What is the chemical composition of X42?
The chemical composition of X42 grade shall comply with API 5L standard requirements. Carbon content is generally controlled below 0.28%, manganese content is adjusted within the range of 0.90-1.35% depending on wall thickness, and the content of harmful elements such as sulfur and phosphorus must be strictly controlled. The standard also clearly specifies requirements for carbon equivalent (CEIIW) and PCM values to ensure weldability.
| Grade | Chemical Composition | |||||||
|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | V | Nb | Ti | |
| API 5L X42 | 0.16 | 0.45 | 1.65 | 0.020 | 0.010 | 0.07 | 0.05 | 0.04 |
What is the Mechanical properties of X42?
The mechanical properties of X42 seamless line pipe mainly include yield strength, tensile strength, and elongation. According to API 5L, the yield strength requirement is not less than 290 MPa, the tensile strength requirement is within the range of 415-565 MPa, and the elongation requirement varies depending on the gauge length. The standard also stipulates impact toughness requirements, typically requiring Charpy impact energy to meet specified values at 0°C.
| API 5L Grade | Yield Strength min. (ksi) |
Tensile Strength min. (ksi) |
Yield to Tensile Ratio (max.) |
Elongation min. %1 |
|---|---|---|---|---|
| API 5L X42 | 42 | 60 | 0.93 | 23 |
What is the API 5L X42 Specification
The outer diameter range of X42 seamless line pipe is quite extensive, with common specifications ranging from 1/8 inch to 26 inches. The specific dimensions must be selected based on engineering design requirements. The wall thickness is typically specified according to the size table in API 5L, with common series including standard wall thickness, extra strong wall thickness, and extra heavy wall thickness. The combination of outer diameter and wall thickness determines the pipe's pressure-bearing capacity, which must be calculated based on parameters such as conveying pressure and burial conditions.
The single length of X42 seamless line pipe is usually 6-12 meters, but it can also be cut-to-length produced according to customer requirements. The determination of length needs to consider transportation restrictions, site construction conditions, and welding efficiency, among other factors. API standard has clear regulations on the allowable deviation of length, generally requiring that the length deviation does not exceed +100mm/-0mm.
| Sizes in Stock | 1/2" to 60" |
|---|---|
| Coatings | 3PE, FBE, Black, Varnished |
| Length | 6 to 12 m |
| MTC types | EN 10204 3.1, EN 10240 3.2 |
| Certificates We Offers |
Mill test Certificate ISO DFARS compliant Raw Materials Certificate CNAS Third Party Inspection Report En 10204 Type 3.1/3.2 |
| Readily stock schedule | SCH 10 to 160 |
| Supporting documents |
Origin of material MTC Inspection reports QC Check dimensions |
| Delivery Time |
7-30 days |
API 5L X42 Factory
