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8620 hot rolled round bars ,8620 forged round bars
8620 round bar is the alloy structural round bar under the standard of ASTM A29/A29M-04.
The 8620 round bars are mainly used for gear,shaft, roller, bolts and so on .
EAF ARC FURNACE + LF REFINING+ VD + forged(DOUBLE) + FIXED LENGTH + SEP1921C/c TESTING
the delivery condition 8620 round bar are:hot rolled or forged +Normalizing+Tempering+Quenching and tempering+Normalizing and tempering+Annealing .
The size for 8620 round bar which available for our bebon steel are Ф 5-80 for hot rolled round bar and Ф 80-1200 for forged round bar ,the length range is from 3000 to 12000mm.
The tolerance of the diameter is -0/+3mm ,The tolerance of the length is -0/+20mm.and the straightness tolerance is ≤3mm/m
surface delivery status: black/polishing/turning
UT standard are : Chinese standard of GB/T 6402 I.II,III and export standard SEP1921 CLASS C/C，D/D，E/E.
8620 hot rolled round bar
The Chemical composition of the 8620 hot rolled and forged round bar analysis -% by mass
|
GRADE |
C% |
Si% |
Mn% |
P% |
S% |
Cr% |
Cu% |
Ni% |
|
8620 |
0.18-0.23 |
0.15-0.35 |
0.70-0.90 |
0.035 |
0.035 |
0.40-0.60 |
0.03 |
0.40-0.70 |
The Mechanical properties of the 8620 hot rolled and forged round bar
|
GRADE |
Tensile Strength min |
Yield Strength min |
Elongation min. |
contraction min |
impact min |
Hardness Max |
|
σb/MPa |
σs/MPa |
δ5/% |
ψ/% |
Akv/J |
HBS |
|
|
8620 |
980 |
785 |
9 |
40 |
47 |
197 |
Bebon could provide 8620 hot rolled round bars and forged round bars under the standard of ASTM A29/A29M-04.we can arrange our QC department to inspection the goods for our customers with no charge and we can also could do the UT test, impact test,Chemical composition analysis, Mechanical properties test, and Simulated treatment according to our customer requirement.We are sincerely looking for your cooperation.