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 |
|
20Mn |
20Г |
1021,1022 |
080A20 |
|
XC18 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P≤ |
S≤ |
|
0.17/0.23 |
0.17/0.37 |
0.70/1.0 |
0.035 |
0.035 |
HEAT TREATMENT SPECIFICATION:
tensile strength (MPa)：≥275(28)
Elongation δ5 (%)：≥24
Reduction of area ψ (%)：≥50
Hardness ：no heat treatment ≤197HB
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:
Used for camshaft , gear, coupler ,hinge , pin , towbar, bearing ring etc
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.
