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20CrMn hot rolled round bars and forged round bars
20CrMn round bar is the alloy structural round bar under the Chinese standard of GB/T 3077-1988. 20CrMn round bar is mainly used in gear, shaft and friction wheel, bolt etc.
The delivery condition 20CrMn round bar are:hot rolled or forged + Normalizing+Tempering+Quenching and tempering+Normalizing and tempering+Annealing .
The size for 20CrMn 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
The UT standard what we can do are Chinese standard of GB/T 6402 I.II,III and export standard SEP1921 CLASS C/C，D/D，E/E.
The more information of 20CrMn hot rolled and forged round bar shown in the following table:
20CrMn round bar Chemical composition
GRADE |
C% |
Si% |
Mn% |
P% |
S% |
Cr% |
Cu% |
Ni% |
Mo% |
|
20CrMn |
0.17-0.23 |
0.17-0.37 |
0.90-1.20 |
0.035 |
0.035 |
0.90-1.20 |
0.03 |
0.03 |
0.15-0.25 |
20CrMn round bar Mechanical properties
GRADE |
Tensile Strength min |
Yield Strength min |
Elongation min. |
contraction min |
impact min |
Hardness Max |
|
σb/M Pa |
σs/M Pa |
δ5/% |
ψ/% |
Akv/J |
HBS |
|
|
20CrMn |
930 |
735 |
10 |
45 |
47 |
187 |
As a professional global steel supplier, we promise we can offer you the qualified 20CrMn hot rolled round bars and forged round bars at the competitive price and rapid delivery time. We keep many 20CrMn hot rolled round bars and forged round bars with the top quality in our warehouse, So hereby, we sincerely hope you join us,let's join hands to make you be the No.1 in your local steel market.