
What is ASTM B163 Seamless condenser tubing?
ASTM B163 seamless condenser tubes are seamless nickel alloy tubes defined by ASTM B163 standard, engineered for condensers and heat transfer equipment. It accepts OD + average wall or OD + minimum wall dimension marking, with OD limited to ≤76.2 mm.
The specification enforces fixed chemical composition, tensile properties and full non-destructive tests for every tube. These tubes maintain stable strength and corrosion resistance under heat exchange working media, delivering consistent thermal transfer performance for power, chemical and marine condenser systems.
Nickel Alloy 600 Tubing Chemical Composition
The superior performance of Inconel 600 Tubes in high-temperature and corrosive environments is directly attributed to their unique nickel-chromium-iron alloy composition.
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
|---|---|---|---|---|---|---|---|---|
| Inconel 600 | 0.15 max | 1.00 max | 0.50 max | 0.015max | 0.50 max | 6.00 – 10.00 | 72.00 min | 14.00 – 17.00 |
Inconel 600 Tube Mechanical Properties
Inconel 600 tubes provide high tensile strength, excellent thermal stability, and outstanding resistance to oxidation and scaling at elevated temperatures. Their superior mechanical and physical properties make them reliable for harsh environments in chemical processing, heat treatment, and aerospace applications.
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|---|
| Inconel 600 | 8.47 g/cm3 | 1413 °C (2580 °F) | Psi – 95,000 , MPa – 655 | Psi – 45,000 , MPa – 310 | 40 % |
Inconel 600 Seamless Tube Equivalent Grades
Inconel 600 tubes are available in globally recognized equivalent grades such as UNS N06600, W.Nr. 2.4816, and DIN NCF 600. These equivalent designations ensure compatibility with international material standards, making them suitable for diverse engineering and industrial applications.
| STANDARD | EN | ASTM | WERKSTOFF NR. | AFNOR | UNS | BS | JIS | GOST |
|---|---|---|---|---|---|---|---|---|
| Inconel 600 | NiCr15Fe | ASTM B167 | 2.4816 | NC15FE11M | N06600 | NA 13 | NCF 600 | МНЖМц 28-2,5-1,5 |

Advantages of Inconel 600 Seamless Condenser Tubes
Corrosion resistance: The 14–16% Cr content forms stable passive film, resisting chloride stress corrosion cracking in condenser circulating water, suitable for long-term marine and chemical cooling media service.
High-temperature stability: Retains over 80% of room-temperature tensile strength at 600°C, maintaining structural integrity under continuous heat exchange thermal cycling.
Consistent thermal conductivity: Thermal conductivity reaches 14.9 W/(m·K) at 20°C, ensuring stable heat transfer efficiency for condenser phase-change cooling processes.
Seam structural reliability: No weld seam, eliminates weld corrosion weak points; meets ASTM B163 NDT requirements to reduce leakage risk in closed cooling loops.
Inconel 600 Seamless Tube Sizes
This table provides standard size ranges of Inconel 600 seamless tubes, including OD, wall thickness, and length options used across industries.
| Wall | Sizes ( O.D.) |
|---|---|
| .010 | 1/16" , 1/8" , 3/16" |
| .020 | 1/16" , 1/8" , 3/16" , 1/4" , 5/16" , 3/8" |
| .012 | 1/8" |
| .016 | 1/8" , 3/16" |
| .028 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 3/4" , 1" , 1 1/2" , 2" |
| .035 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 7/16" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .049 | 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/8" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .065 | 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 3/4" , 2" , 2 1/2" , 3" |
| .083 | 1/4" , 3/8" , 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 7/8" , 2" , 2 1/2" ,3" |
| .095 | 1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2" |
| .109 | 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2" |
| .120 | 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 2" , 2 1/4" , 2 1/2" , 3" |
| .125 | 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4" |
| .134 | 1" |
| .250 | 3" |
| .375 | 3 1/2" |
Pressure Rating of Nickel Alloy 600 Tubing
The following table outlines the pressure ratings of Nickel Alloy 600 tubing based on grade, OD, wall thickness, and manufacturing condition.
| Grade | Maximum internal pressure, ksi | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 100°F | 200°F | 300°F | 400°F | 500°F | 600°F | 700°F | Comments | |||
| N06600 :1 | 8.02 | 8.02 | 8.02 | 8.02 | 8.02 | 8.02 | 8.02 | B167 OD>5" and hotworked | ||
| N06600 :2 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | B167 OD<=5" and hotworked + OD>5" and coldworked | ||
| N06600 :3 | 11.19 | 11.19 | 11.19 | 11.19 | 11.19 | 11.19 | 11.19 | B167 OD<=5" and coldworked | ||
Inconel 600 Tubes Wall Thickness
This table details the available wall thickness ranges of Inconel 600 tubes to suit high-temperature and high-pressure applications.
| Types of Inconel 600 Tube | Out diameter (OD) | Wall thickness | Length |
|---|---|---|---|
| NB Sizes (in stock) | 1/8" ~ 8" | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | Upto 6 Meters |
| Inconel 600 Seamless Tube (Custom Sizes) | 5.0mm ~ 203.2mm | As per requirement | Upto 6 Meters |
ASTM B163 Alloy 600 Tube Tolerances
The table below specifies dimensional tolerances for ASTM B163 Inconel 600 tubes, ensuring compliance with international quality standards.
| OD (inch) | WT (inch) | O.D. +/- (inch) |
|---|---|---|
| 3-1/2" - 5" incl. | Over .165 - .220 | .025 |
| .083 - .165 | .020 | |
| 2" - 2-1/2" incl. | .032 - .065 | .012 |
| Over .109 - .165 | .014 | |
| Over .065 - .109 | .013 | |
| 1/2" - 1" incl. | Over .065 - .134 | .010 |
| .025 - .065 | .005 | |
| 1 - 1-1/2" incl. | Over .065 - .134 | .010 |
| .025 - .065 | .008 | |
| 1-1/2" - 2" incl. | .025 - .049 | .010 |
| Over .083 - .148 | .012 | |
| Over .049 - .083 | .011 | |
| 2-1/2" - 3-1/2" incl. | Over .165 - .220 | .020 |
| .032 - .165 | .014 |
Typical Applications of Alloy 600 Seamless Condenser Tubing
Petrochemical process condensers: Handles vapor condensation for hydrocarbon and acidic process streams, maintains stable performance under continuous thermal cycling.
Offshore marine cooling condensers: Serves seawater cooling loops on platforms, withstands salt medium corrosion for condensate recovery systems.
Industrial waste heat recovery condensers: Recovers heat from high-temperature flue gas condensate, suited for elevated-temperature heat exchange service.
Refinery condensation units: Condenses process vapors in refining loops, reduces corrosion failure risk under mixed corrosive media.




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✅ Since 2008, we have exported alloy materials to clients across Asia, Europe and other regions globally
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Our nickel-based alloy products adopt industrial anti-corrosion packaging for overseas shipment:
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FAQ:
What are the key differences between Inconel 600 and Inconel 750?
Inconel 600 and Inconel X-750 (often referred to simply as Inconel 750) are both nickel-chromium superalloys, but they differ fundamentally in how they are strengthened, their chemical composition, and their ideal industrial applications.
Is Inconel stronger than stainless steel?
Yes, Inconel is generally stronger than stainless steel, especially at high temperatures and under extreme stress.
What is the maximum temperature that Inconel 600 can withstand?
Inconel 600 can withstand continuous service temperatures up to 2,000°F (1,093°C) in oxidizing atmospheres, and up to 2,100°F (1,149°C) in reducing or neutral atmospheres.
What are the key differences between Inconel 600 and 601?
Inconel 600 and Inconel 601 are both nickel-chromium-iron superalloys, but Inconel 601 contains higher chromium and added aluminum to deliver superior high-temperature oxidation and thermal-cycling resistance, whereas Inconel 600 has a higher nickel content that provides broader general and chloride-ion stress-corrosion resistance.

