TGK SPECIAL STEEL PVT. LTD.

HOT WORKING TOOL STEEL 1.2367 SUP THERMAL TREATMENT Softening annealing Quenching Tempering O Heating to 820~840 C for heat insulation; O O cooling 600 C at 10 C/h for air cooling O 1030~1060 C high-speed gas quenching or hot oil cooling Selecting tempering temperature according to hardness requirements; O please conduct tempering for 3 times; prevent tempering under 450-550 C High heat resistance, favorable high-termperature tenacity, high thermal fatigue resistance and abrasion performance, little change in heat treatment size, nitridation treatment, favorable polishability and favorable isotropic. 1) EAF + LF + VD + ESR SMELTING METHOD MAIN CHARACTERISTICS O 20 ~ 400 C Room temperature 3 density (Kg/m ) 7.83 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) *** 25.0 215.000 12 12.5 O 20 ~ 200 C PHYSICAL PROPERTY ULTRASONIC FLAW DETECTION Flaw detection standard: as per Class A of GB/T4162, i.e. flat bottom hole 2mm, or as per customer requirements. Φ MAJOR APPLICATIONS  Long-life pressure casting  Forged molds and inserts  Hot extrusion molds CHEMICAL COMPOSITION (%) C Mo Mn P W 0.37 V 0.55 S *** 2.0 0.45 0.015 Si 0.4 Cr 5.0 0.001 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 DELIVERY STATE 1) Delivery hardness: delivery under annealing state, delivery hardness 229HB; 2) Organization state and impact power requirement: 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 criterions in North American Die Casting Association, making sure that hardness of samples at 45 ± 2HRC. Dimension of sample: 7x10x55 Gapless. Specification (diameter, thickness mm) Average impact power at the centre part not less than (J) Minimum impact power per sample not less than (J) > 60 ~ 300 > 300 300 280 250 220 SUPPLY SPECIFICATION PRODUCT NAME SUPPLY SPECIFICATION OF ELECTRIC FURNACE STEEL/mm 70 ~ 500mm SUPPLY SPECIFICATION OF ELECTROSLAG STEEL/mm Forged Round Bar Forged Module Rolled Round Bar Rolled Flat Bar 16 ~ 70 (120~400) x (300~800) (12~120) x (200~810) 1.2356 SUP 1.2356 SUP 1.2356 SUP 1.2356 SUP 27