TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 81 - 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 (TGGP11) Smelting method: EAF+LF+VD+ESR Main characteristics: Excellent tenacity and ductibility along all direction; high thermal fatigue resistance, favorable polishability, favorable dimension stability and favorable quenching. Major applications:  Pressure casting molds;  Hot extrusion molds of aluminum, copper and magnesium ally;  High-polishing plastic injection molds. Chemical constituent % C Si Mn Cr Mo V P S 0.37 1.0 0.37 5.2 1.3 0.45 ≤0.009 ≤0.001 Physical property: 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 7.85 460 29.2 215,000 13.4 13.2 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 ≤Φ 2mm or as per customer requirements. 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: 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. 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 ～ 250 250 200 ＞ 250 220 180 Supply specification: Product name Specification/mm Material Forged round bar Ф70 -500 TGGP11 Forged module (120-400)* (300-1,000) TGGP11 Rolled round bar Ф16 -70 TGGP11 Rolled flat bar (12-120)* (200-810) TGGP11 HOT WORK STEEL