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4140 Cold Drawn Alloy Steel Round Bar-Cold Finished
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4140 Cold Drawn Alloy Steel Round Bar-Cold Finished

FOB Price

Get Latest Price

0 ~ 680 ( Negotiable )

|

- Minimum Order

Country:

China

Model No:

-

FOB Price:

0 ~ 680 ( Negotiable ) Get Latest Price

Place of Origin:

China

Price for Minimum Order:

-

Minimum Order Quantity:

-

Packaging Detail:

Seaworthy Package

Delivery Time:

Within 10 - 45 days after confirmed

Supplying Ability:

2000 Metric Ton per Month

Payment Type:

PayPal, Money Gram, Western Union, D/P, D/A, L/C, T/T

Product Group :

-

Contact Now
Free Member

Contact Person Cindy

Room 1109, Floor 11, No. 275-8, Guoding East Road, Yangpu Dist., Shanghai, China, Shanghai, Shanghai

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Product Description

Applications

***5 Cold Drawn Carbon Steel Round Bar is used where greater strength is required than can be obtained from the lower carbon steels. It responds to heat treatment, and a wide range of properties can be obtained. Applications include shafts, machinery parts, bolts, pinions, gears, etc.

Quality Standard

ASTM A**8 Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished
EN ****7 Bright steel products.
EN ****8 Dimensions and tolerances of bright steel products
GB/T **5 Dimension, shape, weight and tolerance for cold-drawn round, square and hexagonal steels
GB/T ***8 Technical Requirements for Quality Structural Steels Cold Drawn Bar

All Grades Comparison
Material no. As ***3 BS**0 ASTM A*9 JIS G***1
1.***3 ***5 **0A*7/EN*3B ***5 S*5C
Chemical Composition(%)
C(***0) C(***5) Mn Si P S
0.***0.*4 0.***0.*0 0.***0.*0 0.*0 max 0.**0 max 0.**0 max
Mechanical Properties( T=*0°C if not differently stated )
Dia(mm) Tensile Strength Rm (Mpa) Yield Strength R2 (Mpa) Fracture elongation A5 (%) Hardness (HB)
*6 max **0 min **0 min 8 min **7 max
****8 **0 min **0 min 8 min **5 max
****0 **0 min **0 min 9 min **0 max
Diameter Tolerance
Diameter Tolerance H9 Tolerance H*0 Tolerance H*1 Tolerance H*2
(mm) (mm) (mm) (mm) (mm)
3 (*0,*0.**5) (*0,*0.**0) (*0,*0.**0) (*0,*0.**0)
**6 (*0,*0.**0) (*0,*0.**8) (*0,*0.**5) (*0,*0.**0)
***0 (*0,*0.**6) (*0,*0.**8) (*0,*0.**0) (*0,*0.**0)
****8 (*0,*0.**3) (*0,*0.**0) (*0,*0.**0) (*0,*0.**0)
****0 (*0,*0.**2) (*0,*0.**4) (*0,*0.**0) (*0,*0.**0)
****0 (*0,*0.**2) (*0,*0.**0) (*0,*0.**0) (*0,*0.**0)
****0 (*0,*0.**4) (*0,*0.**0) (*0,*0.**0) (*0,*0.**0)
Straightness Tolerance
Diameter(mm) Straightness(mm/mtr)(max) Total Straightness(mm)(max)
***5 3 Total length*Max Straightness
****0 2 Total length*Max Straightness
****0 1 Total length*Max Straightness
Length Tolerance

Cut to Lengthup to ***0Corresponding to specifications

Type of Length Length(mm) Length Tolerance(mm)
Manufacturing Length ********0 +/***0
Stock Length ***0 or ***0 (*0,***0)
Process

Step1: Our process begins with either hot-rolled steel coils or hot-rolled straight bars from the mill. When hot-rolled bars are used, they are drawn individually. When coils are used, overhead cranes use C-hooks to safely lift the coil onto the “Payoff-Decoiler.”
Step2: Steel unwraps from the “Payoff De-Coiler” and is fed through the horizontal and vertical pre-straightener rollers to “break the memory” of the coil.
Step3: Steel continues on through the shot blaster so that the surface of the bar can be cleaned of all scale and rust.
Step4: Now the steel is push-pointed through a die. The drawing unit will then pull the steel through that same die, in a continuous motion.
Step5: Continuous straightening is maintained by passing the steel through more rollers.
Step6: Non-destructive testing is in place on all drive lines to ensure that surface defects from the raw materials are being detected and sorted out.
Step7: More straightening processes are in place throughout the draw line.
Step8: Shear barrels or shear knives will shear or cut the bar to the customer’s desired length.
Step9: The final straightening process occurs at the *-roll straightener when the bar passes through the large concave and convex rolls. Guide blades, angles and pressure all contribute to the final straightness of the bar.

Machinability

Machinability rating is approximately *4% based on ***2 as **0%. Average surface cutting speed is between *5 and **5 feet per minute.

Weldability

Due to higher carbon content, this material is not readily welded.With thin sections and flexible design, gas or arc welding may be used without preheating, but in joints over 1/2” to 3/4” thick preheating is necessary. To develop equivalent strength in a weld, a low alloy filler is recommended. Stress relieving
after welding is also recommended. The grade of welding rod to be used depends thickness of section, design, service requirement, etc.

Heat Treating

This steel is essentially water-hardening, but it may be quenched in oil. The recommended quenching temperatures are ***0ºF for water and ***5ºF for oil. A wide range of mechanical properties can be obtained by tempering at different temperatures between **0ºF and ***0ºF. Tempering in the range from **0ºF to **0ºF should be avoided.

Packaging

Lengths of *8″ and under are bundled and strapped to skids, or put in corrugated shipping containers. Longer lengths are shipped in 1,**0lb bundles, 5 bands per bundle.

C:
 
Shanghai Unite Steel Trading Co., Ltd.
Cindy Liu
T: *6 *1 ***********1 | F: *6 *1 *******1
Skype: ustcindy
cindyliu(((at)))shunitesteel((dot))com
shunitesteel
((dot))com

Country: China
Model No: -
FOB Price: 0 ~ 680 ( Negotiable ) Get Latest Price
Place of Origin: China
Price for Minimum Order: -
Minimum Order Quantity: -
Packaging Detail: Seaworthy Package
Delivery Time: Within 10 - 45 days after confirmed
Supplying Ability: 2000 Metric Ton per Month
Payment Type: PayPal, Money Gram, Western Union, D/P, D/A, L/C, T/T
Product Group : -

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