ASTM A860 WPHY42 WPHY52 WPHY60 High-Strength Carbon Steel Butt Weld Tee Fittings
WPHY 42 is a high-strength low-alloy (HSLA) pipe fitting material designed for demanding pipeline systems, particularly in oil and gas applications. Manufactured to MSS SP-75 specifications for wrought, high-strength butt-welding fittings, these materials are engineered to meet rigorous mechanical property requirements.
| Element | Composition Range (Weight %) |
|---|---|
| Carbon (C) | Up to 0.26% max |
| Manganese (Mn) | 0.87–1.35% |
| Phosphorus (P) | 0.035% max |
| Sulfur (S) | 0.035% max |
| Silicon (Si) | 0.13–0.45% |
| Microalloying Elements (V, Cb/Nb, Ti) | Small amounts (typically below 0.1–0.2%) |
- Performance-Based Specification: WPHY 42 is defined by minimum yield strength (42 ksi / 290 MPa), tensile strength, and impact toughness requirements rather than fixed chemical composition
- Manufacturing Flexibility: Steel producers can adjust alloying elements within allowable limits to achieve required mechanical properties
- Variable Composition: Chemical composition may differ between manufacturers and specification revisions
Critical Note: For welding procedure qualification, corrosion analysis, or material compatibility assessments, always refer to the specific heat's Mill Test Report (MTR) / Material Test Certificate (MTC). This document provides the actual measured chemical composition for your specific material batch.
Basic Material Selection: The typical composition ranges provided are sufficient for general materials selection and specification purposes.
Advanced Engineering Applications: For WPS/PQR development, FEA with temperature-dependent properties, or detailed corrosion behavior analysis, obtain exact chemistry data from the supplier's MTR and consult the latest MSS SP-75 standard along with any applicable client or company specifications.
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