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GB/T 699 35# round bar

  • 85 Views
  • 11-May-2024

GB/T 699 35# carbon steel is a medium carbon steel at chinese standard. Compared with 30# carbon steel, 35# has higher carbon element, so the strength is better. We henan KUNFENG can offer forged round bars OD 80 mm - 1200 mm.

Because of its properties, GB/T 699 35# round bar is widely used for manufacturing various machinery parts heat pressing components which bear heavy load with small section,such as axle pin,shaft, crank axle,crossbeam, connecting rod,lever,etc. GB/T 699 35# round bar can not be applied to produce welded structural parts.

GB/T 699 35# round bar, is usually used after normalizing treatment, or quenching and tempering treatment, to get good properties and machinability. GB/T 699 35# round bar is in a large need,so we henan KUNFENG stock large quantity of forged bars in the warehouse, and various size round bars included. If you have any need on GB/T 699 35# round bar, please do not hesitate to contact us.

s are usually produced under the followed procedures: EAF arc furnace + LF purify affinage + VDF + ingot steel(bottom gating /argon) + forged + annealing + black polishing (turnery) + GB/T6402-92 ΙΙ UT test + smooth edges with sawing .

s chemical composition by %,maximum

Grade

C

Si

Mn

P

S

Ni

Cr

Cu

GB/T 699 35#

0.32-0.39

0.17-0.37

0.5-0.8

≤0.035

≤0.035

≤0.3

≤0.25

≤0.25

s mechanical properties


Grade

Delivery State

T.S.
N/mm2
Min

Y.S.
N/mm2
Min

A,%
Min

Z,%
Min

Hardness,
(annealing or tempering) HB,max

Forging ratio

Grain Size
(level)

Nonmetal ratio

GB/T 699 35#

Hot rolled, forged, or heat treatment

530

315

20

45

197

≥ 4:1

≥ 6

≤ 2.0

If you need GB/T 699 35# round bars, or other carbon steel round bars,pls be free to contact us.

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