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40cr- JIS:SCr440(H)/SCr440 High Quality Carbon Steel Pipe

  • GB 40Cr AISI/SAE/ASTM:5140 ISO 41Cr4 Carbon Steel Pipe


40Cr steel is a kind of alloy steel for engineering and machinery purpose, and one of the most widely used steel grades.

Product Description

40Cr Carbon steel Pipe application parameters:

Product Name

GB 40Cr AISI/SAE/ASTM:5140 ISO 41Cr4 Carbon Steel Pipe


max 12000mm, Cutting Length: available according to customer's requirement.

Outer Diameter


if you need, please contact us for more.

Wall Thickness




Test Reports of Material & SGS Inspection Available


Hot rolled (HR)  Cold rolled(CR)  Cold Drawn

Thickness Tolerance


Main Grades:

10# 20# 35# 45# 50# 60# Q345B Q345C Q345D Q345E,Q235B Q235R Q355B ST12 ST37 ST52 etc.


1 ton.  Sample order acceptable.

Lead Time

Within 5-20days after receiving deposit.

If in large tons, please contact us for confirmation.

Export packing

Waterproof paper protected, steel strip packed stably, and fixed well.

Standard Export Seaworthy Package.

Suit for all kinds of transportation means;

or as required

40Cr Carbon Steel Chemical Composition:


Composition (%)

Carbon (C)


Silicon (Si)


Manganese (Mn)


Phosphorus (P)


Sulfur (S)


Chromium (Cr)


Nickel (Ni)


Copper (Cu)


Product Description

40cr steel pipe is a round steel with a hollow section and no seams around it. Compared with solid steel such as steel, when the bending and torsional strength is the same, the weight is lighter, and it is an economical section steel.

Medium carbon tempered steel, cold heading die steel. The steel is moderately priced, easy to process, and can obtain certain toughness, plasticity and wear resistance after proper heat treatment. Normalizing can promote the spheroidization of the structure and improve the cutting performance of the hardness less than 160HBS rough. Tempering at a temperature of 550~570°C, the steel has the best comprehensive mechanical properties. The hardenability of this steel is higher than that of 45 steel, and it is suitable for surface hardening such as high frequency quenching and flame quenching.


After 40Cr alloy steel quenching and tempering treatment, it is used to manufacture medium-speed, medium-load parts such as machine gears, shafts, worms, spline shafts, thimble sleeves, etc.

It is one of the most popular steel grades in the industry. After Q+T heat treatment, it usually is used to make parts. Such as the gears of machine tools, shaft, worm, spline shaft and etc. If it is through quenching and tempering; high-frequency quenching, it will be good choice for fittings with high hardness and wear resistance. For example, wheel gear, hard chrome shaft, principal axis, crankshaft, arbor, inlet valve, bolt and etc.


About Us

Foshan Shunbei Ronghang Metal Manufacturing Co., Ltd. established in 2008, specializes in the production of carbon steel, including alloy steel plate, galvanized steel plate, color coated steel coil, cold rolled steel plate.

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