TGK SPECIAL STEEL PVT. LTD.

HOT WORKING TOOL STEEL TG H-21 (DIN-1.2581) The H21 tungsten hot-work tool steels are mainly used for hot-working dies and toolings, e.g., die casting, extrusion and hot-forming of parts. APPLICATIONS Hot work steel with good toughness include tungsten Chromium Carbon Vanadium usually is working hardness is 40.0 to 55.0 HRC size available in round, flat and square. STEEL PROPERTIES Thickness 5mm - 410mm Width 10mm - 810mm SIZE: HOT ROLLED / FORGED FLAT BARS UT STANDARD : AISI H21 AFNOR 32CDV 21-28 DELIVERY STATUS : In Annealed Condition REDUCTION RATIO : As 1:4 or 1:5 PRODUCTION PROCESS Forged Annealed & Turned Hot Rolled & Annealed Peeled (HRAP) Cold Drawn / Centreless Ground : 81.0 - 810mm : 14.5 - 80.0mm : 2.0 - 14.4mm EAF LF VD ESR (5TONS HAMMER) ANNEALED CONDITION ROUND BAR: FLAT BAR: EAF LF VD ESR FORGED HOT ROLLED (850) ANNEALED CONDITION Forged + Annealed + Turned Bar 81.0 - 810.0mm Hot Rolled Annealed & Peeled Bard 14.5 - 80.0mm 2.0 - 14.4mm SIZE: ROUND Cold Drawn/Ground Bar HEAT TREATMENT CONDITION O Soft annealing C O Hardening C Quenching O : 780 - 800 C O : max. 240 C O : Air, Oill or Warmbath, 600-650 C 0 Tempering C HRC 0 100 C 491HRC 0 200 C 49HRC 0 300 C 49HRC 0 400 C 0 500 C 0 550 C 0 600 C 0 650 C 0 700 C 49HRC 51HRC 51HRC 50HRC 46HRC 36HRC Indian IS H21 Chemical Analysis Typical Value % (Min - Max) Delivery Condition C S P Si Mn Ni Cr Mo V W other Heat Treatment Hardness 0.26- 0.36 0.15- 0.50 0.15- 0.40 *** 3.00- 3.75 0.30- 0.60 *** Annealed HB240 < CHEMICAL COMPOSITION (%) *** *** *** 9.0- 9.50 29