C53 Carbon steel

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:

Tensile strength ≥630 yeild strength ≥375(38) enlogation ≥14 

reduction of area ψ (%):≥40  impact Akv (J):≥31(4)

Hardness : not heat treatment ≤241HB; annealed ≤207HB

Its medium carbon high strength carbon structure steel. Have higher strength and hardness after quenching .

MANUFACTURING TECHNIQUE: 

EAF+LF+VD +forged/ rolled
DELIVERY CONDITION :rolled / forged slowly 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 .