Always customer-oriented, and it's our ultimate goal to get not only by far the most reputable, trustable and honest supplier, but also the partner for AMS 6514 Maraging 300 steel Round Bars, Maraging Steel C300 Round Bars, 21-4N Valve Steel Rods. Over years, we are committed to satisfy our many clients with our advanced technology, mature workmanship, high quality products, competitive price and comprehensive customer service. After years of development and under the support of our customers, our products have been greatly improved from quality to quantity. Because of our company has been persisting in the management idea of 'Survival by Quality, Development by Service, Benefit by Reputation'. We have always been adhering to the business philosophy of 'user-based value support', meticulous service and win-win cooperation.
4140 is a steel with a carbon content of only 0.38% and 0.43%. 4140 has good hardening properties. 4140 steel has round bars, square bars, slabs and hollow tubes. You can order products of any size, shape or quantity from numerous suppliers. 4140 steel is widely used in the manufacture of gears, bearings, machine shafts, rollers and bolts
The standard is listed below
USA ASTM4140
JapanSCM440
Germany 42CRMO4 1.7725 Hollow bar
42CrMo steel belongs to ultra high strength steel, with high strength and toughness, hardenability is also good.
Technical parameters
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Specifications |
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Chemical component |
C ：0.38～0.45% Si：0.17～0.37% Mn：0.50～0.80% S ：≤0.035% P ：≤0.035% Cr：0.90～1.20% Ni：≤0.30% Cu：≤0.30% Mo：0.15～0.25%[ |
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Mechanical property |
Tensile strengthσb/MPa)：≥1080 Yield strength(σs/MPa)：≥930 Elongation (δ5/%)：≥12 |
Usage
4140 is widely used in petroleum, chemical, power station, boiler and other industries, used in the production of reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders , High-pressure water pipes of hydropower stations, turbine turbines and other equipment and components.
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About us
Our company has become a model for the success of peer companies based on the principles of "integrity, professionalism, pragmatism and efficiency" and the business philosophy of "high quality and low price". The company's customers are involved in various industries and have won their praise and trust, forming long-term cooperative relationships. We sincerely welcome friends from all over the world to visit our company.
Product shipping packaging
① Before leaving the factory: check whether the product meets the specifications and the quantity is correct.
② Packaging method: Large wooden squares are used to fix the product position, and each product is wrapped with foamed paper. Prevent the product from being damaged by collision and unnecessary loss during transportation.
③ Mode of transportation: sea transportation, land transportation, railway transportation
Our Service
The advanced technology we have learned and introduced at home and abroad should enable our SAE 4140 Alloy Steel Hollow Bar to achieve considerable economic benefits. Various business resources such as product development, technical capabilities, human resources training, global system, flexible response capabilities, and collaboration with business partners, represented by an independent product manufacturing system, support our company's value creation. If the customer provides their own designs, We will guarantee that they will likely be the only one can have that merchandise.