TGK SPECIAL STEEL PVT. LTD.

COLD WORKING TOOL STEEL TG D2 (DIN-1.2379)  Thread rolling rolls and thread rolling dies, cold extrusion tools, cutting and stamping tools for sheet thicknesses up to 6mm, precision cutting tools up to 12 mm. Cold pilger mandrels, circular-shear blades, deep-drawing tools. pressure pads and highly resistant plastic moulds.  E.S.R. materials, high compression strength and fine robustness. The spheroical annealed make it easily processed by shearing and cutting with no crake while processing.  Applied in thickness no less than 2mm punch mould, all kind of small mould for shearing and cutter together with screw rolled or slappered mould as well as some other forming mould like rulers. APPLICATIONS : 12% ledeburitic chromium steel. Maximum wear resistance, good toughness. Best cutting-edge endurance and resistance to tempering, can be nitrided after special heat treatment STEEL PROPERTIES SIMILAR STEEL GRADE BRAZIL VILLARES VD2 AUSTRIA BOHLER K110 GERMANY DEW 1.2379 SLOVANIA RAVNE OCR12VM ITALY LUCCHINI DUYOS2379 GRODITZ 1.2379 HITACHI SLD JAPAN NIPPON KD11V SANYO QCD2 S.KORIA DOOSAN STD 11 CHINA TG D2 Indian IS Chemical Analysis Typical Value % (Min - Max) Delivery Condition C S P Si Mn Ni Cr Mo V W other Heat Treatment Hardness 1.45- 1.60 0.10- 0.60 0.20- 0.60 *** 11.0- 13.0 0.70- 1.00 0.70- 1.00 *** *** Annealed 0.02 < 0.03 < HB255 < CHEMICAL COMPOSITION (%) D2 (1.2379) PRODUCTION PROCESS EAF LF VD ESR BLOOM FORGED (5tons Hammer) Forged Annealed & Turned Hot Rolled & Annealed Peeled (HRAP) Cold Drawn / Centreless Ground : 81.0 - 1000mm : 14.5 - 80.0mm : 2.0 - 14.4mm ANNEALED CONDITION ROUND BAR: UT STANDARD: SEP 1921, (DEC.84)E/e DELIVERY STATUS: As Hot rolled & forged, delivery condition : Annealed REDUCTION RATIO: As 1:4 or 1:5 FLAT BAR: EAF LF VD HOT ROLLED (850) ANNEALED CONDITION FORGED (5TONS HAMMER) HOT ROLLED (910) Forged + Annealed + Turned Bar 81.0 - 1000mm Hot Rolled Annealed & Peeled Bard 14.5 - 80.0mm 2.0 - 14.4mm SIZE: ROUND Cold Drawn/Ground Bar Thickness 5mm - 150mm Width 5mm - 810mm SIZE: FLATS Thickness 5mm - 12mm Width 810mm - 2500mm SIZE: SHEETS Softening annealing Quenching Tempering O Heating to 830~860 C for heat insulation and cooling slowly O 1020~1040 C quenching; oil cooling or air cooling O 150~250 C, twice tempering (Underlining tenacity) O 500~530 C, twice tempering (Underlining hardness) THERMAL TREATMENT 31