PRODUCT NAME :alloy tool steel round bar ( forged ,rolled )
hot working tool steel , cold working tool steel .
STANDARD:
GB/T1299-2000 ISO 4957
GRADE COMPARISION:

ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:

 MANUFACTURING TECHNIQUE:

EFA+LF+VD(ESR)+ hot forged (hot rolled )
HEAT TREATMENT SPECIFICATION AND MECHANICAL PROPERTIES:

Measuring and cutting tool steel.

Hardness HBS: 241~197

Impression diameter mm: 3.9~4.3

Quenching temperature for specimen ℃: 820~860

Cooling medium for specimen quenching : oil 

Specimen quenching hardness HRC: 62

 DELIVERY CONDITION :ANNEALED 

SURFACE : BLACK / GRINDING / PEELING
DIMENSION : mm
Forged round bar :dia 80-450mm
Rolled round bar :dia 16-250mm
Coild rod : dia 5.5-20mm
Wire : dia 0.2-13mm
Rolled flat bar :thickness 5-90× width 44-300mm
Forged flat bar:thickness 120-800×width 120-800
length : forged bar free length 4-5.8M,rolled bar 5.8M. for customers special requirment, the bar length can do 20 meters long.
Tolerance on diameter of forged bar : black surface -0/+5mm, peeled surface -0/+3mm.
REMARK:
Above listed parameters and sepcification only for reference . Specific parameters according to standard. Requirments beyond standard will be negotiate by both sides .
Delivery state:normalized ,annealed, spheroidal annealed, quenched & tempered ,bright bar, cold-drawn, etc. Should be indicated in contract .
Listed specifications are only typical grades; products of required specifications can be developed/produced per international, Chinese or industry standards, or based on agreements with customers.

Packing :
Forged bar , rolled bar and coil packing in loose . Rolled wire packing in plastic woven cloth or wooden case.
APPLIED RANGE: