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AISI 4140 High Tensile Alloy Steel Pipe Tube

Basic Info

Model No.:  AISI 4140

Product Description

Model NO.: AISI 4140 Technique: Hot Rolled Surface Treatment: Polished Section Shape: Round Product Name: AISI 4140 High Tensile Alloy Steel Pipe Tube MOQ: 1 Ton Shipping: by Sea, Air Grade: 30CrMo Application: Boiler Plate Transport Package: Standard Seaworthy Package or as The Customers′ Re Origin: China Type: Seamless Material: Alloy Steel Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose Key Word: Alloy Steel Pipe Certificate: ISO9001:2008 Payment Term: L/C, T/T Delivery Term: Fob, CIF, CFR, Ex-Work, etc. Shape: Round Pipe Trademark: Baosteel Specification: customized sizes Production Description:
1. Steel Grade: AISI 4140
2. Product name: AISI 4140 High Tensile Alloy Steel Pipe Tube
3. Length: 20m maximum 
4. Outside diameter: 21.3mm - 610mm
5. Wall thickness: 1.8 - 22mm

Description :
A prehardened mold steel (311-345 HB / 33-37 HRC) with improved machinability
41X40 is a chromium-manganese-molybdenum grade designed for plastic mold industry. This grade is normally delivered in a prehardened condition at a hardness level of 33/37HRC. The grade has a fully homogeneous martensite-bainite microstructure. 41X40 grade has specific sulfur addition (0.060% typical) in order to increase strongly its machinability. Compared to AISI P20 grade, 30% increase in milling speed and 300% increase in drilling speed can be expected. At constant cutting speed, tool life is multiplied a least by 5 when replacing P20 by 41X40 grade.
41X40 is not suitable for polishing requirements.
This grade is typically used for:
plastic injection molds for thermoplastics
extrusion dies for thermoplastics
compression molds
Chemical analysis
Typical values (weight%).
C S P max Si Mn Cr Mo
0.4 0.060 0.012 0.3 1.5 1.9 0.2
Mechanical properties
Typical values for plates air quenched and tempered (thickness 45 mm - 1.8").
  Hardness YS 0.2 UTS Elongation Reduction
of area
Elastic modulus
  HB MPa ksi MPa ksi % Z% GPa ksi
320 920 133 1075 156 9 40 205 29745
320 900 131 1060 154 8 35 205 29745
Delivery conditions
Typical delivery sizes
Thickness Width
20 - 120 mm
(.79″ - 4.7″)
1500 - 2500 mm
(59 - 98.4″)
120 - 600 mm
(4.7″ - 23.6″)
1500 - 2100 mm
(49″ - 82.7″)

Company Information
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, ilitary, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.

steel coil
Steel Plate
l steel sheet
Steel Bar/rod
    Steel Round Bar
    steel flat bar
    steel square bar
l steel pipe/tube ( welded or seamless )
    steel round pipes
    steel square pipes
    steel welded tubes
    steel seamless tubes
l steel strip
l steel beam
l steel angle
l steel channel
l steel flange
Steel Wire
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and Stainless Steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Pipeline steel
Bridge steel
Nuclear power steel
Structural steel
Die steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can you provide a sample for our testing before confirm the order?
A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.

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