PRODUCT NAME : C45 Carbon steel.( forged / rolled )
STANDARD:
GB/T699-1999 EN10083-2 ISO683-1 EN10250-2
GRADE COMPARISION:

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

HEAT TREATMENT SPECIFICATION AND MECHANICAL PROPERTIES:

Different heat treatment hardness :137~170HBS,167~229HBS,201~269HBS.
Tensile strength >686Mpa
yeild strength >490Mpa
enlongation δ5>17%
reducttion ψ>45%
impact >78J/cm2
hardness 201~269HB

MANUFACTURING TECHNIQUE:
EAF+LF+VD +forged/ rolled
DELIVERY CONDITION :FORED / ROLLED SLOW COOLING 
SURFACE : BLACK / GRINDING / PEELING
DIMENSION : mm
Forged round bar :dia 80-750mm
Rolled round bar :dia 8-250mm
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 3-5.8M,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:

Widly used inmachinary manufactuing .

 Critical point 

 AC1

 AR1

 Appromiate (℃)

 720-800

770-710

 Performance 

Value 

Tensile strength(MPa)

≥510

 Yeild strength (MPa)

≥305

Enlongation (%)

≥23

 Nomalizing temperature 840-890℃,air cooling .

Annealing temperature appromiate 830℃,air cooling .

Quenching 840-890℃,water cooling , tempering550-650℃.