AISI 4340 Alloy Steel Round Bar

AISI 4340 Alloy Steel Round BarApplications: AISI 4340 Alloy Steel Used for manufacture big sized important Quenched-and-Tempered parts which request good toughness and high strength. Such as top load shaft in heavy-duty machinery. AISI 4340 Alloy Steel Used for steam turbine shaft, vane, and heavy-load transmission parts, fastening piece, crankshaft, gears etc. With diameter is biger than 250mm. Description: 1. AISI 4340/GB40CrNiMo/DIN 1.6511 alloy steel round bar2. Hot rolled or forged condition, annealing, black or milled surface3. Hardness: ≤220HBS; 4. Hot rolled technology: EAF+LF+VDForged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface5. Ultrasonic test standard: SPE1921-GR3, CLASS D/D or E/E6. Production leadtime: 7~10 daysCompetitive Advantage: High strength, High tenacityGood hardenabilityHigh resistance to thermal properties. Competitive priceFast production leadtimeAll the material are inspected with 3 times to meet the highly standardsDongGuan 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 ourproducts by wholesales and retail sales, whole plate or strip is available. All our productscan meet the standards of DIN, AISI, JIS and GB, all the material should be inspected theultrasonic, hardness and others strict inspection process before the shipment!