Top brand Construction
Machinery supplier
Guess you like the video
ASTM/ASME SA234A234M,WPB,WPC
Description
ASTM A234/A234M: American Society for Testing and Materials
Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
Scope: These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures.

Chemical Composition
Grade and
Marking
Symbol
Composition, %
Carbon Manganese Phosphorus Sulfur Silicon Columbium Molybdenum Nickel Copper Others
WPB 0.30 0.29–1.06 0.05 0.06 0.10 min 0.40 0.15 max 0.40 0.40 Vanadium 0.08
WPC 0.35 0.29–1.06 0.05 0.06 0.10 min 0.40 0.15 max 0.40 0.40 Vanadium 0.08
WP1 0.28 0.30–0.90 0.05 0.05 0.10–0.50 . . . 0.44–0.65 . . . . . . . . .
WP12 CL1, 0.05–0.20 0.30–0.80 0.05 0.05 0.60 0.80–1.25 0.44–0.65 . . . . . . . . .
WP12 CL2 . . .
WP11 CL1 0.05–0.15 0.30–0.60 0.03 0.03 0.50–1.00 1.00–1.50 0.44–0.65 . . . . . . . . .
WP11 CL2, 0.05–0.20 0.30–0.80 0.04 0.04 0.50–1.00 1.00–1.50 0.44–0.65 . . . . . . . . .
WP11 CL3 . . .
WP22 CL1, 0.05–0.15 0.30–0.60 0.04 0.04 0.50 1.90–2.60 0.87–1.13 . . . . . . . . .
WP22 CL3 . . .
WP24 0.05–0.10 0.30–0.70 0.02 0.01 0.15–0.45 2.20–2.60 0.90–1.10 . . . 0.75–1.25 Aluminum 0.020
Boron 0.0015–0.0070
Nitrogen 0.12
Titanium 0.06–0.10
Vanadium 0.20–0.30
WP5 CL1, 0.15 0.30–0.60 0.04 0.03 0.50 4.0–6.0 0.44–0.65 . . . . . . . . .
WP5 CL3 . . .
WP9 CL1, 0.15 0.30–0.60 0.03 0.03 1.00 8.0–10.0 0.90–1.10 . . . . . . . . .
WP9 CL3
WPR 0.20 0.40–1.06 0.05 0.05 . . . . . . . . . 1.60–2.24 0.75–1.25 . . .
WP91 0.08–0.12 0.30–0.60 0.02 0.01 0.20–0.50 8.0–9.5 0.85–1.05 0.40 . . . Vanadium 0.18–0.25
Columbium 0.06–0.10
Nitrogen 0.03–0.07
Aluminum 0.02F
Titanium 0.01F
Zirconium 0.01F
WP911 0.09–0.13 0.30–0.60 0.02 0.01 0.10–0.50 8.5–9.5 0.90–1.10 0.40 . . . Vanadium 0.18–0.25
Columbium 0.060–0.10
Nitrogen 0.04–0.09
Aluminum 0.02 maxF
Boron 0.0003–0.006
Tungsten 0.90–1.10
Titanium 0.01 maxF
Zirconium 0.01 maxF
WP92 0.07–0.13 0.30–0.60 0.02 0.01 0.50 8.50–9.50 0.30–0.60 0.40 . . . Aluminum 0.02F
Boron 0.001–0.006
Columbium 0.04–0.09
Nitrogen 0.030–0.070
Titanium 0.01
Tungsten 1.50–2.00
Vanadium 0.15–0.25
Zirconium 0.01

Mechanical Properties
Grade and Marking Symbol WPB WPC,
WP11 CL2,
WP12 CL2
WP1 WP11 CL1, WP22 CL1,
WP5 CL1,
WP9 CL1
WPR WP11 CL3, WP22 CL3,
WP5 CL3, WP9 CL3
WP24 WP91 WP92
WP911
WP12 CL1
Tensile strength, minimum unless a range is given ksi [MPa] 60 [415] 70 [485] 55–80 60 [415] 63–88 75 [520] 85 [585] 90 [620] 90–120 60 [415]
[380–550] [435–605] [620–840]
Yield strength, min, ksi [MPa] (0.2 % offset or 0.5 % extension-under-load) 35 [240] 40 [275] 30 [205] 30 [205] 46 [315] 45 [310] 60 [415] 60 [415] 64 [440] 32 [220]
Elongation Requirements
Grades
All Grades except WPR, WP91, and WP911 WPR and WP24 WP91
WP92
WP911
Longi-tudinal Trans-verse Longi-tudinal Trans-verse Longi-tudinal Trans-verse
Elongation:
Standard round specimen, or small proportional specimen, min % in 4 D 22.00 14.00 20.00 20.00 13.00
Rectangular specimen for wall thickness 5⁄16 in. [7.94 mm] and over, and for all small sizes tested in full section; min % in 2 in. [50 mm] 30.00 20.00 28.00
Rectangular specimen for wall thickness less than 5⁄16   in. [7.94 mm]; min % in 2 in. [50 mm] (1⁄2-in. [12.7-mm] wide specimen) B B B
A WPB and WPC fittings manufactured from plate shall have a minimum elongation of 17 %. 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.

Wall Thickness Grades
All Grades except WPR, WP91 and WP911 WPR WP91, WP92, and WP911
in. [mm] Longitudinal Transverse Longitudinal Longitudinal
5⁄16 (0.31) 7.94 30.00 20.00 28.00 20.00
9⁄32 (0.28) 7.14 28.50 19.00 26.50 19.00
1⁄4 (0.25) 6.35 27.00 18.00 25.00 18.00
7⁄32 (0.22) 5.56 25.50 23.50 17.00
3⁄16 (0.19) 4.76 24.00 22.00 16.00
5⁄32 (0.16) 3.97 22.50 20.50 15.00
1⁄8 (0.13) 3.17 21.00 19.00 14.00
3⁄32 (0.09) 2.38 19.50 17.50 13.00
1⁄16 (0.06) 1.59 18.00 16.00 12.00

1.1This specification2 covers wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the latest revision of ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, and MSS-SP-97. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. Fittings differ-ing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specifi-cation A960/A960M.
1.2Optional supplementary requirements are provided for fittings where a greater degree of examination is desired. When desired, one or more of these supplementary requirements may be specified in the order.
1.3This specification does not cover cast welding fittings or fittings machined from castings. Cast steel welding fittings are governed by Specifications A216/A216M and A217/A217M.
TOP
×
Login

Not a member yet? Create an account

I'am a supplier Login
×
Register

Already got an account? Login

Become a supplier Register