltd. (Itami, Japan). Distributed by cnchome-beyond.com — Super Industrial Trading Co., Ltd, Hangzhou, China.