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Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400

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Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400

Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400
Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400

Large Image :  Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400

Product Details:
Place of Origin: MAINLAND CHINA
Brand Name: UST
Certification: ISO 9001:2008
Model Number: ASTM 4340
Payment & Shipping Terms:
Minimum Order Quantity: 3 Metric tons
Price: USD 800-2000 / Metric Ton
Packaging Details: In standard export packing and seaworthy material with rectangular shape bundle, covered with tarpaulin, in ontainers or in bulk, or upon request
Delivery Time: 15-35 days
Payment Terms: L/C, T/T, D/A, D/P
Supply Ability: 1000 Metric Tons per Month
Detailed Product Description
Matrial: Alloy Steel Standard: GB, ASTM, DIN,JIS
Grade: 4340 G43400 Diameter: 12-320mm
Length: Below 16 Meters Shape: Round Bar
Techniques: Cold Drawn; Hot Rolled; Cold Rolled; Forged Surface: Black, Bright, Polished, Peeled, Or Upon Request
Ultrasonic Test: 100% UT Passed Processing: Annealed Or Quenched And Tempered Provided
End: Beveled, Plain End As Required Quality Inspection: SGS, BV Etc.
Service: Cutting Service And 3rd Party Inspection Is Provided
High Light:

alloy steel round bar

,

spring steel round bar

,

hot rolled round bar

AISI 4340 (G43400) Low Alloy High Tensile Steel Bar / Rod 12-320mm

 

 

INTRODUCTION

 

Alloy steels are designated by AISI four-digit numbers. They comprise different kinds of steels having composition exceeding the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va set for carbon steels.

 

AISI 4340 alloy steel is a heat treatable and low alloy steel containing chromium, nickel and molybdenum. It has high toughness and strength in the heat treated condition.

 

APPLICATIONS

 

It is usually used in making gears, shafts, piston etc. Like the high wear-resistance parts which are used in plane and automotive etc.

 
SUPPLY RANGE OF ALLOY 4340
 
-Dimension: Diameter 4-1600 mm, any length below 16 meters

-Delivery Conditions:

Cold drawn: 4-100 mm

Peeled: 30-160 mm

Grinded: 4- 600 mm

Turned: 130-1200 mm

Hot rolled: 12-320 mm

Hot forged: 130-1600 mm

- EAF+(ESR) or EAF+LF+VD+(ESR)

- HOT rolled; Cold rolled; Forged; Cold Drawn

- Heat Treatment: Untreated, Annealing, N+T, Q+T

- Smelting: EAF+LF+VD (+ESR)

- Surface Finish: Black, Rough Machined, Peeled, Turned or upon request

- UT 100% passed

- Cutting service provided

- Third Party inspection is acceptable (SGS, BV etc.)

 

Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 0

 

STEEL EQUIVALENCY

 

Country USA Britain Britain Japan
Standard ASTM A29 EN 10250 BS 970 JIS G4103
Grades 4340 36CrNiMo4/
1.6511
EN24/817M40 SNCM 439/SNCM8

 

 

CHEMICAL COMPOSITION

 

Standard Grade C Mn P S Si Ni Cr Mo
ASTM A29 4340 0.38-0.43 0.60-0.80 0.035 0.040 0.15-0.35 1.65-2.00 0.70-0.90 0.20-0.30
EN 10250 36CrNiMo4/
1.6511
0.32-0.40 0.50-0.80 0.035 0.035 0.40 0.90-1.20 0.90-1.2 0.15-0.30
BS 970 EN24/817M40 0.36-0.44 0.45-0.70 0.035 0.040 0.1-0.40 1.3-1.7 1.00-1.40 0.20-0.35
JIS G4103 SNCM 439/SNCM8 0.36-0.43 0.60-0.90 0.030 0.030 0.15-0.35 1.60-2.00 0.60-1.00 0.15-0.30

 

 

MECHANICAL PROPERTIES

 

 

Normalized 4340

Annealed 4340

Tensile Strength

185,500 psi

108,000 psi

Yield Strength

185,500 psi

68,500 psi

Elongation (2")

12.2%

22%

Reduction in Area

36.3%

49.9%

Brinell Hardness

363

217

 

 

Fabrication and Heat Treatment

 

Machinability

AISI 4340 alloy steel can be machined using all conventional techniques. Machining process can be performed in the annealed or normalized and tempered conditions.

 

Forming
AISI 4340 alloy steel has good ductility and formability in the annealed condition. It can be bent or formed by pressing or spinning in the annealed state.

 

Welding
AISI 4340 alloy steel can be welded using fusion or resistance welding methods. Preheat and post heat weld procedures are followed while welding this steel by established methods.

 

Heat Treatment
AISI 4340 alloy steel is heat treated at 830°C (1525°F) followed by quenching in oil.

 

Forging
AISI 4340 alloy steel is forged at 427 to 1233°C (1800 to 2250°F).

 

Cold Working
AISI 4340 alloy steel can be cold worked using all conventional methods in the annealed condition. It has high ductility.

 

Annealing
AISI 4340 alloy steel is annealed at 844°C (1550°F) followed by cooling the furnace.

 

Tempering
AISI 4340 alloy steel should be in the heat treated or normalized and heat treated condition before tempering. Tempering temperatures depend upon the desired strength level.

 

Hardening
AISI 4340 alloy steel can be hardened by cold working or heat treatment.

 

Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 1

 

What we can offer?

-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.

 

Shape Available

  • Solid round bar
  • Flat bar
  • Square bar
  • Hexagon bar
  • Block
  • Plate
  • Sheet
  • Wire rod
  • Strip

 

Our Advantages

  • High mechanical property and quenching, enable the surface share equal hardness after deal with it
  • Good polishing and low roughness
  • Making the heat-treatment to harden condition before using it
  • Competitive price
  • Fast production lead-time
  • All the material are inspected with 3 times to meet the highly standards
  • Pure steel quality & stable quality to be guarantee
 

OUR MAIN PRODUCTS ARE LISTED AS BELOW

 

Round Hot Rolled Steel Bar , Low Alloy High Tensile Steel Bar / Rod AISI 4340 G43400 2

 

Notes:

Available Size:
-Round: Dia. 4-1600 mm
-Flat: T. 10-120 mm x W. 60-810 mm
-Block: T. 80-1200 mm x W. 100-1600 mm

 

PAYMENT AND SHIPPING

 

1. Both T/T and L/C will be acceptable

2. Trade Terms: FOB, CIF, CFR

3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples

 

COMPANY INFORMATION

 

Shanghai Unite Steel Trading Co., Ltd

We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!

 

FAQ

 

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 doesn'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 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.

 

 

Contact Details
SHANGHAI UNITE STEEL

Contact Person: Eric

Tel: 13661534998

Send your inquiry directly to us (0 / 3000)

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