Description
Related specifications
Europe EN 1.***4
Germany DIN X*0CrMoV**1
Great Britain BS ***9 BH*3
USA AISI H*3A.
Japan JIS-SKD*1
GB/China 4Cr5MoSiV1
Chemical Analysis
C Mn Si Cr Mo V P S
0.***0.*0 0.**0.5 0.**1.0 4.**5.0 1.**1.3 0.**1.0 ≤0.**5 ≤0.**0
Applications
-General purpose hot worked tool steel used in aluminium extrusion
dies, backers and
bolsters, stems and mandrels, die casting dies and forging
inserts.
Die Casting
Dies
Dummy Blocks Extrusion Dies Hot
Forging Dies Heading Dies Hot Heavy Shear Blades
Inserts Mandrels Piercing Tools Hot
Plastic Mold
Dies
Punches Hot Swaging Dies Hot
Main feature: High tenacity, plasticity, thermostability and
abrasive resistance.
Hardening
Hardening should be done in controlled atmosphere, vacuum or
fluidized bed furnace.
Preheat gradually to **0/**0 ℃ then raise to ***0/***0℃,
holding for sufficient time to
attain uniformity throughout the tool, air cooling.
Tempering: Tempering should be carried out immediately after
air quenching. Heat to **0/**0℃,
holding for one to three hours. Tools benefit from multi-tempering
and a minimum of two
tempers is recommended. Care should be taken to ensure tools
cooling to room
temperature in between tempers. Also suitable for both bath and gas
nitriding.
Conventional Smelt: EF+LF+VD+ESR
Available size
Type
Thickness
mm
Width/Diameter
mm
Length
mm
Block ******0 *******0 ********0
Round
bar
*****0 ********0
Delivery Condition
Hot forged, Spheroidizing annealed with hardness HB******0
atment
Temperature
Range
Cooling/Quenching Notes
Forging ********0° F Slow Do not forge below ***0° F. Anneal after
forging.
Annealing ********5° F
Cool slowly at a
rate of *5° F per
hour to a ***0° F.
Protect against surface decarburization using
controlled atmosphere or by pack-annealing. Hold at
temperature for 2 hours.
Stress
Relieving
********0° F
Cool slowly in
furnace to **0° F.
Then in air.
Preheating ********0° F
Preheat time in furnace is ¾ Hr. per inch of thickness.
Heating up to temperature as slow as possible.
Hardening ********0° F
To minimize
distortion, air cool.
For maximum
hardness
diameters greater
than 6􀳦 should be
quenched in oil.
Soak time is *0 minutes per inch of thickness.
Minimum of 1 hour. Allow to cool to ******0° F before
tempering
Tempering In air.
Complete equalization of temperature throughout the
tools is essential for good results. Double temper.
Recommended temperature is ********0° F.
