TGK SPECIAL STEEL PVT. LTD.

TPM 6711 (Equivalent to ASP 2060) TMP6711 is a very high alloyed grade for applications requiring both hot hardness and wear resistance. INTRODUCTION Gear cutting tools, Broaches, Cold work tools, Bearing & other components, Taps, Drills, End mills. APPLICATIONS CHEMICAL COMPOSITION (%) C Co Mo 2.30 W Cr 4.2 7.0 6.5 10.5 V 6.5 PHYSICAL PROPERTY Temperature O 20 C O 400 C O 600 C 3 Density g/cm (1) 2 Modulus of elasticity kN/mm (2) O Thermal expansion ratio per C (2) O Thermal conductivity W/m C (2) O Specific heat J/kg C (2) 7.9 250 -- 24 420 7.9 222 -6 10.6 x 10 28 510 7.8 200 -6 11.1 x 10 27 600 O O (1) = Soft annealed (2) = Hardened 1180 C and tempered 560 C, 3x1 hour O O O  Soft annealing in a protective atmosphere at 850-900 C for 3 hours, followed by slow cooling at 10 C/h down to 700 C, than air O O cooling.  Stress-relieving at 600-700 C for approximately 2 hours, slow cooling down to 500 C.  Hardening in a protective O O atmosphere with pre-heating in 2 steps at 450-500 C and 850-900 C and austenitising at a temperature, suitable for chosen working O O hardness. Cooling down to 40-50 C.  Tempering at 560 C three times for at lease 1 hour each time. Cooling to room temperature O (25 C) between temperings. HEAT TREATMENT POWDER METALLURGY HIGH SPEED STEEL COMPARABLE STEELS TIANGONG TPM6711 EUROPE GERMANY PMHS 7-7-7-11 1.3292 SWEDEN ASP 2060 DELIVERY STATE Delivery is annealed condition, Softening annealing hardness 345HB. Thickness 5mm - 205mm Width 5mm - 810mm 4mm to 100mm Thickness 0.5mm to 12mm Width 810mm Length 2500mm SIZE: FLATS SIZE: SQUARES SIZE: SHEETS SIZE: ROUND 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 18