PRODUCT NAME :Carbon steel round bar ( forged ,rolled )
STANDARD:
GB/T699-1999 EN10083-2 ISO683-1 EN10250-2
GRADE COMPARISION:
|
GB |
ГОСТ |
ASTM |
BS |
JIS |
NF |
DIN |
|
20 |
20 |
1020 |
050A20 |
S20C |
XC18 |
C22,CK22 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu |
|
0.17~0.23 |
0.17~0.37 |
0.35~0.65 |
≤0.035 |
≤0.035 |
≤0.30 |
≤0.25 |
≤0.25 |
HEAT TREATMENT SPECIFICATION:
Phase transformation point : Ac1=735℃，Ac3=855℃，Ar3=835℃，Ar1=680
normolizing temperature 920~950℃. Quenching temperature :910℃±10℃，10%NaCl water cooling .
MECHANICAL PROPERTIES:
DELIVERY CONDITION :
normalized ,annealed, black surface ,rough machined or quenched & tempered , should be indicated in contract .
DIMENSION : mm
length : forged bar free length 4-5.8M,rolled bar 5.8M. for customers special requirment, the bar length can do 20 meters long.
APPLIED RANGE:
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:annealed, spheroidal annealed, quenched & tempered ,bright bar, cold-drawn, etc.
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.
