6W6Mo5Cr4V die steel is low-carbon high-speed die steel. Compared with W6Mo5Cr4V2, the mass fraction of carbon is reduced by 0.21%. The mass fraction of vanadium is reduced by 1.05%–1.11%. The inhomogeneity of carbides is significantly improved. The bending strength and plasticity are increased by 30%~50%. The impact toughness is increased by 50%~100%.
6W6Mo5Cr4V Chemical Composition
6W6Mo5Cr4V Mechanical Properties
|Elongation at fracture|
|Reduction in Cross-section on fracture|
|As-Heat-Treated Condition||Brinell hardness(HBW)|
|472(≥)||749(≥)||33||32||23||Solution and Aging, Annealing, Ausaging, Q+T||431|
6W6Mo5Cr4V Physical properties
|Modulus of elasticity|
|Creep strain limit|
|Creep rupture strength|
|41||14||Solution and Aging,Annealing, Ausaging,Q+T||862||597|
6W6Mo5Cr4V mold steel has a narrow forging temperature range due to its high molybdenum content. The forging process is: the heating temperature is 1100~1140℃. The initial forging temperature is 1050~1100℃. The final forging temperature is 800~900℃.
The forging deformation resistance of 6W6Mo5Cr4V mold steel is relatively large.
6W6Mo5Cr4V mold steel is annealed after forging.
The ordinary spheroidizing annealing process: heating to 850~860℃ for 1~2h, cooling to 550℃ and then air cooling;
The isothermal spheroidizing annealing process: heating to 850~860℃ for 1~2h. The furnace is cooled to 740~750℃ and then kept for 3~4h. After the furnace is cooled to 550 ℃, it is air-cooled and the annealing hardness is 197~255HBS.
Quenching and tempering process
To get good toughness and higher wear resistance, lower and higher temperature tempering are usually used.
The process parameters: heating to 1180~1200℃ for quenching, 560~580℃. Temper three times. Every 1.5h, the hardness is 69~63HRC.
Features and Application
6W6Mo5Cr4V mold steel can be used to replace high-speed mold steel and high-carbon and high-chromium mold steel. It can be used to manufacture cold extrusion punches or cold heading punches for steel materials. The service life can be increased by 2 to 10 times.
6W6Mo5Cr4V Steel products
|Product type||Products||Dimension||Processes||Deliver Status|
|Plates/Sheets||Plates/Sheets||0.08-200mm(T)*W*L||Forging, hot rolling, and cold rolling||Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting|
|Steel Bar||Round Bar, Flat Bar, Square Bar||Φ8-1200mm*L||Forging, hot rolling and cold rolling, Cast||Black, Rough Turning, Shot Blasting,|
|Coil/Strip||Steel Coil/Steel Strip||0.03-16.0x1200mm||Cold-Rolled&Hot-Rolled||Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting|
|Pipes/Tubes||Seamless Pipes/Tubes, Welded Pipes/Tubes||OD:6-219mm x WT:0.5-20.0mm||Hot extrusion, Cold Drawn, Welded||Annealed, Solution and Aging, Q+T, ACID-WASHED|