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ASTM A860 WPHY60 SCH40 BW B16.9 Steel Pipe Fittings BLACK PAINTING
ASTM A860 WPHY60 is the standard specification for wrought high-strength ferritic steel butt-welding. Yield strength minimum 415 Mpa, Tensile strength 515 Mpa to 690 Mpa. Material used for make such pipe fittings are from seamless or welded steel pipe of API 5L X60, X60M, X60Q etc, used for oil and gas transmissions.
ASTM A860 is the standard specification for wrought high-strength ferritic steel butt-welding fittings of seamless and electric fusion-welded construction. These pipe fittings shall be furnished in accordance with the dimensions of ASME B16.9(for sizes NPS 14 and smaller) or MSS SP 75(for sizes NPS 16 through NPS 48). They can be further categorized into 6 grades: WPHY 42, WPHY 46, WPHY 52, WPHY 60, WPHY 65, WPHY 70. Pipe fittings manufactured to ASTM A860 are usually used with API 5L line pipes and ASTM A694 high-strength forged flanges in high-pressure gas and oil transmission and distribution systems.
ASTM A860 CARBON STEEL PIPE FITTINGS SPECIFICATIONS :
Specifications : ASTM A860 / ASME SA860
Range : ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS.
Variants : Carbon Steel Pipe Fittings
Type : Seamless / Welded / Fabricated.
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Dimensions : ANSI/ASME B16.9, B16.28, MSS-SP-43.
Grades : WPBW, WPHY 42, WPHY 46, WPHY 52, WPHY 60, WPHY 65 & WPHY 70.
| The Chemical Composition of ASTM A860, % | |
| Carbon | ≤0.20*A |
| Manganese | 1.00-1.45 |
| Phosphorus | ≤0.030 |
| Sulfur | ≤0.010 |
| Silicon | 0.15-0.40*B |
| Nickel | ≤0.50*C |
| Chromium | ≤0.30*C |
| Molybdenum | ≤0.25*C |
| Copper | ≤0.35*C |
| Titanium | ≤0.05 |
| Vanadium | ≤0.10 |
| Columbium | ≤0.04 |
| Vanadium plus Columnium | ≤0.12 |
| Aluminum | ≤0.06 |
| The Mechanical Properties of ASTM A860 | |||
| Element | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| WPHY 65 | 515-690 | 415 | 28% |
Material, Manufacture, Heat Treatment & Tests
The high-strength pipe fittings of ASTM A860 shall be made from fully killed fine-grain material made by a melting process that is intended to produce rounded, well dispersed, fine sulphide inclusions, that promote good notch toughness, assists in the resistance to hydrogen induced cracking, and for weldability suitable for field welding. The starting raw material may consist of plate, sheet, forgings, bar, seamless and fusion-welded pipes.
All fittings shall be heat treatment by one of the methods of normalizing, quenching, tempering or stress relieving. The regular tests & inspections mainly include radiographic examination, ultrasonic test, Charpy V-Notch test, hardness test, etc. Especially, butt-weld tees manufactured by cold forming process shall be liquid penetrant or magnetic particle examined.
