TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 85 - 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 (1.2367 SUP) Smelting method: EAF+LF+VD+ESR Main characteristics: High heat resistance, favorable high-temperature tenacity, high thermal fatigue resistance and abrasion performance, little change in heat treatment size, nitridation treatment, favorable polishability and favorable isotropic. Major applications:  Long-life pressure casting molds;  Forged molds and inserts;  Hot extrusion molds. Chemical constituent %: C Si Mn Cr Mo V P S 0.37 0.4 0.45 5.0 2.8 0.55 ≤0.015 ≤0.001 Physical property: Room temperature density (Kg/m3) Specific heat of room temperature (J/Kg·K) 200ºC thermal conductivity (W/m•K) Elastic modulus (N/mm2) Linear expansivity (×10 -6 K) 20~200ºC 20~400ºC 7.83 - 25.0 215,000 12 12.5 Ultrasonic flaw detection: Flaw detection standard: as per Class A of GB/T4162, 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 ～ 300 300 250 ＞ 300 280 220 Supply specification: Product name Specification/mm Material Forged round bar Ф70~5 00 1.2367 SUP Forged module (120~400)* (300~800) 1.2367 SUP Rolled round bar Ф16~7 0 1.2367 SUP Rolled flat bar (12~120)* (200~810) 1.2367 SUP HOT WORK STEEL