Shandong, China
Business Type:
Manufacturer/Factory
Number of Employees:
66
Year of Establishment:
2012-02-17
Management System Certification:
ISO 9001, ISO 9000
Average Lead Time:
Peak season lead time: within 15 workday
Off season lead time: within 15 workday
OEM/ODM Service
Sample Available

Steel Round Bar, Solid Round Bar, 40cr Steel Bar manufacturer / supplier in China, offering Carbon Alloy Solid Round Bar AISI 4140 SAE4140, High Quality Rectangular Hot Galvanized Steel Pipe Carbon, Galvanized Steel Angle Hot Sale Angle Steel and so on.

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Supplier Homepage Products Steel Bars Carbon Alloy Solid Round Bar AISI 4140 SAE4140

Carbon Alloy Solid Round Bar AISI 4140 SAE4140

Get Latest Price
Purchase Qty. / Reference FOB Price
10-19 Tons US $600
20+ Tons US $700
Port: Qingdao, China
Production Capacity: 100000 Mt Per Year
Payment Terms: L/C, T/T, D/P
Type: Alloy Steel Bar
Standard: AISI, ASTM, GB, JIS, DIN
Technique: Hot Rolled
Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
Surface Treatment: Coated
Alloy: Alloy

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Basic Info

Model NO.: Dia: 3.2mm-500mm
Trademark: Jiahexin steel
Transport Package: Standard Export Packing
Origin: Qingdao, China

Product Description

Alloy steel bar--AISI/SAE 4140, 4340, 8620, 8640, 5120, 5140, etc 

1. Dia: hot rolled 12mm-250mm, forged: 60mm-800mm
2. Length: 2000-5800mm 
3. Process: EAF + LF + VD 
4. Heat treatment: Normalized / Annealed / Quenched / tempered 
5. Delivery condition: Hot forged, black surface or Turned (optional), rough machined(optional) 
6. Technical Data: Chemical Composition, Physical Properties and Mechanical Testing according to the customer's requirement 
7. Test: Ultrasonic test according to SEP 1921-84 G3 C/c 


 

Size of AISI 4140 Steel Round Bar

Round bar
Diameter(mm)Length (mm)
   

20~800

3000~9000

   

Plate

Thickness(mm) 

Width (mm)  

Length (mm)   

Max:800

Max:2200

Max:9000

The special size can be customized.

 Chemical Compositions

Grade

C

Si

Mn

P

S

Cr

Mo

Ni

42CrMo

0.38~0.45

0.17~0.37

0.50~0.8

≤0.035

≤0.035

0.9~1.2

0.15-0.25

≤0.3

4140

0.40~0.45

0.15~0.35

0.75~1.0

≤0.035

≤0.040

0.8~1.1

0.15-0.25

-

SCM44

0.38~0.43

0.15~0.35

0.60~0.9

≤0.030

≤0.030

0.9~1.2

0.15-0.30

≤0.25
1.72250.38~0.45≤0.400.60~0.9≤0.025≤0.0350.9~1.2
0.15-0.30

 

Features of AISI 4140 alloy steel

1, Chromium molybdenum alloy steel 

2, Slightly higher carbon content then 4130

3, Greater strength and heat treatment 

Typical Applications 

1, Applications in the oil and gas sector

2, Connection rods, collets, conveyor pins, 

3, Gears, stem assemblies, 

4, Pump shafts and tool holders

 

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