1. Nickel based alloy Introduction
Description: Incoloy alloys are part of the nickel-iron-chromium family, known for their excellent corrosion resistance in both oxidizing and reducing environments. They are also resistant to stress corrosion cracking, pitting, and crevice corrosion.
Common Variants:
- Incoloy 800: Known for its high strength and resistance to oxidation and carburization in high-temperature environments.
- Incoloy 825: Contains additional elements like molybdenum and copper, enhancing its corrosion resistance against many aggressive environments.
- Incoloy 926: Offers superior corrosion resistance with a high nickel content that provides exceptional resistance to chloride-induced stress corrosion cracking.
Applications: These alloys are widely used in chemical processing, petrochemical applications, nuclear power, and in the extraction of rare metals due to their robust performance in corrosive environments.
Description:Inconel alloys are nickel-chromium-based superalloys noted for their excellent resistance to high temperatures, corrosion, and oxidation. They maintain strength over a wide temperature range, making them suitable for high-temperature applications where aluminum and steel would succumb to creep.
Common Variants:
- Inconel 600: Features high strength and good workability, along with high-temperature and corrosion resistance.
- Inconel 601: Adds aluminum for improved oxidation resistance at high temperatures.
- Inconel 625: Includes molybdenum and niobium, which enhance its strength and corrosion resistance.
- Inconel 718: Known for its high strength and ductility at high temperatures.
- Inconel X-750:Contains titanium and aluminum, providing high strength at temperatures up to 1300°F (704°C).
Applications: Inconel alloys are used in aerospace, chemical processing, power industry equipment, and heat treating equipment.
Description: Hastelloy alloys are high-performance nickel-chromium-molybdenum materials known for their exceptional resistance to severe corrosion environments. They are highly effective in both oxidizing and reducing conditions.
Common Variants:
-Hastelloy C276: Versatile, corrosion-resistant alloy with excellent resistance to strong oxidizers such as ferric and cupric chlorides.
- Hastelloy C22: Provides better overall corrosion resistance compared to other nickel-chromium-molybdenum alloys, including C276, C4, and 625.
- Hastelloy B2 & B3: These alloys have excellent resistance to reducing environments like hydrogen chloride gas and sulfuric, acetic and phosphoric acids.
- Hastelloy C4: Has high temperature stability and is used in environments up to 1040°C.
- Haynes 230 & 188: Provide good high-temperature strength with excellent oxidation resistance.
Applications: Commonly used in chemical processing industries, aviation, and petrochemical sectors, especially where high corrosion resistance is crucial.
Each of these alloys has been developed to meet specific industrial needs, offering tailored properties that contribute significantly to the performance and longevity of applications in harsh environments.
2. Hastelloy C4 Pipe Fittings
HastelloyC-4 is an austenitic low-carbon nickel molybdenum chromium alloy. The main difference between Nicrofer 6616 hMo and other early developed alloys with similar chemical compositions is their low carbon, silicon, iron, and tungsten content. This chemical composition gives it excellent stability at 650-1040 ℃, improving its resistance to intergranular corrosion. Under appropriate manufacturing conditions, it can avoid sensitivity to edge corrosion and corrosion in the heat affected zone of the weld.
The characteristics of HastelloyC-4 are:
Has excellent corrosion resistance to most corrosive media, especially in the reduced state.
Has excellent resistance to local corrosion in halides.
HastelloyC-4 Chemical composition:
| | Ni | Cr | Fe | C | Mn | Si | Mo | Co | Ti | P | S |
| Min | The rest | 14.5 | | | | | 14.0 | | | | |
| Max | 17.5 | 3.0 | 0.009 | 1.0 | 0.05 | 17.0 | 2.0 | 0.7 | 0.02 | 0.01 |
HastelloyC-4 Physical property :
Density: ρ= 8.6g/cm3
Melting temperature range: 1335~1380 ℃
| Temperature ℃ | Specific heat capacity J/Kg K | Thermal conductivity W/m K | Resistivity μΩcm | Elastic modulus KN/mm2 | Coefficient of expansion 10-6/K |
| 0 | 406 | | | | |
| 20 | 408 | 10.1 | 124 | 211 | |
| 93 | | | | | |
| 100 | 426 | 11.4 | 125 | 207 | 10.9 |
| 200 | 448 | 13.2 | 126 | 202 | 11.9 |
| 204 | | | | | |
| 300 | 465 | 15.0 | 127 | 195 | 12.5 |
| 316 | | | | | |
| 400 | 477 | 16.7 | 128 | 188 | 12.9 |
| 427 | | | | | |
| 500 | 490 | 18.4 | 129 | 181 | 13.2 |
| 538 | | | | | |
| 600 | 502 | 20.5 | 132 | 175 | 13.6 |
| 649 | | | | | |
| 700 | 512 | 22.6 | 135 | 168 | 14.0 |
| 760 | | | | | |
| 800 | 522 | 24.8 | 138 | 158 | 14.5 |
| 871 | | | | | |
| 900 | | | | 149 | 15.1 |
| 982 | | | | | |
| 1000 | | | | 138 | 15.9 |
- Specification of pipe fittings
Material Mark :ASTM B366 UNS N06455
Standard : ANSI/ASME B16.9, B16.28, MSS-SP-43.
Size : 1/2''~48''(Seamless);16''~110''(Welded)
Wall Thickness: SCH5-STD-SCH XXS
3. Application area
Our company can produce carbon steel, stainless steel, and alloy steel pipe fittings according to standards such as ASME/ANSI, JIS, DIN, ISO etc. The varieties include equal diameter tees, reducing tees, tees, elbows, cross, concentric reducer, eccentric reducer etc. We provide the very best quality pipe and fittings, prompt delivery and reliable services at competitive prices.
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ASTM B366 Hastelloy C4 45/90/180 Degree Butt Weld Steel Pipe Fittings Bend Elbow UNS N06455 Images
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