TGK SPECIAL STEEL PVT. LTD.

TPM 330 (Equivalent to ASP 2023) The main characteristics of this steel are fine carbide particles, uniform distribution and good toughness. Main application: cold working parts, rollers, extrusion dies, and high-performance cutting tools. INTRODUCTION CHEMICAL COMPOSITION (%) C W Mo 1.28 V Cr 4.10 5.00 3.00 6.40 COMPARABLE STEELS TIANGONG TPM330 US STANDARD ERASTEEL BOHLER M3-2 APS2023 S790 DELIVERY STATUS Delivery is annealed condition, softening annealing hardness 260HB. MICROSTRUCTURE AS POWDERED (1) The carbides are small and uniformly distributed. The size of carbides 5um (the average size of 3 large carbides in 10 fields of view at 1000X). (2) The unevenness of eutectic carbide is not more than level 1. ULTRASONIC FLOW DETECTION Flaw detection standard: according to SEP1921-E/e level of flaw detection and GB/T6402-2008 level 4 of assessment or upon customer-specific requirements. CHEMICAL CLEANLINENESS A THIN B C D THICK THICK THIN THIN THICK THICK THIN 0.5 0.5 1.5 1.0 1.5 1.0 1.5 1.0 SOFT ANNEALING: O O O O Heating to 860 C~900 C for 3~5h in a protective atmosphere, followed by cooling down to 500 C at 10 C/h, and then air-cooling out of the furnace. STRESS RELIEF ANNEALING: O O Heating to 750 C~800 C for 2h, then air-cooling out of the furnace. MICROSTRUCTURE AS ANNEALED This third-generation powdered high speed steel is made by hot isostatic pressing of the nitrogen gas atomized powders followed by forging and heat treatment. Eutectic Carbide Unevenness: 0.5 (TPM330, 205x305mm) Large Carbide Size: 4.9um (TPM330, 205x305mm) Quench-Temper Curve SIZE: ROUND Thickness 5mm - 205mm Width 5mm - 810mm 4mm to 100mm Thickness 0.5mm to 12mm Width 810mm Length 2500mm SIZE: FLATS SIZE: SQUARES SIZE: SHEETS Cold Drawn/Centreless Ground Bar Coil 1.0 - 13.5mm Forged & Turned bar 81.0 - 255.0mm Hot Rolled Peeled & Polish Bar 14.5 - 80.0mm 1.0 - 14.4mm POWDER METALLURGY HIGH SPEED STEEL 15