The exceptional quality, perfect belief and endless pursuit make our 4140 Hollow Bar, 1.4462 Super duplex stainless steel sheet, 52100 Bearing Steel Wire Rod a solid and complete force in the marketplace. We are likely to be content to offer you a quotation up on receipt of your detailed needs. With advanced management concepts, scientific and systematic management methods, flexible operating mechanisms, and continuous technological innovation, we strive to give full play to our advantages and work hand in hand with colleagues from all walks of life to provide our customers with a full range of quality services. Our business is focusing on customer, quality, and service, so that we are dedicated to providing all customers with efficient products and caring services. In case you are on the lookout for a high quality, quick delivery, very best after support and great value supplier in China for long-term small business connection, we'll be your best choice.
4340 round bar
Refer to corresponding steel
GB steel code: 40CrNiMoA, DIN steel code: 36CrNiMo4, DIN material code: 1.6511, French NF standard 40NCD3, Japanese JIS standard SNCM439, British BS standard 816M40, American AISI/ASTM4340, American UNS standard 4340
Has high strength, toughness and excellent hardenability and anti - overheating stability, but high white point sensitivity, temper brittleness. Poor weldability, before welding need to be preheated by high temperature, after welding need to eliminate stress, after adjusting the use of quality.
Production
In addition, 4340 steel is a wear-resistant material with exceptionally good wear resistance, impact resistance and impact resistance, as well as excellent atmospheric corrosion resistance. The alloy also has very good ductility, especially in the annealing state, it can be easily molded and machined.
Mainly because of its toughness, steel 4340 can be used in heavy machinery, especially in the manufacture of transmission parts such as heavy duty shafts, gears and axles.
Production
Other uses include military industry - for ground vehicles and military aircraft, commercial aircraft industry (landing gear), various automotive uses, rocket engine casings, pressure vessels, fasteners, ordnance hardware, etc.
Production
Product name:
4340 40CRNIMO round rod, 40CRNIMO alloy structural steel is also a kind of gear steel.
The standard is listed below
USA ASTM4340
China 40CRNIMO
Germany 1.6580 steel bar
Hot rolled bar
Forged steel bar
Our advantage:
(1) Professional: We are a professional steel manufacturer and seller. We have our own core factory and provide you with mature and quality products based on many years of steel forging experience.
(2) Thoughtful service: We have a professional international trade team, which is responsible for docking international trade affairs and tracking the production progress of orders. Timely and thoughtful docking service
(3) High product quality: Strictly adopt raw materials that comply with product standards and pay attention to product details.
(4) Complete product specifications to meet the needs of different customers.
Our Service
Our business aims to operating faithfully, serving to all of our clients, and working in new technology and new machine continuously for Factory Price Hot Rolled Forget Steel Bar SAE 1045 4140 4340 8620 8640 Alloy Steel Round Bars. We've got a really efficient group to deal with inquiries from prospects. We regularly organize employees to go out for study and training to improve our comprehensive market competitiveness.