TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 97 - 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 (TGS136) Smelting method: EAF+LF+VD+ESR Main characteristics: Extremely high mirroring performance, favorable corrosion resistance, high abrasion resistance and favorable machining performance. Major applications:  Super-mirror plastic molds: molds for optical lens and other transparent plastic pieces;  Corrosion preventive high-resisting molds: Molds for fold vessels, cosmetics vessels, medical devices, light guiding plates, bottle covers, etc.  Formed resin materials: PC, PVC, PP, PE, PF, PMMA, adding fire retardant resin, etc. Chemical constituent %: C Si Mn Cr Mo Ni V P S 0.4 1.05 0.55 13.5 0.3 0.22 0.3 ≤0.03 ≤0.015 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 7.80 465 23 241,000 11.2 11.5 Ultrasonic flaw detection: Flaw detection standard: as per GB/T 6402-2008 Class 4 flaw detection standard 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, ≤255HB. Supply specification: Round steel Flat steel Module Ф 16~50 0mm 16~120mm×200~610mm 120~300mm×300~1,000mm PLASTIC MOULDS