Cold Drawn SMLS ASTM B407 UNS N08800 Incoloy800 Pipe and Tube
1.What Is The Difference Between Pipe and Tube?
You have probably heard pipe and tube used interchangeably but are they different. The answer to that question is yes! The biggest difference between pipe and tube is there shape. Pipe will always be round however tube can be round, square or rectangular. Below are several other factors that make pipe and tube different.
When it comes to measurement of pipe, it is measure by the inside diameter, often called the nominal diameter. Nominal Pipe Size (NPS) is a North American set of standard sizes for pipe. The term nominal refers to pipe in non-specific terms and identifies the inside diameter with a non-dimensional number. For example, a 2-inch nominal steel pipe consists of a family of steel pipe with a 2.375″ diameter.
Pipe also has a wall thickness which is referred to by its schedule. The outside of the pipe is always larger than the inside. The difference between the inside diameter (ID) and the outside diameter (OD) is due to the thickness of the wall. Wall thickness also determines the strength of the pipe. Schedule 40 pipe is the most common, however when extra strength is required schedule 80 is available.
Round tubing is specified by its actual outside diameter and is equal to the corresponding size. The thickness of tube is defined by a gauge number. Tube size will keep the same OD no matter what the wall thickness is. Tubing also has a tighter manufacturing tolerances than pipe.
2. ASTM B163 B407 ASME SB163 SB407 N08811 Nickel Alloy Seamless Tubes Pipes Incoloy 800HT Seamless Tubing Chemical composition:
| Alloy | % | Ni | Cr | Fe | C | Mn | Si | Cu | S | Al | Ti |
| | Min. | 30 | 19 | | | | | | | 0.15 | 0.15 |
| Max. | 35 | 23 | balance | 0.10 | 1.5 | 1 | 0.75 | 0.015 | 0.60 | 0.60 |
| | Min. | 30 | 19 | | 0.05 | | | | | 0.15 | 0.15 |
| Max. | 35 | 23 | balance | 0.10 | 1.5 | 1 | 0.75 | 0.015 | 0.60 | 0.60 |
| | Min. | 30 | 19 | | 0.06 | | | | | 0.15 | 0.15 |
| Max. | 35 | 23 | balance | 0.10 | 1.5 | 1 | 0.75 | 0.015 | 0.60 | 0.60 |
| AI+Ti: 0.85-1.20 |
3.ASTM B163 B407 ASME SB163 SB407 N08811 EN 10216-5 1.4959 1.4876 Nickel Alloy Seamless Tube Pipe Incoloy 800HT Seamless Tubing is an austenitic nickel-iron-chromium alloy Characteristic as below:
- Excellent corrosion resistance in the water media of the extremely high temperature of 500℃.
- Good stress corrosion resistance
- Good machining
- High creep strength
- Very good resistance to oxidation
- Good resistance to combustion gases
- Very good resistance to carburization
- Good resistance to nitrogen absorption
- Good structural stability at high temperatures
- Good weldability
4.Inconel Seamles Tubes Surface Finish
| Surface Finish | Internal Surface(ID) | Exterbal Surface(OD) |
| Roughness Average(RA) | Roughness Average(RA) |
| μ inch | μm | μ inch | μm |
| EP | Electro Polish | 15,10,7,5 | 0.38,0.25,0.20;0.13 | 32 | 0.8 |
| AP | Annealed & Pickled | Not defined | Not defined | 40 or Not defined | 1.0 or Not defined |
| MP | Mechanical Polish | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
| BA | Beight Annealed | 40,32,25,20 | 1.0,0.8,0.6,0.5 | 32 | 0.8 |
5.Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti | | Alloy 800 | 0.10 max | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 | | Alloy 800H | 0.05 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 | | Alloy 800HT | 0.06 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 | |
6.MECHANICAL PROPERTIES
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 800 / 800H / 800HT | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
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Cold Drawn Inconel Pipe SMLS ASTM B407 UNS N08800 Incoloy 800 Pipe And Tube Images
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