Metinox Overseas is a leading manufacturer and supplier of high-performance ASTM A234 WP5 pipe fittings manufactured under strict adherence to ASME B16.9 parameters. Our WP5 alloy steel fittings (5Cr-0.5Mo nominal composition) are used in high temperature, high pressure refinery applications, chemical processing units and utility boiler piping systems and offer superior structural integrity. This particular grade resists high-temperature sulfidation, hydrogen attack and naphthenic acid corrosion in extreme service conditions. Our WP5 precision-manufactured wrought alloy steel fittings are delivered with a standard Class 1 heat-treatment control (fully annealed or normalized and tempered). This will provide a minimum tensile strength of 415MPa and a minimum yield strength of 205MPa, which is in line with the stringent safety requirements of ASME B31.3 Process Piping codes. All components are supplied with full material traceability, including certified EN 10204 3.1 Mill Test Reports (MTRs) and third-party NDT verification logs.
Request an Instant ASTM A234 WP5 Pipe Fittings Price QuoteTable of Contents
- Specifications of ASTM A234 WP5 Pipe Fittings
- Chemical Composition of ASTM A234 WP5 Pipe Fittings
- ASTM A234 WP5 Pipe Fittings Mechanical Properties
- Different Types of ASTM A234 WP5 Pipe Fittings
- ASTM A234 WP5 Pipe Fittings Size Chart
- Weight Chart of ASTM A234 WP5 Pipe Fittings
- Pressure Rating Chart of ASTM A234 WP5 Pipe Fittings
- Dimension Chart of ASTM A234 WP5 Pipe Fittings
- Application and Industrial Uses
- Related Products
- Frequently Asked Questions
Specifications of ASTM A234 WP5 Pipe Fittings
| Property | Specification Details |
|---|---|
| Specification Formula | ASTM A234 WP5 Pipe Fittings |
| Thickness Range | Sch 20S to Sch 180S |
| Size Tolerance | ½ Inch to 48 Inch |
| Materials Available | Chrome-Molybdenum Alloy Steel (5Cr-0.5Mo), Carbon Steel, Alloy Steel, Stainless Steel, Nickel Alloys, Inconel, Monel, Hastelloy, Titanium, Duplex, Cupro-Nickel |
| Dimensional Format | ASME B16.9, MSS-SP-43 Type A & Type B, ASME B16.28, JIS B2312, JIS B2313 |
| Pressure Rating | Class 150 LBS to Class 2500 LBS |
| Dimensions Standard | EN, JIS, NPT, DIN, ISO |
| Different Types of Fittings | Elbow, Tee, Reducer (Concentric & Eccentric), Cap, Stub End, Bend, Adapter, Wye, Cross |
| Connection Types | Buttweld (BW) / Clamp End / Flange End / Threaded |
| Heat Treatment | Annealed / Normalized and Tempered (Class 1) |
| Testing & Certification | EN 10204 3.1 MTR, PMI, Ultrasonic Testing, Radiography, Hydrostatic Test |
Chemical Composition of ASTM A234 WP5 Pipe Fittings
| Grade Symbol | Carbon (C) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | Molybdenum (Mo) |
|---|---|---|---|---|---|---|---|
| ASTM A234 WP5 | 0.15% Max | 0.30% – 0.60% | 0.50% Max | 0.040% Max | 0.030% Max | 4.00% – 6.00% | 0.45% – 0.65% |
ASTM A234 WP5 Pipe Fittings Mechanical Properties
| Grade & Form Variation | Tensile Strength (Min) | Yield Strength (0.2% Offset, Min) | Elongation (in 2 in. Min) |
|---|---|---|---|
| ASTM A234 WP5 (Class 1) | 415 MPa – 585 MPa (60 ksi – 85 ksi) | 205 MPa (30 ksi) | 20.0% |
Different Types of ASTM A234 WP5 Pipe Fittings
ASTM A234 WP5 Elbow
90° and 45° Long Radius (LR) and Short Radius (SR) elbows in sizes ½" to 48" NB per ASME B16.9.
ASTM A234 WP5 Tee
Equal and reducing tees for branch connections in high-temperature chrome-moly piping systems.
ASTM A234 WP5 Reducer
Concentric and eccentric reducers for pipeline diameter transitions while maintaining flow velocity.
ASTM A234 WP5 End Cap
Hemispherical end caps for sealing pipe ends under high-temperature and high-pressure conditions.
ASTM A234 WP5 Stub End
Lap joint stub ends in Type A and Type B per MSS SP-43 for flanged connections on chrome-moly systems.
ASTM A234 WP5 Cross
Four-way cross fittings for multi-directional distribution in refinery and chemical plant piping headers.
ASTM A234 WP5 Bend
3D, 5D, and custom-radius bends for piping layouts requiring gradual directional changes to minimise pressure drop.
ASTM A234 WP5 180° Return Elbow
Long radius and short radius return elbows for U-bend configurations in furnace coils and heat exchangers.
ASTM A234 WP5 Wye (Y-Fitting)
45° lateral Y-fittings for flow division with minimised turbulence in chrome-moly process lines.
ASTM A234 WP5 Pipe Fittings Size Chart
| O.D. or I.D. Diameter | Equivalent Decimal | Nominal Diameter | Typical Threads (per inch) |
|---|---|---|---|
| 5/16 | 0.313 | 1/16 | 27 |
| 13/32 | 0.405 | 1/8 | 27 |
| 35/64 | 0.540 | 1/4 | 18 |
| 43/64 | 0.675 | 3/8 | 18 |
| 27/32 | 0.840 | 1/2 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 |
| 1-5/16 | 1.315 | 1 | 11-1/2 |
| 1-21/32 | 1.660 | 1-1/4 | 11-1/2 |
| 1-29/32 | 1.900 | 1-1/2 | 11-1/2 |
| 2-3/8 | 2.375 | 2 | 11-1/2 |
| 2-7/8 | 2.875 | 2-1/2 | 8 |
| 3-1/2 | 3.500 | 3 | 8 |
| 4 | 4.000 | 3-1/2 | 8 |
| 4-1/2 | 4.500 | 4 | 8 |
Weight Chart of ASTM A234 WP5 Pipe Fittings
| DN | Sch 10S: 90° Elbow | Sch 10S: 45° Elbow | Sch 10S: Equal Tee | Sch 40S: 90° Elbow | Sch 40S: 45° Elbow | Sch 40S: Equal Tee | Sch 80S: 90° Elbow | Sch 80S: 45° Elbow | Sch 80S: Equal Tee |
|---|---|---|---|---|---|---|---|---|---|
| 8 | 0.02 | 0.01 | 0.03 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 |
| 10 | 0.03 | 0.02 | 0.05 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 |
| 15 | 0.06 | 0.03 | 0.09 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 |
| 20 | 0.07 | 0.03 | 0.13 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 |
| 25 | 0.14 | 0.08 | 0.28 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 |
| 32 | 0.23 | 0.11 | 0.49 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 |
| 40 | 0.30 | 0.17 | 0.68 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 |
| 50 | 0.50 | 0.25 | 0.85 | 0.70 | 0.40 | 1.28 | 0.91 | 0.59 | 1.59 |
| 65 | 0.85 | 0.48 | 1.41 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 |
| 80 | 1.25 | 0.63 | 1.77 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 |
| 90 | 1.70 | 0.75 | 2.67 | 2.83 | 1.42 | 4.08 | 4.00 | 2.00 | 5.44 |
| 100 | 2.10 | 1.08 | 3.46 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 |
| 150 | 5.45 | 2.72 | 8.07 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 |
| 200 | 10.20 | 5.33 | 15.65 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 |
| 250 | 18.15 | 9.75 | 26.46 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 |
| 300 | 25.80 | 13.62 | 39.46 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 |
Pressure Rating Chart of ASME B16.9 ASTM A234 WP5 Pipe Fittings
| Temperature (°F) | Temperature (°C) | Class 150 (psi) | Class 300 — ¼" to 1" (psi) | Class 300 — 1¼" to 2" (psi) | Class 300 — 2½" to 3" (psi) |
|---|---|---|---|---|---|
| -20 to 150 | -29 to 66 | 300 | 2000 | 1500 | 1000 |
| 200 | 93 | 265 | 1785 | 1350 | 910 |
| 250 | 121 | 225 | 1575 | 1200 | 825 |
| 300 | 149 | 185 | 1360 | 1050 | 735 |
| 350 | 177 | 150 | 1150 | 900 | 650 |
| 400 | 204 | — | 935 | 750 | 560 |
| 450 | 232 | — | 725 | 600 | 475 |
| 500 | 260 | — | 510 | 450 | 385 |
| 550 | 288 | — | 300 | 300 | 300 |
Dimension Chart of ASTM A234 WP5 Pipe Fittings
| Nominal NPS (Inch) | Outside Diameter (mm) | 90° LR Center-to-Face | 45° LR Center-to-Face | 180° Return Center-to-Center | Back-to-Face Dimension |
|---|---|---|---|---|---|
| 1/2" | 21.3 mm | 1-1/2" | 5/8" | 2.00" | 1-7/8" |
| 3/4" | 26.7 mm | 1-1/8" | 7/16" | 2-1/4" | 1-11/16" |
| 1" | 33.4 mm | 1-1/2" | 7/8" | 3.00" | 2-3/16" |
| 1-1/2" | 48.3 mm | 2-1/4" | 1-1/8" | 4-1/2" | 3-1/4" |
| 2" | 60.3 mm | 3-00" | 1-3/8" | 6.00" | 4-3/16" |
Application and Industrial Uses of ASTM A234 WP5 Pipe Fittings
- Oil & Gas Industry
- Petrochemical Industry
- Power Generation Industry
- Chemical Processing Industry
- Refineries
- Boiler Manufacturing Industry
- Heat Exchanger Systems
- Fertilizer Industry
- Cement Industry
- Steel & Metallurgical Industry
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Metinox Overseas manufactures and supplies ASTM A234 WP5 chrome-moly pipe fittings — elbows, tees, reducers, caps, stub ends, bends, crosses — in sizes ½" to 48" NB with complete EN 10204 3.1 material traceability, IBR certification, and NABL-accredited test reports. Global delivery. RFQ responded to within 24 hours.
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Frequently Asked Questions
ASTM A234 WP5 pipe fittings are chromium-molybdenum alloy steel fittings used for high-temperature and pressure piping systems.
WP5 is equivalent to ASTM A335 P5 alloy steel, both having similar chromium-molybdenum composition and properties.
It mainly contains carbon, manganese, silicon, chromium (4–6%), and molybdenum (0.45–0.65%).
WP9 has higher chromium content than WP5, offering better corrosion resistance and higher temperature strength.
WP5 is suitable for moderate to high temperatures, typically up to around 600°C.
They are used in industries like power plants, refineries, and chemical plants for high-temperature and pressure piping systems.
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