Nickel 270 Properties Characteristic and Chemical Composition

Nickel 270/ UNS N02270/ ASTM F3 Properties Characteristic:

Nickel 270/ UNS N02270/ASTM F3/ W-Nr. 2.4050 is a high purity garde of nickel mad by power metallurgy, which has a low base hardness and high ductility. The extreme purity is useful for components of hydrogen thyratrons.

Chemical Composition of Nickel 270 Alloy

Nickel: ≥ 99.9

Copper: ≤0.01

Iron:  ≤0.05

Manganese: ≤0.003

Carbon: ≤0.02

Sulfur: ≤0.003

Titanium: ≤0.005

Magnesium: ≤0.005

Silicon: ≤0.005

Hastelloy G35 alloy Properties characteristic

Hastelloy G35 Alloy Properties characteristic

Hastelloy G35 Alloy Bar for Poland Client

Hastelloy G35 alloy is to provide corrosion resistance to the most difficult phosphoric acid enviroments. G35 alloy is much less susceptible to chloride-induced stress corrosion cracking than the stainless steels and nickel-chromium iron alloys traditionally used in"wet process" phosphoric acid. 

Due to its very high chromium content, G35 is extremely resistant to other oxidizing acids, such as nitric, and mixtures containing nitric acid. It possesses moderate resistance to reducing acids. Due to its appreciable molybdenum content, and unlike other nickel-chromium-molybdenum alloys, it's very resistant to "caustic de-alloying" in hot sodium hydroxide.

Hastelloy G30 alloy Properties characteristic, Heat treatment & Fabrication

Hastelloy G30 alloy:

Hastelloy G30 alloy Seamless pipes 6meter

Properties characteristic:

Hastelloy G30 alloy is a high chromium nickel base alloy shows superior corrosion resistance over most other nickel and iron base alloys in commercial phosphoric acid and many complex environments containing highly oxidizing agents such as nitric acid.

Heat Treatment & Fabrication:

The annealing temperature for HASTELLOY G30 alloy is 1177℃（2150℉),and water quenching is advised(rapid air cooling is feasible with structures thinner than 10mm(0.375in). A hold time at the annealing temperature of 10 to 30 minutes is recommended, depending on the thickness of the structure(thicker structures need the full 30 minutes).

Hastelloy G30 alloy can be hot forged, hot rolled, hot upset, hot extruded, and hot formed. And it can apply in wire, sheet, plate, scrip, bar, Welded pipes& seamless pipes, forged. 

Hastelloy B3/Alloy B3 Property Characteristic, Fabrication & Heat treatment

Hastelloy B3/ Alloy B3 Property Characteristic

B3 alloy Seamless pipe 5.8 meter for England Client

Hastelloy B3 has extremely high resistance to the hydrochloric acid, sulfuric, acetic, formic and phosphotic acids, and other non-oxidizing media. And it has excellent resistance to pitting corrosion, to stress-corrosion cracking and to knife-line and heat-affected zone attack.

Fabrication & Heat treatment for Hastelloy B3

Wrought products of B3 alloy are supplied in the Mill Annealed condition, unless otherwise specified. This solution annealing procedure has been designed to optimize the alloy's corrosion resistance and ductility. Following all hot forming operations, the material should be re-annealed, to restore optimum properties. The alloy should also be re-annealed after any cold forming operations that result in an outer fiber elongation of 7% or more. The annealing temperature for b3 alloy is 1066℃（1950℉），and water quenching is advised(rapid air cooling is feasible with structures thinner than 10mm(0.375in.). A hold time at the annealing temperature of 10 to 30 minutes is recommended, depending on the thickness of the structure(thicker structures need the full 30 minutes).

Hastelloy b3 can be hot forged, hot rolled, hot upset, hot extruded, and hot formed. The B3 alloy more sensitive to strain and strain rates than the austenitic stainless steels, and the hot working temperature range is quite narrow. The alloy is stiffer than most austenitic stainless steels, and more energy is required during cold forming. Also, the hastelloy b3 work hardens more readily than most austenitic stainless steels, and may require several stages of cold work, with intermediate anneals.

Hastelloy B2/ Alloy B2 Fabrication and Heat treatment, Corrosion Resistance

Alloy B2 

Alloy B2 Seamless pipe 6m*4in. for Poland Client

Alloy B2 Fabrication and Heat treatment:

Welding Alloy B2 can be performed by TIG, MIG as well as coated electrode. Dissmilar metal welding alloy b2 to alloy b3 is possible using AWS ERNiMo-10 for GTAW and GMAW operations and ENiMo-10 for SMAW welding. The work piece should be thoroughly cleaned with acetone or other suitable cleaners to insure that all contaminants and markings are removed. Grinding prior to welding can be performed with a clean alumina-wheel that has not been previously used on any iron-based materials. There is no need for pre or post heat treatment processes unless the work piece has been formed by any means. A full solution anneal before welding is required on pieces that have been formed. Cold-formed pieces must be shot-peened before annealing.

Hot working should be performed in a temperature range between 1700℉ to 2250℉ with heavy deformation performed toward the upper end of the range. Reheating of the work piece may be necessary. A full solution anneal should be performed on all hot-worked pieces and any cold-worked pieces with more than 15% deformation followed by a water quench.

Solution annealing of Alloy b2 is performed at 1950℉ for 10 minutes at temperature followed by a water quench. Subject material should be charged into a hot furnace and monitored closely for accurate time at temperature. Contact thermocouples are preferred.

Resistance of Corrosion for Alloy B2:

The high molybdenum content in Alloy b2 gives the alloy excellent resistance to hydrochloric acid over a wide range of concentrations and temperatures.

B2 also shows good resistance to hydrogen chloride, sulfuric acid and phosphoric acids and has excellent resistant to pitting and stress corrosion cracking in the heat-affected zone. Uniform corrosion rates in various environments is very similar compared to the other Ni-Mo alloys such as B3. The presence of any oxidizing media, even in trace amounts, will significantly increase corrosion. B2 should not be used in oxidizing media, as these alloys show little to no resistance in such environments.

Alloy B2/Hastelloy B2/UNS N10665/W.Nr. 2.4617 Properties and application notes

Hastelloy B2 Characteristic Properties and application notes

Alloy B2,Hastelloy B2,UNS N10665, W.Nr. 2.4617 Wire 20m*0.5mm

Hastelloy B2 Properties and Notes:

Hastelloy B2 / UNS N10665/ W.Nr. 2.4617 is a solid solution strengthened, nickel-molybdenum alloy, typically used in extreme reducing conditions. B2 has significantly low carbon, silicon and iron compared to its' predecessor, Alloy B(UNS N10001), making the alloy less susceptible to decreased corrosion resistance in the weld zone, in the as-welded condition. Controlling other alloying elements such as iron and chromium solved other issues concerning fabricability. Stringent chemistry control along with years of development has resulted in the alloy used now, both in alloy B2 and alloy B3. now, alloy B2 with restricted chemistry can be used in the welded condition and is less susceptible to SCC under many conditions. As always, care must taken in selecting the right alloy for the desired application.

Hastelloy B2 should not be used at temperatures between 1000℉ and 1600℉ as the alloy forms secondary phases that could decrease the ductility of the material. 

Hastelloy C2000 alloy features and applications

The Applications And Features of Hastelloy C2000/UNS N06200

The features of Hastelloy C2000 alloy:

Hastelloy C2000 alloy/UNS N06200 is unique among the versatile nickel-chromium-molybdenum materials in having a deliberate copper addition. This provides greatly enhanced to oxidizing chemicals and process streams contaminated with ferric ions and dissolved oxygen.

Like other nickel alloys, it is ductile, easy to form and weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions(a form of degradation to which the austenitic stainless steels are prone). It is able to withstand a wide range of oxidizing and non-oxidizing chemicals, and exhibits outstanding resistance to pitting and crevice attack in the presence of chlorides and other halides.

Hastelloy c2000 applications include reactors and heat exchangers.

Hastelloy C276 alloy/ UNS N10276 characteristic properties and applications

The characteristic properties and applications of Hastelloy C276 alloy/UNS N10276

 

C276 Alloy Seamless and Welded Pipes

The Characteristic and Applications of C276 alloy

Hastelloy C276 alloy/ UNS N10276 was the first wrought, nickel-chromium-molybdenum material to alleviate concerns over welding(by virtue of extremely low carbon and silicon contents). As such, it was widely accepted in the chemical process and associated industries, and now has a 50 years old track record of proven performance in a vast number of corrosive chemicals.

Like other nickel alloys, it is ductile, easy to form and weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions(a form of degradation to which the austenitic stainless steels are prone). With its high chromium and molybdenum contents, it is able to withstand both oxidizing and non-oxidizing acids, and exhibits outstanding resistance to pitting and crevice attack in the presence of chlorides and other halides. Furthermore, it is very resistant to sulfide stress cracking and stress corrosion cracking in sour, oilfield environments.

C276 alloy is available in the form of plates, sheets, strips, billets, bars, wires, pipes, tubes, and covered electrodes. Typical chemical process industry applications include reactors, heat exchangers, and columns.

Hastelloy C22 Welding & Fabrication

The Welding & Fabrication of Hastelloy C22

Hastelloy C22 alloy seamless and welded pipe

The welding & fabrication characteristic of hastelloy C22

Hastelloy C22 alloy/ UNS N06022 is very amenable to the Gas Metal Arc (GMA/MIG), Gas Tungsten Arc(GTA/TIG), and Shielded Metal Arc (SMA/Stick) welding processes. Matching filler metals are available for these processes, and welding guidelines are given in Brochure H-2010: Fabrication of HASTELLOY Corrosion-Resistant Alloys.

Wrought products of C22 are supplied in the Mill Annealed condition, unless otherwise specified. This Solution annealing procedure has been designed to optimize the alloy's corrosion resistance and ductility. Following all hot forming operations, the material should be reannealed, to restore optimum properties. The alloy should also be reannealed after any cold forming operations that result in an outer fiber elongation of 7% or more. The annealing temperature for C22 alloy is 1121℃(2050℉), and water quenching is advised (rapid air cooling is feasible with structures thinner than 10mm/0.375in.). A hold time at the annealing temperature of 10 to 30 minutes is recommended, depending on the thickness of the structure(thicker structure need the full 30 minutes). More details concerning the heat treatment of C22 are given in "Fabrication of Hastelloy Corrosion-Resistant Alloys".

C22 alloy can be hot forged, hot rolled, hot upset, hot extruded, and hot formed. However, it is more sensitive to strain and strain rates than the austenitic stainless steels, and the hot working temperature range is quite narrow. For example, the recommended start temperature for hot forging is 1232℃(2250℉) and the recommended finish temperature is 954℃(1750℉). Moderate reductions and frequent reheating provide the best results, as described in "Fabrication of Hastelloy Corrosion-Resistant Alloys". This reference also provides guidlines for cold forming, spinning, drop hammering, punching, and shearing. The alloy is stiffer than most austenitic stainless steels, and more energy is required during cold forming. Also, C22 alloy work hardens more readily than most austenitic stainless steels, and may require several stages of cold work, with intermediate anneals.

While cold work does not usually affect the resistance of C22 to general corrosion, and to chloride-induced pitting and crevice attack, it can affect resistance to stress corrosion cracking. For optimum corrosion performance, therefore, the reannealing of cold worked parts(following an outer fiber elongation of 7% or more) is important.

Hastelloy C22 characteristic properties

The Characteristic Properties of Hastelloy C22 alloy/UNS N06022

Hastelloy C22 alloy pipe 6meter

Hastelloy C22 alloy/ UNS N06022 is one of the well-known and well-proven nickel-chromium-molybdenum materials, the chief attributes of which are resistance to both oxidizing and non-oxidizing chemicals,and protection from pitting, crevice attack, and stress corrosion cracking. Its high chromium content provides much higher resistance to oxidizing media than the family standard C276 alloy. and imparts exceptional resistance to chloride-induced pitting, and insidious and unpredictable form of attack, to which the stainless steels are prone.

Like other nickel alloys, hastelloy C22 is very ductile, exhibits excellent weldability, and is easily fabricated into industrial components. is is available in the form of plates, sheets, strips, billets, bars, wires, pipes, tubes, and covered electrodes. Typical chemical process industry applications include reactors, heat exchangers, and columns.

Inconel X750 alloy/ UNS N07750/ W.Nr. 2.4669 Metallography

The Metallography of Inconel X750 alloy

Metallography Characteristic:

Inconel alloy x750, which contains aluminum and titanium, is made precipitation-hardenable by the combination, during heat treatment, of thest elements with nickel to form gamma prime (γ), the intermetallic compound Ni3(Al, Ti).

When alloy x750 is solution-treated at 2100℉，the number of dislocations and crystal defects are reduced, and γ and soluble carbides go into solution. For best results, the material should be in a fairly heavily worked condition prior to the treatment to ensure rapid and complete recrystallization. Once the material has been solution-treated, it should not be subjected to any cold work since it will generate new dislocations and thus impair rupture properties.

Creep resistance of alloy x750 stems from the uniform dispersion of intragranular γ; whereas rupture properties are more closely related to grain-boundary area microstructure. During the 1550℉/24 hr stabilization treatment of the triple heat treatment, fine γ appears in the grain interiors and M23C6 is precipitated in the grain boundary;adjacent to the grain boundary is a zone denuded of γ. On precipitation treating (1300℉/20 hr),γ has precipitated in this denuded zone. γ particles arrest the motion of moving dislocations, thereby increasing tensile and creep-rupture properties.

During M23C6 transformation at 1550℉, the carbon is essentially stabilized, without leaving chromium-depleted areas at the grain boundaries. This stabilization improves the resistance of nickel-chromium alloys to attack by certain corrosive media.

By Lowering the precipitation temperature from 1350℉ to 1150℉, as described for certain specific heat treatments, additional γ can be caused to nucleate in smaller particles, increasing the hardening effect and thereby improving tensile properties.

Inconel X750 alloy/ UNS N07750/ W.Nr. 2.4669 characteristic properties

The Characteristic Properties of Inconel X750 alloy

Inconel x750 characteristic properties:

Inconel alloy X750/ UNS N07750/ W.Nr. 2.4669 is a precipitation hardenable nickel-chromiun alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300℉. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300℉, heat-treated material has useful strength up to 1800℉. Alloy X750 also has excellent properties down to cryogenic temperatures.

Inconel X750 is used extensively in rocket-engine thrust chambers. Airframe applications include thrust reversers and hot-air ducting systems. Other applications are heat treating fixtures, forming tools, extrusion dies, test machine grips and large pressure vessels.

For springs and fasterners, inconel alloy X750 is used from sub-zero to 1200℉

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The Mechanical Properties of Inconel 718 alloy

The Mechanical Properties of Inconel 718 alloy

Inconel alloy 718 is produced under the NACE MR0175 which requires the solution annealed and aged material to meet a max. hardness value of 40 Rockwell C. It is typically solution heat treated at 1850-1900℉ and aged at 1450℉ for six to eight hours and air cooled.

The mechanical properties of inconel 718

Condition		Cold worked solution annealed & aged	Hot worked, solution annealed & aged	Hot worked, solution annealed & aged
Diameter, in. (mm)		0.5(12.7) to 3(76.2) inclusive	0.5(12.7) to 8(203.2) inclusive	8(203.2) to 10(254), inclusive
Tensile Strength, ksi(Kg/cm2)	min.	150(10545)	150(10545)	150(10545)
Yield Strength (0.2% Offset), ksi (Kg/cm2)	min.	120(8436)	120(8436)	120(8436)
	max.	140(9842)	140(9842)	140(9842)
Elongation in 2in.(50.8mm) or 4D%, min	min	20	20	20
Reduction of Area, %	min	25	25	25
Impact Strength, ft.lb(kg.m)	min. average	40(5.55)	40(5.55)	40(5.55)
Hardness	min	30	30	30
	max	40	40	40

The Electrical and Thermal Properties of Inconel 617

The eletrical and thermal properties of inconel 617 alloy/UNS N06617/W.Nr.2.4663a

Eletrical and Thermal Properties of Inconel 617

Temperature	Electrical Resistivity	Thermal Conductivity	Coefficient of Expansion	Specific Heat
°F	ohm·circ·mil/ft	Btu-in/ft2-h-F	10-6in./in./°F	Btu/lb-°F
78	736	94	-	0.1
200	748	101	7	0.104
400	757	113	7.2	0.111
600	764	125	7.4	0.117
800	770	137	7.6	0.124
1000	779	149	7.7	0.131
1200	793	161	8	0.137
1400	807	173	8.4	0.144
1600	803	185	8.7	0.15
1800	824	197	9	0.157
2000	-	209	9.2	0.163
°C	µΩ-m	W/m·℃	µm/m-℃	J/kg·℃
20	1.222	13.4	-	419
100	1.245	14.7	11.6	440
200	1.258	16.3	12.6	465
300	1.268	17.7	13.1	490
400	1.278	19.3	13.6	515
500	1.29	20.9	13.9	536
600	1.308	22.5	14	561
700	1.332	23.9	14.8	586
800	1.342	25.5	15.4	611
900	1.338	27.1	15.8	636
1000	1.378	28.7	16.3	662

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Editor: Yilia Wang Email: piping@metalspiping.com Website: www.metalspiping.com