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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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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
We're committed to providing easy, time-saving and money-saving one-stop purchasing service of consumer for AISI 4140 Alloy Steel Hollow Bar. When you are interested in almost any of our products, be sure to experience cost-free to make contact with us for more facts. We make unremitting efforts for the promotion and popularization of intelligent business to make intelligent interconnectivity and establish a good brand image.