Shanghai, China
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Hot Rolled Steel Bar, Forged Steel Round Bar, Steel Round Bar manufacturer / supplier in China, offering AISI / SAE 4340/DIN 34CrNiMo6 1.6582 Alloy Round Steel Bar, En10025-6 S690q 1.8931 Structural Steel Plate, S890ql, 1.8983 High Strength Low Alloy Steel Plate and so on.

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Supplier Homepage Products Alloy and carbon steel steel bar AISI / SAE 4340/DIN 34CrNiMo6 1.6582 Alloy Round Steel Bar

AISI / SAE 4340/DIN 34CrNiMo6 1.6582 Alloy Round Steel Bar

Get Latest Price
Purchase Qty. / Reference FOB Price
1-49 Tons US $1,200
50-99 Tons US $1,150
100-499 Tons US $1,100
500+ Tons US $900
Port: Shanghai, China
Production Capacity: 5000 Tons/Month
Payment Terms: L/C, T/T, Western Union
Type: Alloy Steel Bar
Standard: AISI, ASTM, GB, JIS, DIN, BS
Technique: Forged, Hot Rolled
Application: Structural Steel Bar
Surface Treatment: Black, Peeled, Turned, Grinded
Alloy: Alloy

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Basic Info

Model NO.: AISI 4340, 34CrNiMo6, SNCM439, GB 40CrNiMoA
Special Use: Gear, Wheels, Boiler, Pressure Vessel Steel
Product Name: SAE 4340/DIN 34CrNiMo6 Alloy Round Steel Bar
Material Number: 1.6582
GB: 40CrNiMoA
JIS: Sncm439
Delivery Condition: Quenched and Tempered
Delivery Term: Fob, CIF, CFR, Exwork, etc
Shipping: by Sea, Air
Payment Term: T/T, L/C
Tensile Strength: 980MPa
Yield Strength: 835MPa
Trademark: BOZHONG or customized
Transport Package: Seaworthy Packing
Specification: 10-1300mm, 3000-6000mm
Origin: China

Product Description

AISI / SAE 4340 Alloy Steel Bar , Annealed or QT for Machinery & Engineering Industry
Steel Grade:4340Application:Machinery Steel, Engineering Steel
Shape:Round BarStandard:AISI, SAE, ASTM
Dimension:Φ 10-1300 mmSurface:Black, Peeled, Turned, Grinded
Technique:Hot Rolled, ForgedUltrasonic Test:100% UT Passed
 Chemical Composition (%)



 Hot RolledForged
Diameter (mm)10-260100-1300
Length (mm)3000-60003000-6000
 Delivery Condition
EAF+LF+VD, Hot Rolled or Forged, Black surface or Machined surface (Peeled, Turned,
Grinded), Annealed or Q+T, UT 100% Passed
 Mechanical Properties
 Tensile Strength
Yield Strength
Min98083512%55%As required
Max.------------------------As required
AISI / SAE 4340 grade is a low-alloy steel containing chromium and molybdenum and
nickel as strengthening agents. The steel has good strength and toughness, hardenability and overheat resistance stability, also high susceptibility of flake formation and temper brittleness. Its poor weldability requires high temperature preheating and stress relieving, before and after process. It should be Hardened and tempered before application.
This low-alloy steel finds many applications where high strength, plasticity required such
as large and important parts requiring hardening and tempering as heavy load axle for
heavy machinery, axle with diameter over 250mm for steam turbine, axle of rotor wing
for helicopter, axle of turbo and turbine blade and heavy load transmission part for jet engine, fasteners and gear for crank axle. It's also used for rotor spindle and blade
where temperature over 400ºC. It can be used as important part with special properties
after nitriding and ultrahigh strength steel after low tempering isothermal quenching. 

 Quality Assurance:
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT; 
(5) eddy current flaw detection-ET

Company information:

Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, military, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
steel coil
steel plate
steel sheet
steel bar/rod
    steel round bar
    steel flat bar
    steel square bar
steel pipe/tube ( welded or seamless )
    steel round pipes 
    steel square pipes
    steel welded tubes
    steel seamless tubes
steel strip
steel beam
steel angle
steel channel
steel flange
Steel wire
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Pipeline steel
Bridge steel
Nuclear power steel
Structural steel
Die steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel

Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price. 
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can you provide a sample for our testing before confirm the order?
A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come. 

Warmly welcome! Pick up your phone and Call us!
Send us the inquiry here!
We will reply you at the first time.

Contact US:
Annie Wang
Direct Line:+86-21-6766-0089

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