1.4529 (N08926) Super austenitic stainless Steel Overview:

The 1.4529 (N08926) super austenitic stainless steel usually has a Cr content of 14.0-18.0, and the nickel content of 24.0-26.0.1.4529 (N08926) alloy is a nickel-based alloy containing titanium and aluminum, containing enough chromium to form and maintain enough chromium oxides to be protected at high temperatures, It has higher temperature resistance than conventional Cr-Ni stainless steel such as 304.The higher nickel content makes it have better oxidation resistance than the standard 18-8 stainless rust, and its oxidation resistance is no less than that of 1900 degrees Fahrenheit (1038 ℃). Higher grade alloy.

The physical properties of super austenitic stainless steel:

(1) density: 8.1 g / cm ~ (3);

(2) 1.4529 (N08926) alloy nickel alloy melting point: 1320-1390 ℃;

(3) minimum mechanical properties of alloy (N08926) alloy at room temperature:

1) tensile strength 650Rm N / 2mm;

2) yield strength 295 RP0.2 N / mm 2;  

3) elongation A 5: 35.

The main characteristics of 1.4529 (N08926) super austenitic stainless steel: 

(1) high resistance to pitting corrosion and crevice corrosion in halide medium and acid medium containing H2S,

(2)  effective resistance to chloride stress corrosion cracking in practical application;

(3)  Excellent corrosion resistance to all kinds of corrosion in the normal oxidation and reduction environment.

(4) The mechanical properties of the alloy were greatly improved than that of Cronifer 1925 LC-Alloy 904L, the metallurgical stability of the alloy with 18% nickel content in the same series was greatly improved, and the mechanical property of the alloy was better than that of the alloy containing 18% of nickel in the same series.

(5)  For pressure vessel manufacturing related certification (VdTUV-196~400 ℃ and ASME certification).

Application :

1.4529 (N08926) alloy is a kind of multi-purpose material, which can be used in many industrial fields:

(1) fire control system, seawater purification system, hydraulic and pouring pipeline system in marine engineering;

(2)  bleaching pool in cellulose pulp production;

(3)  polished rod in corrosive oil well;

(4)  hose system in ocean engineering;

(5) pipes, joints, airflow system in acid gas production;

(6) components in flue gas desulfurization system;

(7) evaporator in phosphoric acid production, hot cross Changers, filters, mixers, etc.;

(8)  sulphuric acid separation and condensation systems.

Processing and heat treatment of super austenitic stainless steel (N08926):

 suitable for cold, hot processing and machining, but because of its high strength, cold, hot processing need high power processing equipment.

1．Heating of alloy 1. 4529 (N08926):

1) the workpiece should be kept clean before and during heat treatment;

2) no contact with sulphur, phosphorus, lead and other low melting point metals during heat treatment, Otherwise will damage the performance of the material, should pay attention to cleaning such as marking paint, temperature indicator paint, color crayons, lubricating oil, fuel and other dirt;

3) the lower the sulphur content in the fuel, the better, the sulfur content in the natural gas should be less than 0.1 and the sulfur content in the heavy oil should be less than 0.5;  

4) in view of the need of temperature control and keeping clean, it is best to conduct heat treatment in the vacuum furnace or gas shielded furnace;  

5) it can also be heated in a box-type furnace or a gas furnace, but the furnace gas must be clean and suitable for neutral to micro-oxidation, the fluctuation of the furnace gas between oxidation and reductivity should be avoided, and the heating flame cannot be fired directly to the workpiece.

2．Hot working of alloy 1.4529 (N08926): 

1) 1.4529 (N08926) ) the hot working temperature of the alloy ranges from 1200 ℃ to 900 ℃, and the cooling mode is water quenching or rapid air cooling.

2)  when heated, the material can be directly fed into the furnace with the highest working temperature. After holding enough time (60 minutes heat preservation time per 100mm thickness), the material can be hot processed in the specified temperature range. When the material temperature drops below the hot working temperature, it needs to be reheated.

3) in order to obtain the best performance, solution treatment should be carried out after hot processing.

3．1.4529 (N08926) Alloy Cold working: 

1) and all of the It is necessary to select the processing equipment because of the high work hardening rate of 1.4529 (N08926) alloy, which is the same as chromium-nickel stainless steel.

2) The cold working material should be solid solution heat treatment, and the intermediate annealing should be carried out when the cold working quantity is large.if the cold processing amount is greater than 15, the workpiece needs to be treated with secondary solution.

4．Heat treatment of Alloy 926 (N08926) alloy: 

1) the solution treatment temperature range of 1. 4529 (N08926) alloy is 1150 ℃ ~ 1 200 ℃, the optimum temperature is 1170 ℃;  

2) the cooling mode of the material with thickness greater than 1.5mm is water quenching, and the material with thickness less than 1.5mm can also be cooled by rapid air cooling. If air cooling is used.  

3) during heat treatment, the material can be directly fed into the furnace with the highest working temperature and the workpiece must be kept clean.

5．Deoxidization and pickling of 5N08929 (N08926) alloy: 

1) the surface oxides of the alloy 1.4529 (N08926) and the adhesion of the welding slag around the weld seam are stronger than those of the low alloy stainless steel. Fine grain abrasive belt or fine grain grinding wheel is recommended for grinding.

2)  The oxygenated film must be carefully ground or pretreated by salt bathbefore proper time and temperature of pickling with HNO3/HF mixed acid. The machined: 1.4529 (N08926) alloy shall be machined after heat treatment.

6．Due to the hardening of the material, it is advisable to use a cutting speed and a refeed tool lower than the standard austenitic stainless steel for processing low alloy, In order to get into the cold hardened surface layer.

Specification and supply state of super austenitic stainless steel:

1. classification: Shanghai Baoyu special alloy can produce 1.4529 seamless tube / 1. 4529 steel plate / 1. 4529 round steel forgings 1. 4529 flange 1. 4529 ring 1. 4529 welded pipe 1. 4529 welded pipe 1. 4529 Wire and 1.4529 matching welding materials.

2. delivery: seamless pipe: solid acid white, length can be fixed; sheet: solid solution, pickling, edge cutting; welded pipe: solid acid white RT% probe Wound, forgings: annealed lathe; bar in forging state, surface polished or glazed; strip cold rolled, solid solution soft state, oxidized skin delivery; wire in solid solution acid pickling disk or straight strip, solid solution straight strip fine polished state delivery.

RFQ

Q1: Can I get some samples?
A: Yes, we can supply free sample, but the shipping cost should be paid by our customers.
Q2: How to make payments?
A: 30% T/T in advance , the balance before shippment.
Q3: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. The third-party will be accepted.
Q4:What's your MOQ?
A:Our MOQ is 1.5 ton. 
Q5: How about delivery lead time?
A:Delivery lead time: About 7-15 days after payment confirmed. 
Q6:Is there a discount?
A:Different quantity has different discount.
Q7: Are you trading company or manufacturer ?
A: We are factory. Our factory is located in Wuxi, Jiangsu,about two hours drive from shanghai port.