In response to the policy call, our production processes of Free Cutting Steel Bar, 4340 Alloy Steel Bar, O2 Mould Steel Bar all reflect the awareness of energy conservation and environmental protection, and the use of resources is reducing. With our excellent administration, strong technical capability and strict excellent control method, we carry on to offer our clients with responsible good quality, reasonable costs and great companies. We are highly innovative and innovative development ideas and constantly improve the international scientific management standards to meet the needs of customers.
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
We will continue to deepen cooperation, innovate and develop more high-quality Forged Alloy Steel Bar with 1045 4140 4340 8620 8640. At present, we have a large customer group and a high market share and enjoying a high reputation in the industry. 'Quality', 'honesty' and 'service' is our principle.