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Model No.: Aisi 4340
Brand: HuiTong Steel
Standard: Aisi, Astm
Place Of Origin: China
Production Process: Hot Rolled, Cold Drawn
Application: Structural Steel Bar, Die Steel Bar, Tool Steel Bar
Whether Alloy: Is Alloy
Special Steel: Cold Heading Steel
Species: Alloy Steel Bar, Carbon Steel Bar
Tolerance: ±1%
Processing Service: Bending, Welding, Decoiling, Cutting, Punching
Delivery Time: 7-14 days
Length: 1-12M
Specification: OD;10-812mm
Special Use: Mold Steel, Free Cutting Steel, Engineering Steel
Technical: Hot Rolled/ Forged/ Cold Drawn
Standard: JIS / ASTM / GB / DIN / EN /AISI
From: Round Bars/ Flat Bar / Blocks/ Tube
Straightness Of Cold Drawn Steel Bar: Max 0.8mm/M
HS Code: 730640000
Packaging: Standard packaging (or according to customer requirements)
Productivity: 5000 TONS/MONTH
Transportation: Ocean,Land,Air,Express,Others
Place of Origin: CHINA
Supply Ability: 5000 TONS/MONTH
HS Code: 730640000
Payment Type: L/C,T/T,Paypal,Money Gram,Western Union,D/P,Others
Incoterm: FOB,CFR,CIF,EXW,DDP,DDU,Express Delivery
1: 4340 steel introduction
AISI 4340 steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. AISI 4340 is also one kind of nickel chromium molybdenum steels. 4340 alloy steel is generally supplied hardened and tempered in the tensile range of 930 - 1080 Mpa. Pre hardened and tempered 4340 steels can be further surface hardened by flame or induction hardening and by nitriding. The 4340 steel has good shock and impact resistance as well as wear and abrasion resistance in the hardened condition. AISI 4340 steel properties offer good ductility in the annealed condition, allowing it to be bent or formed. Fusion and resistance welding is also possible with our 4340 alloy steel. ASTM 4340 material is often utilized where other alloy steels do not have the hardenability to give the strength required. For highly stressed parts it is excellent choice. AISI 4340 alloy steel can also be machined by all customary methods.
2: 4340 Steel equivalent
| Country | Japan | Germany | Britain | USA |
| Standard | JIS G4103 | EN10250 | BS970 | ASTM A29 |
| Grade | SNCM439 | 36CrNiMo4/1.6511 | EN24/817M40 | 4340 |
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 4340 | 0.38-0.43 | 0.15-0.35 | 0.6-0.8 | 0.035 | 0.04 | 0.7-09 | 0.2-0.3 | 1.65-2.0 |
| 36CrNiMo4 | 0.32-0.4 | 0.4 | 0.5-0.8 | 0.035 | 0.035 | 0.9-1.2 | 0.15-0.3 | |
| EN24 | 0.36-0.44 | 0.1-0.4 | 0.45-0.7 | 0.035 | 0.04 | 1.0-1.4 | 0.2-0.35 | 1.3-1.7 |
| SNCM439 | 0.36-0.43 | 0.15-0.35 | 0.6-0.9 | 0.03 | 0.03 | 0.6-1.0 | 0.15-0.3 | 1.6-2.0 |
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm | |
| Width 20mm-1000mm | ||
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 30-45 days | |
| Application | 4340 alloy steels are used for aircraft landing gear, automotive, oil and gas drilling, warm and cold forming, machine building, transfer systems like power transmission gears and shafts, general engineering industries and structural use applicatios such as heavy duty shafts, gears, axles, spindles, couplings, pins, chucks, molds and so on. | |
Other profiles we provide include Steel Rebars and round bars, as well as Steel Wire and Section Steel products. Steel plates of the same material include Alloy Steel Plate and Carbon Steel Plate. We can make galvanized steel plates. Steel pipes include hot-rolled steel pipes and cold-rolled steel pipes. If you need Pipe Flanges And Fittings, please leave a message to me.
Product Categories : Structural Steel > Round Bar
Home > Products > Structural Steel > Round Bar > 4340 Alloy round Steel Bar
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Email:sales@cnmetalsupply.com
Address:Building 10, contemporary core, development zone, Liaocheng, Shandong
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