TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 49 - 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 (O2) Smelting method: (1) EAF+LF+VD; (2) electric arc furnace +LF+VD+ESR Main characteristics: Extremely high dimension stability during heat treatment, quite high crack resistance, high machining performance and medium abrasion performance. Major applications:  Mainly used for production of measuring implements;  Used for producing woodworking tools and cutting blades;  Mainly used for producing cutting tools, cold shearing blades, screw cutting tools, etc. Chemical constituent %: C Si Mn Cr Mo W V P S 0. 0 25 2.0 0.35 - - 0.1 ≤0.030 ≤0.010 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 30 210,000 13.3 14.3 Ultrasonic flaw detection: Electric furnace steel: flaw detection standard: as per SEP1921- D/d flaw detection or GB/T6402-2008 Class 3, or as per customer requirements. Electroslag steel: flaw detection standard: as per SEP1921- E/e flaw detection or GB/T6402-2008 Class 4, or as per customer requirements. Purity: Electric furnace steel: Class A Class B Class C Class D Fine Coarse Fine Coarse Fine Coarse Fine Coarse 1.5 1.0 2.0 1.5 1.5 1.0 1.5 1.5 Electroslag steel: 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. 1.0 Delivery state: (1) delivery under annealing state, delivery hardness ≤220HB; (2) Pearlite organization shall be evaluated as Class 1~5 as per standard drawing A.3 in GB/T1299-2014. Supply specification: Product name Supply specification of electric furnace steel/mm Supply specification of electroslag steel/mm Forged round bar Ф70~3 00 Ф70~3 00 Rolled round bar Ф16~7 0 Ф16~7 0 Rolled flat bar (12~70)* (200~610) (12~120)* (200~810) Small flat steel Small flat steel of various specifications with thickness under 30mm and width of 150mm Sheet metal Sheet metal with thickness under 10mm COLD WORK STEEL