We emphasize progress and introduce new solutions into the market each year for 4J29 nickel alloy round Bar, Valve Steel Round Bar 21-4N, Maraging Steel bar. Our company is moving forward with time in the direction of a modern enterprise. We are proud we have helped so many of our customers' businesses grow and develop. Our mission is to provide industry-leading service and support to our customers and partners, and never stop pursuing better products with higher value.
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
The quality control of our China Suppliers 4340 50mm Alloy Carbon Steel Round Bar includes the entire process of receiving logistics, warehousing, production process, packaging, delivery, and after-sales. We have built a reliable reputation among many customers. We adhere to the development concept of 'What customers want is what we do', and constantly innovate to meet the needs of the evolving market.