Material

Carbon Steel Forgings for Piping Applications

ASTM A105/A105M specifies a single grade of forged carbon steel for pressure-containing piping components in ambient- and elevated-temperature service. It is the common material specification behind carbon-steel flanges, forged socket-weld and threaded fittings, valve bodies or bonnets, and similar forged parts used in refineries, chemical plants, utilities, and general process piping. The specification controls material manufacture, chemical composition, mechanical properties, heat treatment, testing, repair, and marking. It does not establish component dimensions or pressure-temperature ratings: an A105 flange is normally ordered to ASME B16.5 or ASME B16.47, while A105 forged fittings are normally ordered to ASME B16.11. The finished component must satisfy both its material specification and its applicable dimensional standard. A105 forgings are limited to 10,000 lb (4,540 kg) each. Larger forgings are directed to ASTM A266/A266M. Because the base specification does not require Charpy impact testing, suitability at a low design metal temperature must be checked under the governing construction code; ASTM A350 LF2 is the usual impact-tested alternative when notch toughness is required.

Forged Alloy and Stainless Steel Piping Components

Forged/rolled alloy and stainless components (F11, F22, F91, F304, F316) for flanges, fittings, and valves in high-temperature service.

Carbon Steel Castings for High-Temperature Service (WCB)

Carbon steel castings (WCA, WCB, WCC) suitable for fusion welding, for valve bodies and pressure-containing parts at high temperature.

Wrought Carbon and Alloy Steel Fittings (WPB)

Wrought carbon and alloy steel fittings (WPB, WP11, WP22, WP91) for moderate- and elevated-temperature butt-welding fittings.

Carbon/Low-Alloy Steel Forgings for Low-Temperature (LF2)

Impact-tested carbon and low-alloy steel forgings (LF2, LF3, LF6) requiring notch toughness for low-temperature flanges and fittings.

Wrought Austenitic Stainless Steel Fittings (WP304/WP316)

Wrought austenitic stainless steel butt-welding fittings (WP304, WP316, WP321, WP347) for corrosive and high-temperature service.

Austenitic Stainless Steel Castings (CF8/CF8M)

Austenitic (and duplex) stainless steel castings — CF8 (=304), CF8M (=316), CF3M (=316L) — for valve bodies and pressure-containing parts.

Stainless Steel Plate, Sheet, and Strip

Chromium and chromium-nickel stainless steel plate, sheet, and strip for pressure vessels and general applications; the base material for welded pipe and fabricated components.

Alloy Steel Castings for High-Temperature Service (WC6/WC9/C12A)

Martensitic stainless and alloy steel castings (WC6, WC9, C12A, C5, CA15) for pressure-containing parts in high-temperature service.

Composition Bronze / Ounce Metal Castings

Composition bronze (ounce metal, C83600) castings for valve bodies, fittings, and general-service low-pressure components.

Copper-Nickel Pipe and Tube

Seamless copper-nickel (90/10 = C70600, 70/30 = C71500) pipe and tube for seawater and marine service.

Nickel Alloy Forgings

Nickel and nickel-alloy forgings (Inconel 625/825, Monel 400, Hastelloy, Alloy 20) for corrosive and high-temperature components.

Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service

Material requirements for wrought carbon and alloy steel fittings intended for low-temperature service.

Carbon and Alloy Steel Forgings for High-Pressure Transmission-Service Components

Material requirements for forged flanges, fittings, valves, and parts for high-pressure transmission service.

Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe

Material specification for seamless and welded duplex stainless steel pipe.

Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings

Material requirements for wrought duplex and other stainless steel piping fittings.

Wrought High-Strength Low-Alloy Steel Buttwelding Fittings

Material requirements for high-strength low-alloy steel buttwelding fittings used with high-strength pipeline pipe.

Copper-Nickel and Copper-Nickel-Zinc Alloy Rod and Bar

Material requirements for copper-nickel and related alloy rod and bar used for components and fabrication.

Factory-Made Wrought Nickel and Nickel Alloy Fittings

Material and product requirements for wrought nickel and nickel-alloy fittings.