Home > Products > Steel Pipe Fittings > Carbon Steel Pipe Fittings

Products

ASTM A860 Wrought Steel BW Fittings

We can provide ASTM A860 wrought steel BW fittings. These fittings are for use in high-pressure gas and oil transmission and distribution systems. Welcome to inquiry and cooperation!

Send Inquiry

Description

ASTM A860 Wrought Steel Butt-Welding Fittings

ASTM A860 Specification cover wrought high-strength ferritic steel butt-welding fittings of seamless and electric fusion-welded construction. But this does not cover cast-welding fittings or fittings machined from castings. These fittings are for use in high-pressure gas and oil transmission and distribution systems.

Starting materials of ASTM A860 wrought steel BW fittings

Starting materials are consist of plate, sheet, forgings, forging quality bar, and seamless or fusion-welded tubular products with filler metal added.

Heat treatment of ASTM A860 wrought steel BW fittings

All fittings shall be furnished in the heat-treated condition. Fittings formed above the transformation temperature or upon which welding is performed, shall be cooled to below the lower critical temperature prior to heat treatment. Fittings shall subsequently be heat treated by normalizing, quenching, and tempering or stress relieving in accordance with Specification A960/A960M.

Chemical requirements

Element	Composition % max
Carbon	0.2
Manganese	1.00-1.45
Phosphorus	0.030
Sulfur	0.010
Silicon	0.15-0.40
Nickel	0.50
Chromium	0.30
Molybdenum	0.25
Copper	0.35
Titanium	0.05
Vanadium	0.10
Niobium	0.04
Vanadium plus Niobium	0.12
Aluminum	0.06

Mechanical requirements

Grade	Yield strength min	Tensile strength min	Elongation min
WPHY 42	290 MPa	415 MPa	25%
WPHY 46	315 MPa	435 MPa	25%
WPHY 52	360 MPa	455 MPa	25%
WPHY 60	415 MPa	515 MPa	20%
WPHY 65	450 MPa	530 MPa	20%
WPHY 70	485 MPa	550 MPa	20%