Ming Yuan Metal Products (Shanghai) Co., Ltd. Distribution GS-821 tool steel; cold-working die steel; hot die steel; high-speed steel; stainless steel; mold steel Hotline: 57888255; Fax: 57888225; phone: 15221352988; GS-821 Die steel 

 GS-821 (new generation of high-quality high-toughness wear-resistant chromium steel) Origin: Germany 

 Factory state: annealing treatment maximum hardness: 220HB 
 Chemical composition% C C Si Mn Cr Si Mn Cr Mo V 
 1.1 0.9 0.4 8.25 2.15 0.3 
 Steel characteristics: high-carbon high-chromium tool steel, molybdenum, vanadium, gold, and its hardening, the surface has a high hardness, hardening of good, excellent stability, high wear resistance, high compressive strength. 
 Uses: need a good impact toughness, abrasion resistance and appropriate, commonly used in cutting thicker harder materials. 

 ★ heat treatment 
 Soft annealing furnace cooling ℃ 820-860 maximum hardness 220HB 

 ℃ quenching HRC hardness of hardening agent 
 1030-1080 air or hot bath 57-59 (821ESR60-63) 
 Tempering ℃ temperature 200,300,400,500,600 
 HRC hardness 5856575955