ASTM B535 Seamless UNS N08330, N08332 Alloy Pipe and Tube
- Grade: UNS N08330, UNS N08332
- Outside Diameter (OD): NPS 1/8″ -30″
- Wall Thickness (WT) : SCH 5S, 10S, 40S, 80S
Features
ASTM B535 (UNS N08330 and N08332) Nickel Alloy Seamless Pipe and Tube
Chemical Composition (wt.%)
| Element | Composition Limits % | UNS N08330 | UNS N08332 |
|---|---|---|---|
| Carbon (C) | Alloy UNS N08330: 0.08 max Alloy UNS N08332: 0.05 to 0.10 |
0.08 max | 0.05 to 0.10 |
| Manganese (Mn) | 2.00 max | 2.00 max | 2.00 max |
| Phosphorus (P) | 0.03 max | 0.03 max | 0.03 max |
| Sulfur (S) | 0.03 max | 0.03 max | 0.03 max |
| Silicon (Si) | 0.75–1.50 | 0.75–1.50 | 0.75–1.50 |
| Chromium (Cr) | 17.0–20.0 | 17.0–20.0 | 17.0–20.0 |
| Nickel (Ni) | 34.0–37.0 | 34.0–37.0 | 34.0–37.0 |
| Copper (Cu) | 1.00 max | 1.00 max | 1.00 max |
| Lead (Pb) | 0.005 max | 0.005 max | 0.005 max |
| Tin (Sn) | 0.025 max | 0.025 max | 0.025 max |
| Iron (Fe) | Remainder | Remainder | Remainder |
Mechanical Properties
| Alloy | Condition | Tensile Strength (min) | Yield Strength (0.2% Offset, min) | Elongation (min) | Hardness |
| UNS N08330 | Annealed | 70,000 psi (483 MPa) | 30,000 psi (207 MPa) | 30% | 70 to 90 HRB |
| UNS N08332 | Annealed | 67,000 psi (462 MPa) | 27,000 psi (186 MPa) | 30% | 65 to 88 HRB |
Permissible Variations in Outside Diameter for Hot-Finished and Cold-Finished Pipe
| Nominal Pipe Size | Permissible Variations in Outside Diameter | Over | Under |
| 1/8 to 1 1/2 incl | 1/64 in. (0.4 mm) | 1/32 in. (0.8 mm) | |
| Over 1 1/2 to 4 incl | 1/32 in. (0.8 mm) | 1/32 in. (0.8 mm) | |
| Over 4 to 8 incl | 1/16 in. (1.6 mm) | 1/32 in. (0.8 mm) | |
| Over 8 to 18 incl | 3/32 in. (2.4 mm) | 1/32 in. (0.8 mm) | |
Technical Specifications
| Specification | Value |
| Standard | ASTM B535 Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and N08332) Seamless Pipe and Tube |
| Grade | UNS N08330 (Incoloy 330, Alloy 330, RA 330, EN 1.4886), UNS N08332 |
| Manufacturing Process | Hot-finished or Cold-finished |
| Seam Type | Seamless |
| Pipe Size | Outside Diameter (OD) Range: NPS 1/8″ -18″, Wall Thickness (WT) Range: SCH 5S, 10S, 40S, 80S |
| Length | 6000-12000mm |
| Delivery Condition | Annealed |
| Heat Treatment | Heat Treatment—The material shall be furnished in the annealed condition. The final heat treatment of UNS N08330 shall be 1900°F (1040°C) minimum. The final heat treatment of UNS N08332 shall be 2100°F (1150°C) minimum. |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical analysis, Tensile test, Flattening test, Flaring test, Hydrostatic test, Nondestructive testing (NDT), Intergranular corrosion test, Metallographic examination |
Packing
Both ends are plain or beveled to an angle of 30°+5°/0° as per ANSI B16.25 and equipped with plastic pipe caps or bevel protectors. Small-diameter pipes are packaged in wooden crates, and large-diameter pipes are wrapped in woven bags.
Application
Heat Treating Equipment: These alloys’ high resistance to oxidation and carburization makes them ideal for components in heat-treating equipment, such as baskets, trays, and fixtures, especially where the environment is cyclic between high and low temperatures.
Chemical Processing: Their excellent resistance to a wide range of corrosive environments is beneficial in the chemical processing industry, particularly for piping, heat exchangers, and other equipment used to produce chemicals that may be corrosive or require high-temperature processes.
Power Generation: In power plants, these materials can be used for components like gas turbine parts, boiler fixtures, and other high-temperature parts due to their strength and resistance to thermal cycling.
Thermal Processing: For applications involving direct exposure to combustion gases or high temperatures, such as burners, muffles, and flame shields, UNS N08330 and UNS N08332 pipes are well-suited due to their excellent high-temperature strength and oxidation resistance.
Petrochemical Industries: These alloys are used in petrochemical plants for applications such as crackers and reformers due to their resistance to carburization and thermal cycling.
Industrial Furnaces: The ability to withstand high temperatures and resist scaling makes these alloys suitable for furnace rolls, radiant tubes, and heat treatment furnace components.
Ore Processing: Equipment involved in the high-temperature processing of ores can benefit from using UNS N08330 and UNS N08332 alloys due to their resistance to corrosion and high-temperature deformation.
