What material is 4130 steel pipe

 The 4130 grade is a kind of die steel. The molybdenum and chromium elements contained in the 4130 seamless pipe make the 4130 seamless pipe have excellent mechanical properties and corrosion resistance comparable to stainless steel. The carbon content of 4130 steel pipe is low, which is convenient for welding into large-diameter pipes to meet more industry needs. If the 4130 pipe is seamless, it is more resistant to pressure and can overcome various industrial pressures in use.

4130 is usually used in a quenched and tempered state. In the machinery manufacturing industry, it is mainly used to manufacture quenched and tempered parts with large cross-sections that work under high stress conditions, such as shafts, spindles, and high-load steering wheels, bolts, stud bolts, gears, etc.; used in the chemical industry It is used to manufacture welded parts, welded structures composed of plates and pipes, and high-pressure conduits whose working temperature does not exceed 250 °C in a medium containing nitrogen and hydrogen; in steam turbine and boiler manufacturing, it is used to manufacture fasteners that work below 450 °C, 500 Flanges subjected to high pressure below ℃ and beams used in the manufacture of automobiles and off-road vehicles.

Chemical Element Content
Carbon C: 0.28～0.33
Silicon Si: 0.15～0.35
Manganese Mn: 0.40～0.60
Sulfur S: allowable residual content ≤ 0.040
Phosphorus P: allowable residual content ≤ 0.035
Chromium Cr: 0.80～1.10
Nickel Ni: allowable residual content ≤ 0.030
Copper Cu: allowable residual content ≤ 0.030
Molybdenum Mo: 0.15～0.25

Mechanical Properties Reference
Tensile strength σb(MPa): ≥930(95)
Yield strength σs(MPa): ≥785(80)
Elongation δ5 (%): ≥12
Section shrinkage ψ(%): ≥50
Impact energy Akv(J): ≥63
Impact toughness value αkv (J/cm2): ≥78 (8)
Hardness: ≤229HB
Sample size: sample blank size is 25mm
Heat treatment specification: quenching at 880℃, water cooling and oil cooling; tempering at 540℃, water cooling and oil cooling.

The main factors affecting the price of 4130 steel pipes are imported and domestic, specifications and quantities. This has a great impact on the price, as well as factors such as transportation distance, processing requirements, and settlement methods. If you want to know the latest price, please send your request to Our mailbox, or contact us online to get it.


From:http://boilersteelpipe.com/pro/smls/what-material-is-4130-steel-pipe.html

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