Description

ASTM A234 WP12 CL2 Elbow, A234 WP12 ASME B16.9 Pipe Fittings

ASTM A234/ASME SA234 Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
Material Grade WPB WPC WP1 WP12 CL1 WP12 CL2
WP11 CL3 WP22 CL1 WP22 CL3 WP5 CL1 WP5 CL3
WPR WP91 WP911 WP11 CL1 WP11 CL2
WP9 CL1 WP9 CL3
Product Form
ASME B16.9 Size:1/2"-48" Wall thickness:SCH5S-SCHXXS
ASME B16.28 Size:1/2"-24" Wall thickness:SCH5S-SCHXXS
MSS SP43 Size:1/2"-24" Wall thickness:SCH5S-SCHXXS
MSS SP75 Size:16"-60" Wall thickness:SCH5S-SCHXXS

C&N's ASTM A234 WP12 CL2 Pipe Fittings are chromium-molybdenum alloy steel forged pipe fittings specially designed for high temperature and high pressure service, complying with ASTM A234 WP12 material standard and ASME B16.11 CL2 (Class 2000) pressure class, with pressure capacity up to 5000 psi, and can operate stably for a long period of time in the harsh environment from -29°C to 593°C. Its core composition is chromium (0.8-1.25%) + molybdenum (0.44-0.65%). Its core composition is chromium (0.8-1.25%) + molybdenum (0.44-0.65%), which significantly improves the resistance to high temperature oxidation, hydrogen corrosion and creep performance, suitable for refinery hydrogenation plant, power station boiler steam lines and chemical reactors and other key systems, covering a full range of socket weld/threaded elbows, tees, reducers and other fittings, through the 100% magnetic particle inspection + hardness Our products have passed 100% magnetic particle inspection + hardness testing and ISO 9001/PED certification.

Chemical Properties

Carbon Manganese Phosphorus Sulfur Silicon Chromium Molybdenum
0.05 - 0.20 0.30 – 0.80 0.45 0.45 0.60 0.80 - 1.25 0.44 - 0.65

Mechanical Properties

Tensile strength, min ksi [MPa] Yield strength, min, ksi [MPa] (0.2 % offset)
70 [485] 40 [275]

Elongation

Standard round specimen,
min % in 4 D		 Rectangular specimen for wall
thickness 5/16		 Rectangular specimen for wall thickness
less than 5/16
Longitudinal Transverse Longitudinal Transverse Longitudinal Transverse
22 14 30 20A B B

Note A: WPB and WPC fittings manufactured from plate shall have a minimum elongation of 17 %.

Note B: For each 1/32 in. [0.79 mm] decrease in wall thickness below 5/16 in. [7.94 mm], a deduction of 1.5 % for longitudinal and 1.0 % for transverse from the values shown above is permitted. The following table gives the minimum value for various wall thicknesses.

A234 WP12 Elbow Pipe fittings Dimensions:

Butt-welding fittings, as well as short radius elbows and returns, purchased in accordance with this specification, shall conform to the dimensions and tolerances given in the latest revision of ASME B16.9. Steel socket-welding and threaded fittings purchased in accordance with this specification must meet the size, shape, dimension, and tolerance requirements specified in the latest revision of ASME B16.11, MSS-SP-79, or MSS-SP-83. Swage nipples, bull plugs, and integrally reinforced forged branch outlet fittings purchased in accordance with this specification shall conform to the sizes, shapes, dimensions, and tolerances specified in the latest revision of MSS-SP-95 or MSS-SP-97.

A234 WP12 Elbow Pipe fittings Marking

In accordance with the Standard Marking System for Valves, Fittings, Flanges, and Unions (MSS-SP-25, latest edition), all fittings shall have the prescribed information stamped or otherwise suitably marked on each fitting.

The prescribed information for butt-welding fittings shall include: The manufacturer’s name or trademark; the schedule number or nominal wall thickness designation; the size; the fitting designation; and the heat number or the manufacturer’s heat identification.