TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 67 - 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 (TGE13) Smelting method: EAF+LF+VD+ESR Main characteristics: Excellent heat resistance and crack resistance, quite high tenacity, quite high ductility, favorable isotropic, favorable processability and polishability as well as favorable dimension stability during heat treatment. Major applications:  For various metal pressure casting molds, for example: automobile engine cylinder body, cylinder cover, gearbox shell molds;  Hot extrusion molds, mainly for hot extrusion of aluminum profiles;  High-quality plastic molds, for example, high abrasion resistance plastic molds for automobiles. Chemical constituent %: Physical property: C Si Mn Cr Mo V P S 0.38 0.90 0.35 5.0 1.35 0.95 ≤0.015 ≤0.002 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 ) Linear expansivity (×10 -6 K) 20~200ºC 20~400ºC 7.80 430 22 215,000 11.3 11.9 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. Purity: Class A Class B Class C Class D Fine Coarse Fine Coarse Fine Coarse Fine Coarse 1.0 0.5 1.5 1.0 1.0 1.0 1.5 1.0 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 criteria in North American Die Casting Association, making sure that hardness of samples at 45±2HRC. Dimension of samples: 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 ～ 300 240 150 ＞ 300 180 100 Supply specification: Product name Specification/mm Material Forged round bar Ф70 ～ 500 TGE13 Forged module (120 ～ 400)× (300~800) TGE13 Rolled round bar Ф16 ～ 70 TGE13 Rolled flat bar (12 ～ 120)× (200~810) TGE13 HOT WORK STEEL