Alloy 28 Pipes & Tubes are manufactured using a high performance nickel-iron-chromium-molybdenum alloy designed to offer superior resistance to corrosion, pitting, and sulfuric acid attack that is caused by chlorides. Alloy 28 pipe and Alloy 28 tubing are also commonly used in aggressive chemical and offshore services where other types of stainless and lower nickel alloys fail.
Alloy 28 piping systems are manufactured according to ASTM B668 and associated standards of other countries, which provide them with high levels of mechanical strength, high weldability, and long durability. Alloy 28 Pipes and Tubes find large applications in chemical plants, offshore oil and gas, pulp and paper and desalination plants due to these properties.
Alloy 28 Pipes & Tubes Suppliers & Manufacturer in USA
We are among the reliable Alloy 28 Pipes and tubes supplier and manufacturer in USA, and we have all varieties of seamless and welded Alloy 28 pipes and Alloy 28 tubing in regular and custom sizes. Our products are manufactured according to ASTM B668 and can be used in the conditions of high pressure and high corrosion.
In comparison to such alloys as 316L and duplex stainless steels, Alloy 28 delivers much better crevice corrosion, chloride stress corrosion cracking and acidic media resistance leading to longer service life and lower maintenance expenses.
Contact us today to receive the latest Alloy 28 pipe price and delivery schedule.
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Specification of ASTM B668 Alloy 28 Seamless Pipes And Tubes
| Parameter | Details |
|---|---|
| Specification | ASTM B668 / ASME SB668; EN 10216-5; SEW 400 (Feb 1991); SS 14 25 84; NFA 49-217 |
| Alloy 28 Pipe Size | 1/8” NB to 24” NB, 1/4” OD to 24” OD |
| Alloy 28 Tube Size | 1/2” OD to 8” OD |
| Thickness Range | 0.3 mm – 50 mm |
| Schedules | SCH 5, SCH 10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XS, SCH XXS |
| Type | Seamless / ERW / Welded / Fabricated Pipes |
| Form | Round, Square, Rectangular, Oval, Hydraulic, etc. |
| Length | Single Random, Double Random, Required Length |
| End | Plain End, Beveled End, Threaded |
| End Protection | Plastic Caps |
| Outside Diameter | 6.00 mm OD to 914.4 mm OD (up to 24” NB available ex-stock) |
| Inspection & Test Reports | MTC (EN 10204 3.1), Chemical & Mechanical Reports, PMI, Visual Inspection, Third-Party Inspection, NABL Approved Lab Reports, Destructive & Non-Destructive Test Reports |
| Packing | Wooden Boxes, Plastic Bags, Steel Strip Bundles, or as per Customer Requirement |
| Specials | Custom sizes and specifications available on request |
Chemical Composition of Alloy 28 Pipes and Tubes
| Grade | C (%) | Si ≤ (%) | Mn ≤ (%) | P ≤ (%) | S ≤ (%) | Cr (%) | Mo (%) | Ni (%) | N (%) | Cu (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| Alloy 28 | ≤ 0.02 | 0.70 | 2.00 | 0.03 | 0.01 | 26.0 – 28.0 | 3.00 – 4.00 | 30.0 – 32.0 | ≤ 0.11 | 0.70 – 1.50 |
Mechanical Properties of Alloy 28 Tubing
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 500 – 750 N/mm² |
| 0.2% Yield Strength (Rp) | ≥ 220 N/mm² |
| Elongation (A5) | ≥ 35% / 30% |
| Hardness | ≤ 230 HB |
| Modulus of Elasticity | 195 kN/mm² |
Alloy 28 (UNS N08028) is specifically engineered for severe chloride-bearing and acidic environments. Compared to standard stainless steels and duplex grades, ASTM B668 Alloy 28 seamless pipes and tubes provide superior resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, making them ideal for long-term service in offshore, chemical processing, and aggressive industrial applications.
Alloy 28 Pipes and Tubes Equivalent Grades
| Standard | Werkstoff Nr. | UNS | EN |
|---|---|---|---|
| Alloy 28® | 1.4563 | N08028 | X1NiCrMoCuN31-27-4 |
Alloy 28 Pipes and Tubes Equivalent Grades
Alloy 28 Pipes & Tubes Applications
Our Alloy 28 Pipes & Tubes are used in a wide range of applications and various industries. Below are a few of them:
- Petrochemical Industry
- Oil and Gas Industry
- Chemical Industry
- Power Plant Industry
- Energy Industry
- Pharmaceuticals Industry
- Pulp & Paper Industry
- Food Processing Industry
- Aerospace Industry
- Refining Industry
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