TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 17 - 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 (TGM35A) Smelting method: 15T intermediate frequency furnace +LF+VD+ESR Main characteristics: Favorable tenacity, high red hardness and excellent abrasion resistance. Major applications:  Suitable for fabricating various abrasion-resistant and impact-resistant tools for powerful cutting, high-level trimming dies, screw dies, tools of complicated shapes requiring tenacity, reamers, milling cutters, punches, etc.  Mainly used as roller cutters, drawing tools, end mills, etc. Chemical constituent %: C Mo Cr V Co P S 0.91 6.0 4.8 4.0 1.92 4.85 ＜ 0.022 ＜ 0.003 O (ppm) N (ppm) H (ppm) ≤20 ≤100 ≤2 Physical property: Room temperature density (g/cm 3 ) Specific heat of room temperature (J/g.K) 20ºC thermal conductivity (W/m•K) Elastic modulus (N/mm 2 ) Resistivity [Ohm mm 2 /m] 8.1 0.46 19.0 217,000 0.60 Ultrasonic flaw detection: As per SEP1921 D/d or customer requirements. Purity: Class A Class B Class C Class D Fine Coarse Fine Coarse Fine Coarse Fine Coarse 0.5 0.5 0.5 0.5 0.5 0.5 1.0 0.5 Delivery state: (1) Delivery under balling annealing state, delivery hardness ≤269HB. PRODUCTION PROCESS: EAF LF VD ESR BLOOM IN FOLLOWING MACHINE : QUICK FORGING (12.5MN), HAMMER, PRECISION FORGING Precision Forging Hot Rolled & Annealed Peeled Cold Drawn / Sand Blasted (Coil) Cold Draw / Centreless Ground : 81-255mm : 14.5-80.0mm : 2.0-13.5mm : 2.0 -14.4mm SIZE : Rounds Cold Drawn/Centreless Ground Bar 2.0 - 14.4mm 14.5-80.0mm Forged Bar & Turned Hot Rolled Annealed Peeled Coil 81.0-255.0mm 2.0 - 13.5mm SIZE : Flats Thickness 5mm-150mm Width 5mm-810mm SIZE : Sheets Thickness 0.5mm to 12mm Width 810mm Length 2500mm SIZE : Square 4mm to 100mm