TGK SPECIAL STEEL PVT. LTD.

HOT WORKING TOOL STEEL PREMIUM GRADE TGE23 (Similar to DIEVAR) High ductility, high thermal fatigue resistance, high thermal erosion resistance, high isotropic property, high purity and small heat treatment distortion. EAF + LF + VD + ESR + VMR SMELTING METHOD MAIN CHARACTERISTICS  Mainly used for processing of light alloy - metal pipes, rods, extruded carrier rods, molds, and extruded molds, etc. l Pressure casting equipment, molded trimming die, compression moulding inserts, etc .  Hot shearing blades, plastic molds, etc. Equivalent Grade from UDDEHOLM / DIEVAR MAJOR APPLICATIONS CHEMICAL COMPOSITION (%) S 0.001 < C Cr Mn Mo 0.37 V 0.45 P 2.2 5.0 0.4 0.015 < Si 0.3 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 29.7 215,000 12 12.5 O 20 ~ 200 C PHYSICAL PROPERTY ULTRASONIC FLAW DETECTION As per SEP1921: E/e flaw detection or GB/T4162 Class AA flaw detection, i.e., flat bottom hole 1mm, no flaw detection noise wave shall appear or please comply with customer regulation. 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 TGE23 TGE23 TGE23 TGE23 71~810 (120~400) x (300~800) 14.5~70 (12~120) x (200~810) SUPPLY SPECIFICATION Softening annealing Quenching Tempering O Heating to 850 C for heat insulation; O O cooling to 600 C at 10 C/h air cooling O 1020~1040 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 425~550 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)  60~200  201~300  01 380 350 300 350 300 250 24