TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 71 - Descriptions and data in the file are typical cases. We will not make guarantee for them. Besides, we reserve the final right to interpret improvement in materials, quality and/or performance. Steel grade (TGGP13) Smelting method: EAF+LF+VD+ESR Main characteristics: High ductility, high thermal fatigue resistance, high thermal erosion resistance, high isotropic property, high purity and small heat treatment distortion . Major applications: gear molds of gear boxes. Chemical constituent %  Long-life Al, Mg and Zn alloy pressure casting molds, for example: automobile engine cylinder body, cylinder cover, gearbox shell molds.  Large-scale hot extrusion molds: for example, aluminum alloy hot extrusion molds for high-speed rails and metros.  Precise hot forging molds: for example, automobile engine crankshaft and connecting rod molds; Physical property: C Si Mn Cr Mo V P S 0.39 1.1 0.4 5.3 1.45 1.0 ≤0.009 ≤0.001 Ultrasonic flaw detection: As per SEP1921: E/e flaw detection or GB/T4162 Class AA flaw detection, i.e., flat bottom hole ≤Φ 1mm, no flaw detection noise wave shall appear or please comply with customer regulations. Room temperature density (Kg/m 3 ) Specific heat of room temperature (J/Kg·K) 200ºC thermal conductivity (W/m•K) Elastic modulus (N/mm 2 ) 20~200ºC 20~400ºC Linear expansivity (×10 K) 7.80 430 22 215000 11.3 11.9 Purity: Delivery state: (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 criterions in North American Die Casting Association, making sure that hardness of samples at 45±2HRC. Dimension of samples: 7*10*55. Gapless. Class A Class B Class C Class D Fine Coarse Fine Coarse Fine Coarse Fine Coarse 0.5 0. 1.0 0.5 0.5 0 1.0 0.5 Supply specification: 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 ～ 300 300 250 ＞ 300 300 200 Product name Specification/mm Material Forged round bar Ф70 ～ 500 TGGP13 Forged module (120 ～ 400)× (300~800) TGGP13 Rolled round bar Ф16 ～ 70 TGGP13 Rolled flat bar (12 ～ 120)× (200~810) TGGP13 HOT WORK STEEL