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Sichuan Liaofu Special Steel Trading Co., Ltd.
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Material: AISI 4340,DIN 36CrNiMo4,GB 40CrNiMoA,JIS SNCM439
Alloy Flat Steel Bars!
Standard:ASTM,JIS,GB, EN(DIN,JIS,DIN)
Quick Details
Place of origin:Dalian,China Brand name:Dongbei Tegang
steel grade: Alloy steel Technique:Hot rolled or cold rolled or forged
Application: Mechanical Industry Trade term:EXW/FOB/CIF.etc
Packing&Delivery
Packing Detail:wooden case or according to client request
Delivery Detail:in 20 days or according to client request
Detailed Product Description
1.Product name: AISI 4340 Flat Steel Bars
2.size:
| length | Width | Thickness |
| 0.1m-10m | 10mm-600mm | 10mm-200mm |
3.Tolerance:
| length(mm) | Outer Diameter(mm) | Thickness(mm) |
| +0.1-0.1 | +0.5-0.5 | +0.05-0.05 |
4.Surface Quality: Polish or grinding or black
5.Supply State: hot rolled or cold rolled or forged or annealed or cold drawn
6. Packing,Mark&Certificate:
6.1 supply MTC according to customer.
6.2 Steel should be supplied in seaworthy packing for sale transportation and corrosion protection from sea-environment.
7.similar steel grade & equivalent steel materials:
Related Specification:
| USA | Japanese | Germany | British | France | International | Chinese | |
| AISI&SAE | UNS | JIS | ENDIN | ENBS | ENNF | ISO | GB |
4340 | ---- | SNCM439 | 36CrNiMo4 | 1.6511 | 1.6511 | --- | 40CrNiMoA |
8.Chemical Composition:
| Material | AISI 4340 |
| C | 0.37-0.44 |
| Mn | 0.50-0.80 |
| Si | 0.17-0.37 |
| P | 0.045 |
| S | 0.03 |
| Cr | 0.60-0.90 |
| Mo | 0.15-0.25 |
| Ni | 1.25-1.65 |
| Cu | ≤0.30 |
9.Heat Treatment Cycle:
| Quenching Temp | Cool Media | Tempering Temp | Cooling Media |
| 860 ±15 °C | Oil | 600 ±15 °C | air |
10. Mechanical Properties(In Quenched & Tempered State):
| Material | AISI 4340 |
| Tensile Strength (MPA) | ≥980 |
| Yield Strength(MPA) | ≥835 |
| Elongation(%) | ≥12 |
| Reduction In Area(%) | 55 |
| Impact Energy(J) | 78 |
| Hardness(HB) | ≤269 |
11.Standards:
| ISO | International | International Standardization Organization |
| AISI | USA | Acronym of American Iron and Steel Institute |
| SAE | USA | Society of Automotive Engineers |
| UNS | USA | UNIFIED NUMBERING SYSTEM |
| BS | UK | British Standard |
| JIS | JP | Japanese Industrial Standards |
| DIN | GER | Deutsches Institut für Normung e.V. |
| NF | FRA | Association Francaise de Normalisation |
| GB | CN | China GuoJia Biaozhun |
(1)Delivery time: In 20 days or according to client's requires
(2)Trade terms:EXW/FOB/CIF etc
(3)Payments:T/T or L/C or according to client's requires
(4)Port:Dalian or according to client's demand
(5)MOQ: 100kgs or at customer's demands
(6)Packing: seaworthy packing ,wooden case ,carton,woven bag or at client's requires
15.Contact Information:
16.Our company management team:
Certifications:
Factory equipments:
Products stocks:
Welcome to our company,thank you very much! If anythings,Please don't hesitate to let me know!
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