ASTM A860 WPHY 65 carbon steel pipe fittings are designed to deliver exceptional strength, durability, and corrosion resistance in high-pressure applications. The "WPHY" designation stands for Wrought Pipe High Yield, emphasizing their superior yield strength, making them ideal for demanding environments such as oil and gas pipelines, chemical processing plants, and power generation systems.

ASTM A860 WPHY 65 fittings undergo rigorous quality control, including hydrostatic testing to ensure safety and reliability. Whether used in offshore platforms or refinery pipelines, these fittings are a trusted solution for achieving long-term efficiency and safety in critical infrastructure projects.

Key Features:

• High Yield Strength: Designed for applications requiring a minimum yield strength of 65,000 psi, ensuring superior durability under high pressure.
• Excellent Toughness: Enhanced toughness and impact resistance through controlled heat treatment, suitable for extreme temperatures and demanding environments.
• Corrosion Resistance: Resilient to wear, chemical exposure, and environmental corrosion, ensuring long-term reliability in harsh conditions.
• Versatile Design: Available in various configurations, including elbows, tees, reducers, and caps, for seamless adaptability in complex piping systems.
• Compliance with International Standards: Meets specifications like ASTM A860, MSS SP-75, and ASME B16.9, ensuring quality, safety, and compatibility.
• Precision Manufacturing: Produced using advanced techniques for superior dimensional accuracy and a smooth finish.
• Rigorous Testing: Subjected to non-destructive testing, including hydrostatic and ultrasonic examinations, to guarantee performance and safety.
• Wide Range of Applications: Ideal for use in oil & gas pipelines, petrochemical plants, power generation systems, and offshore platforms.
• Customizable Options: Available in multiple sizes, wall thicknesses, and end types to suit specific project requirements.
• Longevity: Designed to withstand high-pressure operations, reducing maintenance and operational downtime.

Element	Maximum %
Carbon (C)	0.2
Manganese (Mn)	1.45
Phosphorus (P)	0.03
Sulfur (S)	0.01
Silicon (Si)	0.4
Nickel (Ni)	0.5
Chromium (Cr)	0.3
Molybdenum (Mo)	0.25
Copper (Cu)	0.35
Titanium (Ti)	0.05
Vanadium (V)	0.1
Columbium (Cb)	0.04
Vanadium + Columbium	0.12
Aluminum (Al)	0.06

Property	Minimum Value
Yield Strength (ksi)	65
Tensile Strength (ksi)	77-102
Elongation (%)	20
Charpy V-notch Impact (ft-lb)	30/25

Property	Value
Yield Strength	≥ 65,000 psi (450 MPa)
Tensile Strength	77,000 - 95,000 psi (530 - 655 MPa)
Elongation	20% (min)
Density	7.85 g/cm³
Hardness (Brinell)	≤ 197 HB
Impact Toughness	27 J (min) at -46°C (-50°F)
Melting Point	Approx. 1425-1540°C (2600-2800°F)

• Oil and Gas: Pipelines, refineries, and offshore platforms
• Power Generation: Power plants and steam systems
• Chemical Processing: Chemical plants and refineries
• Construction: Structural components and bridges

Required Heat Treatment Process:

• The heat treatment required for ASTM A860 WPHY 65 pipe is typically normalizing or normalizing and tempering, depending on the material's thickness and the manufacturer’s specific procedures.

Normalizing:

• Temperature Range: The pipe is heated to a temperature between 1,650°F and 1,700°F (899°C to 927°C), which is above the upper critical temperature range of the steel.
• The steel is held at this temperature for a period long enough to allow for uniform temperature distribution and to achieve the desired metallurgical structure.
• The pipe is then cooled in air to room temperature.

Normalizing and Tempering (if required):

• In some cases, the material may also undergo tempering, which involves heating the steel to a lower temperature (typically around 1,100°F to 1,300°F (593°C to 704°C)) after normalizing. This process is done to improve toughness and reduce brittleness, especially for thicker sections.
• The tempering process is followed by air cooling or furnace cooling.

Mechanical Properties After Heat Treatment

After heat treatment, ASTM A860 WPHY 65 should meet the following mechanical properties:

• Yield Strength: 65,000 psi (450 MPa) minimum
• Tensile Strength: Between 75,000 psi (517 MPa) and 90,000 psi (621 MPa)
• Elongation: 18% minimum in 8 inches (200 mm)
• Impact Toughness (if required): Meets specific Charpy V-notch impact requirements at low temperatures, typically at -50°F (-46°C) or lower, depending on project specifications.

Test Pressure:

• The pipe must be tested at a pressure that is 1.5 times the specified minimum yield strength (SMYS) of the material.
• For WPHY 65, the minimum yield strength is 65,000 psi (450 MPa), so the test pressure should be 1.5 × 65,000 = 97,500 psi (672.5 MPa).

Duration:

• The pipe is typically subjected to the test pressure for a period ranging from 5 to 10 minutes, depending on the size of the pipe and specific requirements from the client or regulatory standards.