TGK SPECIAL STEEL PVT. LTD. - HANDBOOK

The Name You Can Trust www.tgkssl.com - 47 - 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 (O1) Smelting method: (1) EAF +LF+VD; (2) electric arc furnace +LF+VD+ESR Main characteristics: Favorable thermal treatment deformation resistance, favorable tenacity under high temperature, favorable machining, extremely stable dimension under hardening, as well as extremely high hardness and relatively high tenacity on surfaces. Major applications:  Widely used in cutting, cold pressing and forming tools;  Applicable to cold pressing, line cutting die, outfits and shearing dies. Chemical constituent %: C Si Mn Cr Mo W V P S 1.0 0.25 1.1 0.6 ≤0.3 0.6 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 - 30 - 12.9 14 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 1.0 1.0 1. 1.0 1.5 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 (6.5~120)* (200~810) (6.5~120)* (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 12mm COLD WORK STEEL