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Abstract of A860
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.
This specification covers wrought high-strength low-alloy butt-welding steel fittings of seamless and electric fusion-welded construction for applications in high-pressure gas and oil transmission and distribution systems. Starting materials shall consist of plate, sheet, forgings, forging quality bar, and seamless or fusion-welded tubular products with filler metal added. Materials shall be heat treated by normalizing, quenching, and tempering or stress relieving. Specimens shall conform to required values of chemical composition and mechanical properties, namely: yield strength, tensile strength, elongation, notch toughness, and hardness. This specification does not require hydrostatic testing.
Equal Tee and Reducing Tee
90 Degree Elbow, 45 Degree Elbow, Long Radius Elbow, Short Radius Elbow.
Concentric Reducer and Eccentric Reducer
End Cap, Seamless Cap and Welded Cap
Type A Stub End, Type B Stub End, Type C Stub End.
Chemical Composition
Grade | C | Mn | P | S | Si | Ni | Cr | Mo | Cu | Ti | V | Cb | Al |
A860 WPHY 60 | 0.20 | 1.00-1.45 | 0.03 | 0.01 | 0.15-0.40 | 0.50 | 0.30 | 0.25 | 0.35 | 0.05 | 0.10 | 0.04 | 0.06 |
Mechanical Properties
Mechanical Properties | Tensile (MPa) | Yield (MPa) | Elongation % 2in |
WPHY60 | 515-690 | 415 | 28 |
Production Range
Grade Specification | Carbon Steel: ASTM/ASME A234 WPB / A860 – MSS-SP-75 WPHY 60 |
Type | Seamless / Welded / Fabricated |
Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
Range | ½”NB to 48"NB in Sch 10s, 40s, 80s, 160s, XXS. |
Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
Application