SHANGHAI UNITE STEEL
| Payment Terms | L/C, T/T, D/A, D/P |
| Supply Ability | 1000 Metric Tons per Month |
| Delivery Time | 15-35 days |
| Packaging Details | In standard export packing and seaworthy material with rectangular shape bundle, covered with tarpaulin, in ontainers or in bulk, or upon request |
| 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 |
| Brand Name | UST |
| Model Number | ASTM 4340 |
| Certification | ISO 9001:2008 |
| Place of Origin | MAINLAND CHINA |
View Detail Information
Explore similar products
DIN 1.6580 34CrNiMo6 Hot Rolled Steel Bar , High Tensile Alloy Round Bar Size 10
MTC Passed DIN1.1121 Hot Rolled Bar , Alloy Round Bar Size 10-350mm
826M40 Hot Rolled Steel Round Bar High Tensile Strength With Peeled Turned
822H17 Alloy Hot Rolled Steel Bar Stock Custom Length For Automobile Industry
Product Specification
| Payment Terms | L/C, T/T, D/A, D/P | Supply Ability | 1000 Metric Tons per Month |
| Delivery Time | 15-35 days | Packaging Details | In standard export packing and seaworthy material with rectangular shape bundle, covered with tarpaulin, in ontainers or in bulk, or upon request |
| 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 | Brand Name | UST |
| Model Number | ASTM 4340 | Certification | ISO 9001:2008 |
| Place of Origin | MAINLAND CHINA | ||
| 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.
-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.)
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.
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
Our Advantages
OUR MAIN PRODUCTS ARE LISTED AS BELOW
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.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
10000000-25000000
Employee Number:
50~110
Ecer Certification：
Active Member
We, Shanghai Unite Steel 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... We, Shanghai Unite Steel 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...
Get in touch with us
Leave a Message, we will call you back quickly!