Product: 1.2343,H11,SKD6
Keywords: tool steel,die steel,specialty steel,steel bar,hotwork,coldwork,forged bar,alloy tool steel,flat bar, round bar,
Typical Analysis:
C : 0.33-0.43
Si : 0.80-1.25
Mn: 0.20-0.60
P : Max 0.030
S : Max 0.030
Cr: 4.75-5.50
Mo: 1.10-1.60
V : 0.30-0.60
Similar Grades: DIN 1.2343,GB/T 4Cr5MoSiV
Advantages:
Resists cracking when water cooled in service.
Superior properties at elevated temperatures.
Excellent impact strength.
Availability:
Very limited.Usually available in block and plate.
Application:
H11 is an excellent choice for a wide range of hot work and cold work applications. It has excellent nondeforming properties,and is used for hot shell punches,mandrels,and applications where resistance to splitting or cracking is desirable.
Machinability:
H11 has a machinability rating of 80 compared to a 1% carbon tool steel which is rated at 100.
Annealing:
Heat slowly to 1550°F for one hour per inch of thickness. Cool 75°per hour to 1000°F and air cool. For surface protection an atmosphere furnace or stainless foil wrap must be used. The annealed hardness of H11 should be 217 Brinell maximum.
