JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
| Payment Terms | L/C, T/T |
| Supply Ability | 80000KGS |
| Delivery Time | 7 Working Days |
| Packaging Details | Wooden Pallet BOX |
| Steel grade | Alloy Steel 4340 |
| Alloy or not | Is Alloy |
| Technique | Hot Rolled,Forged,Cold Drawn |
| Application | Die Steel Bar,chemical,shipbuilding |
| Type | Alloy Steel Bar |
| Standard | ASTM,DIN,AISI |
| Shape | Round |
| Length | 1--12m |
| Surface | black or bright |
| Diameter | 12mm-650mm |
| Heat treatment | Normalized +Annealed +Quenched + Tempered |
| Brand Name | DONGBEI SPECIAL STEEL |
| Model Number | 4340 |
| Certification | SGS ISO MTC |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 80000KGS |
| Delivery Time | 7 Working Days | Packaging Details | Wooden Pallet BOX |
| Steel grade | Alloy Steel 4340 | Alloy or not | Is Alloy |
| Technique | Hot Rolled,Forged,Cold Drawn | Application | Die Steel Bar,chemical,shipbuilding |
| Type | Alloy Steel Bar | Standard | ASTM,DIN,AISI |
| Shape | Round | Length | 1--12m |
| Surface | black or bright | Diameter | 12mm-650mm |
| Heat treatment | Normalized +Annealed +Quenched + Tempered | Brand Name | DONGBEI SPECIAL STEEL |
| Model Number | 4340 | Certification | SGS ISO MTC |
| Place of Origin | China | ||
| High Light | SAE4340 Alloy Steel Round Bar ，ASTM Standard Steel Round Bar ，4340 alloy round bar | ||
AISI/ASTM 4340 Alloy Steel Round Bar SAE AISI 4340 Steel Properties, Heat Treatment SAE4340 Alloy Steel
40CrMnNiMo8-4 is another alloy which displays superior mechanical properties. This material is available in the Annealed or Quenched and Tempered conditions. 4340 is used many industries including oil and gas exploration, gear manufactring etc.
Comparable Standards:
| AISI/SAE | DIN | W.Nr. | AFNOR | JIS | BS | SIAU | GB,YB |
| 4340 | 40CrMnNiMo8-4 | 1.6562 | - | SNCM439 | - | NCM4 | 40CrNiMoA |
Chemical Analysis (%):
| C | Mn | Si | Cr | Ni | Mo | P | S |
| 0.37-0.44 | 0.50-0.80 | 0.15-0.40 | 0.60-0.90 | 1.60-1.90 | 0.20-0.30 | ≤0.035 | ≤0.040 |
Mechanical properties
| Tensile str. (N/mm2) | Yield point (N/mm2) | Elongation (%) | Contraction (%) | Impack work (J/cm2) | Hardness (HB) |
| 980 | 835 | 12 | 205 | 55 | 269 |
| Heat Treatment(°C) | Physical Properties | ||||
| Quenched | Tempered | Thermal Conductivity (20°C)Wm-1. ok-1 | Typical Thermal expansion coefficient (20-200°C) | Specific Heat (20°C) | Density (20°C) |
| 850 | 600 | 12 | 12.7 | ||
AISI 4340 Alloy Steel Round Bar
Applications:
Description:
1. AISI 4340/GB40CrNiMo/DIN 1.6511 alloy steel round bar
2. Hot rolled or forged condition, annealing, black or milled surface
3. Hardness: ≤220HBS;
4. Hot rolled technology: EAF+LF+VD
Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface
5. Ultrasonic test standard: SPE1921-GR3, CLASS D/D or E/E
6. Production leadtime: 7~10 days
Competitive Advantage:
DongGuan RuiYuan Steel Co., Ltd Specializes in plastic mould steel, hot work mould steel,
cold work mould steel alloy steel and carbon structural steel, such as: P20, P20+Ni, 1.2714,
1.2083, 1.2316, H13, O1, D2, D3, D5, 1045, 1050, A3, 52100(EN31), 4137, 4140, 4340,
5140, 6150, 8620 and SCM420 for exporting over 20 countries now, such as: Brazil, India,
Turkey, Italy, Germany, Korea, Malaysia, Iran and so on.
Our company have introduced large-sized Vertical saw machines, horizontal saw machines,
Milling machines, Grinding machines and other advance equipments, we can export our
products by wholesales and retail sales, whole plate or strip is available. All our products
can meet the standards of DIN, AISI, JIS and GB, all the material should be inspected the
ultrasonic, hardness and others strict inspection process before the shipment!
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Exporter,Seller
Year Established:
1998
Total Annual:
80Millen-100 Millen
Employee Number:
200~500
Ecer Certification：
Verified Supplier
Jiangsu Mittel Steel Industrial Limited is located in Wuxi City, a beautiful city near Shanghai. Wuxi is close to Shanghai (BAO STEEL) ,Zhangjiagang (ZPSS),Ningbo (BAO XIN),KUN SHAN (DKSS), enjoy excellent geographic location and convenient water, land and air transporta... Jiangsu Mittel Steel Industrial Limited is located in Wuxi City, a beautiful city near Shanghai. Wuxi is close to Shanghai (BAO STEEL) ,Zhangjiagang (ZPSS),Ningbo (BAO XIN),KUN SHAN (DKSS), enjoy excellent geographic location and convenient water, land and air transporta...
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