4130 Special Alloy Steel Pipe Overview

4130 is actually a tubing specification, but Seamless Pipe is often made to the pipe schedule for many oil and gas applications.  Applications typically involve above-ground applications.

Ordering Information

Required Information for Ordering

Characteristic What to Specify
Quantity Feet or number of lengths
Size NPS (Outside Diameter) and Schedule Number (Average Wall Thickness)
Coating Bare, Black, FBE, etc
Manufacturer Approved Manufacturer List (AML), or Country of Origin restrictions

 

Manufacturing Considerations

The material is then heat treated to L80, P110 or the customer’s specified properties. 

OD Tolerance for hot finished

NPS Tolerance
Up to 2.99" +/- .02"
3" – 4.499" +/- .025"
4.5" – 5.999"  +/- .031"
6" – 7.499" +/- .037"
7.5" – 8.999" +/- .045"
9" – 10.75" +/- .50"

 

Minimum Yield/Tensile

Mechanical Property PSI
Minimum Yield: 35,500 PSI
Minimum Tensile: 60,200 PSI

 

Wall Thickness Tolerance for Hot Finished(+/- % of OD):

NPS Tolerance
Up to 2.999"   12.5% for walls under 15% of the OD 10% for walls over 15% of the OD
3" – 5.999" 10% for walls under 15% of the OD 7.5% for walls over 15% of the OD
6" – 10.75"

10%

10%

Chemical Composition

  C Mn Ph(max) S(max) Si Cr Mo
4130 0.28-.033 0.4-0.6 0.04 0.04 0.15-0.35 0.8-1.1 0.15-0.25

  

MSI offers a large selection of 4130 seamless pipe, welded pipe, buttweld fittings, forged steel fittings, flanges, and tubing.