TGK SPECIAL STEEL PVT. LTD.

HOT WORKING TOOL STEEL 26 PREMIUM GRADE TGGP11 (Similar to VIDAR SUPERIOR) Excellent tenacity and ductibility along all direction; high thermal fatige resistance, favorable polishability, favorable dimension stability and favorable quenching. EAF + LF + VD + ESR + VMR SMELTING METHOD MAIN CHARACTERISTICS  Pressure casting molds.  Hot extrusion molds of aluminium, copper and magnesium alloy .  High-polishing plastic injection molds. MAJOR APPLICATIONS CHEMICAL COMPOSITION (%) S 0.001 < C Cr Mn Mo 0.37 V 0.45 P 1.3 5.2 0.37 0.009 < Si 1.0 O 20 ~ 400 C Room temperature 3 density (Kg/m ) 7.85 Specific heat of room temperature (J/Kg.K) O 200 C thermal l conductivity (W/mK) Elastic mouldus 2 (N/mm ) -6 Linear expansivity (x10 K) 460 29.2 215,000 13.4 13.2 O 20 ~ 200 C PHYSICAL PROPERTY Coarse 1.0 Class A 1.0 0.5 Class B Class C Class D Fine Coarse Fine Coarse Fine Coarse Fine 1.5 1.0 1.0 1.0 1.5 PURITY Product Name Specification/mm Material Forged round bar Forged module Rolled round bar Rolled flat bar TGGP11 TGGP11 TGGP11 TGGP11 71~500 (120~400) x (300~1000) 16~70 (12~120) x (200~810) SUPPLY SPECIFICATION Softening annealing Quenching Tempering O Heating to 850 C for heat insulation; O O cooling to 650 C at 10 C/h air cooling O 980~1,000 C quenching; high-speed gas quenching or hot oil cooling Selecting tempering temperature according to hardness requirements; please conduct tempering O for 3 times; prevent tempering under 450~550 C THERMAL TREATMENT < DELIVERY STATUS (1) Delivery hardness: delivery under annealing state, delivery hardness 229HB; (2) Organization state and impact power requirement: the organization and segregation shall comply with North American Die Casting Association No. 207 criterion; (3) Impact power sample: please sample according to the central part of steel. The samples shall be treated according to criteria in North American Die Casting Association, making sure that hardness of samples at 45±2HRC. Dimension of sample: 7*10*55. Gapless. Specification (diameter, thickness mm) Average impact power at the center part not less than (J) Minimum impact power per sample not less than (J)  60~250  250 250 220 200 180 ULTRASONIC FLAW DETECTION Flaw detection standard: as per SEP1921: E/e flaw detection or class 4 criterion in GB/T6402-2008, i.e., flat bottom hole 2mm or as per customer requirements. Hardness (HRC) Austenite temperature: O 1,000 C, heat insulation for 30min Quenching temperature and hardness relation curve Tempering temperature and hardness relation curve