AISI 4140 Steel Pipe
AISI 4140 is a chromium molybdenum alloy steel specification widely used in the oil and gas industry. Similar to grade AISI 4130 but with a slightly higher carbon content.
American Iron and Steel Institute (AISI 4140) is a member of the low alloy tool steel family characterized by small quantities of trace elements added to an otherwise simple steel. These trace elements, when compared with more simple steel such as 1040, improves the characteristics of 4140 . However, because 4140 remains relatively simple, it is used in a wider range of applications than more specialized tool steels like the D or S series of steel.
Heat Treatment
AISI 4140 has enough carbon present to allow for adequate heat treatment. Recommended hardening procedures are to bring the steel up to 1,675 degrees Fahrenheit for normalization (removal of stress within the steel). After it cools properly, heat the steel to 1,550 degrees Fahrenheit before quenching it in oil. The toughness of the steel makes machining in its hardened form difficult. However, after annealing the steel at 1,600 degrees followed by a slow cooling, the steel is much softer and far easier to machine. It can then be heat-treated after machining to produce a hard, precise item.
Applications
The lower cost due to simple chemistry coupled with the physical properties also makes it a good choice for axles, shafts and structural components. However, since the steel has a lower carbon content than other steels, it doesn’t harden to the same degree. This makes hard, sharp edges, such as those found in knives, difficult.
Since AISI 4140 is a moderately simple steel with a high degree of toughness and tensile strength, it is useful for machined applications such as gears, bolts and fasteners.
General Scope
One of the most popular alloys for Oil Field applications, a high proportion of which is in Tubular form for downhole tools and accessories.
Size (mm) we can supply:
Hot-rolled: O.D.: 51-508; W.T.:7∼60; L: max 16000
Cold-drawn: O.D.: 10-50; W.T.:2∼10; L: max 16000
Hot-expanded：O.D.: 325-1020; W.T.:6∼50; L: max 12000 and other specifications in accordance with customer requirements.
Packing:
Beveled/black painting/ plastic caps/ in bundles/ steel strips/ wooden protection
Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, Nodestructive Test, Hydrostatic Test.
Surface Treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting, Epoxy & Fbe Coating Painting as requested.
Send product request
Other supplier products
 |
GB Standard Alloy Round Bar | Specifications · Grade: Alloy steel · Standard: AISI, ASTM, BS, DIN, GB, JIS · OD：10-500mm · Thickness: Max:800mm &mid... |
 |
GB Standard Alloy Pipes | GB/T8162 GB/T8163 GB3087 GB6479 GB9948 GB5310 GB/T17396 20G, 20MnG, 25MnG, 15MoG, 12Cr2MoG, 15CrMoG, 12Cr1MoVG, 12Cr2MoWVTiB, 10Cr9Mo1VNb Size (mm... |
 |
Alloy Round Bars | Specifications · Grade: Alloy steel · Standard: AISI, ASTM, BS, DIN, GB, JIS · OD：10-500mm · Thickness: Max:800mm &midd... |
 |
EN10216 Alloy Pipes | for pressure purposes · EN 10216-1 Non-alloy steel tubes with specified room temperature properties · EN 10216-2 Non alloy and alloy... |
 |
ASI 4130 Round BarI | AISI 4130 is a low alloy steel containing molybdenum and chromium as strengthening agents. The carbon content is nominally 0.30% and with this rel... |
Same products
 |
Ferro Silicon | Seller: Anyang Hongshun Industrial Co., Ltd. | Ferrosilicon (FeSi) or ferro silicon is a ferro alloy composed of iron and silicon. Ferrosilicon ... |
 |
Ferro manganese | Seller: Anyang Hongshun Industrial Co., Ltd. | As a professional ferro manganese supplier, we can suppy 65 high carbon ferro manganese, 75 mediu... |
 |
Silicon metal | Seller: Anyang Hongshun Industrial Co., Ltd. | Silicon metal (Si Metal), also known ascrystalline silicon or industrial silicon, is mainly used ... |
 |
Aluminum Rim Scrap For Sale, Aluminum Wheels sale, aluminum scrap supplier, mix aluminum | Seller: Ivory Tai Scrap Co. | At IvoryPharInc.com, our 18-year legacy reflects unparalleled expertise in sourcing and deliverin... |
 |
Rim scrap wheel aluminum for sale, aluminum scrap supplier | Seller: Ivory Globa CH International | At IvoryPharInc.com, we take immense pride in our industry-leading expertise in sourcing and deli... |
