Kennametal TPU 433 K21 Triangular Carbide Inserts, Grade K21 5pcs

Kennametal TPU433 K21 Carbide Inserts — precision triangular inserts for general-purpose turning and facing applications. Model: TPU433 Grade: K21 Manufacturer: Kennametal Inc. Country of Manufacture: USA Insert Type: Triangular, positive rake, single-sided Insert Dimensions: • Inscribed Circle (IC): 3/8 in (9.525 mm) • Thickness (S): 3/16 in (4.76 mm) • Corner Radius (RE): 3/64 in (1.2 mm) Geometry: 7° relief angle (positive clearance) Material: Fine-grain tungsten carbide Coating: Uncoated (K21 grade base) Grade K21 Characteristics: • Tough micrograin carbide composition for balanced hardness and toughness • Ideal for cast iron, nonferrous alloys, and light steel finishing • Excellent edge retention and thermal stability • Provides smooth surface finish and resistance to built-up edge formation ISO Range: K10–K25 Recommended Cutting Speed: • Cast Iron: 700–1300 SFM (215–395 m/min) • Nonferrous Metals: 900–1800 SFM (275–550 m/min) Feed Rate: 0.002–0.012 in/rev (0.05–0.30 mm/rev) Depth of Cut: Up to 0.080 in (2 mm) typical Mounting: For toolholders accepting TPU geometry (top clamp or screw clamp style) Color: Gray Quantity: 5 inserts per package Applications: • Light to medium turning and facing of cast iron and nonferrous alloys • Finishing and semi-finishing operations in CNC and manual lathes • High-accuracy contour machining Please review pictures carefully and let us know if you have any questions!