1.3343 tool steel 
 Details: 

 Features and application: 

 Tungsten molybdenum high speed steel on behalf of common steel. The steel has a carbide fine uniform, high toughness, thermoplastic and good. It contains a variety of alloying elements of high-alloy steel, steel is ledeburite species. With high hardness, high wear resistance, high fever rigid, high hardenability and adequate ductility and toughness, and good casting, forging, welding and machining performance, which it occupies in the tool steel and important position in 

 Chemical composition%: 
 Carbon C: 0.80 ~ 0.90 (tolerance: ± 0.01) 

 Si Si: 0.20 ~ 0.45 (tolerance: ± 0.05) 

 Manganese Mn: 0.15 ~ 0.40 (tolerance: +0.04) 

 S S: ≤ 0.030 

 Phosphorus P: ≤ 0.030 

 Chromium Cr: 3.80 ~ 4.40 (tolerance: ± 0.05) 

 Ni: to allow the residual content of ≤ 0.30 

 Copper Cu: ≤ 0.25 to allow the residual content 

 Vanadium V: 1.75 ~ 2.20 (tolerance: ± 0.05) 

 Mo Mo: 4.50 ~ 5.50 (tolerance: size ≤ 6, ± 0.05; size> 6, ± 0.10) 

 Tungsten W: 5.50 ~ 6.75 (tolerance: size ≤ 10, ± 0.10; size> 10, ± 0.20) 

 Note: According to the agreement between, V content can be 1.60 ~ 2.20 

 Delivery status tempering steel hardness and hardness of the sample solution: delivery less than or equal hardness HBW (other processing method: 262, annealing: 255); 
 Preheat temperature: 730 ~ 840 degrees Celsius; 
 Quenching temperature: (1210 ~ 1230 salt bath furnace, box furnace 1210 ~ 1230); 
 Quenching: Oil; tempering temperature ranges from 540 to 560 degrees Celsius; HRC (63 box furnace, salt bath furnace 64). 

 Delivery condition: hot rolling, forging, annealing cold-drawn steel bar to the state of delivery, hot-rolled, forged steel bar to annealing + other processing methods (peeling, light pull, polished, or polished, etc.) after the delivery process. 
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