Product Description:

Ni-base Alloy steel

UNS N02200/N02201 Alloy Steel

Introdution:
UNS N02200 and UNS N02201 are solid solution strengthened, commercially pure wrought materials with good mechanical properties over a wide range of temperatures and excellent resistance to many corrosives, in particular hydroxides. UNS N02200 was a modification of UNS N02201 to control carbon (.02 max) which keeps it from being embrittled by intergranular precipitates at temperatures of 600° F to 1400° F in many processes. Typically, the elemental restrictions of both, UNS N022000 and UNS N02201, are combined into one, dual-certified chemistry resulting in a single alloy with the desired characteristics of both alloys, UNS N02200/N02201.

Available Form:
Sheet , Plate, Bar, Pipe & Tube (welded & seamless) , Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples) , Wire.
Characteristics:
1. Highly resistant to various reducing chemicals
2. Excellent resistance to caustic alkalies
3. High electrical conductivity
4. Excellent corrosion resistance to distilled and natural waters
5. Resistance to neutral and alkaline salt solutions
6. Excellent resistance to dry fluorine
7. Widely used to handle caustic soda
8. Good thermal, electrical and magnetostrictive properties
9. Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations
Both UNS N02200 and UNS N02201 offer corrosion resistance in reducing and neutral media as well as in oxidizing atmospheres provided that the oxidizing media allows the formation of a passive oxide film. This oxide film accounts for the materials excellent resistance in caustic environments. Corrosion rates in both marine and rural atmospheres are very low. The resistance of UNS N02200/N02201 to corrosion by distilled and natural waters is excellent. Plus it also gives excellent service in flowing sea water even at high velocity, but in stagnant or very low-velocity sea water severe local attack may occur under fouling organisms or other deposits. In hot water systems where the steam contains carbon dioxide and air in certain proportions, corrosion rates will be initially high but will decrease with time if conditions favor the formation of a protective film.
UNS N02200 is normally limited to service at temperatures below 600° F. At higher temperatures UNS N02200 Products can suffer from graphitization which can result in severely compromised properties. When operating temperatures are expected to exceed 600° F, carbon content becomes critical. The lower carbon content of UNS N02201 makes the material resistant to graphitization and therefore less subject to embrittlement. UNS N02200/N02201 are approved for construction of pressure vessels and components under ASME Boiler and Pressure Vessel Code Section VIII, Division 1. UNS N02200 is approved for service up to 600° F while UNS N02201 is approved for service up to 1230° F. Melting point is 2615-2635° F.

Application:
1. Food processing equipment
2. Marine and offshore engineering
3. Salt production
4. Caustic handling equipment
5. Manufacture and handling of sodium hydroxide, particularly at temperatures above 300° F
6. Reactors and vessels in which fluorine is generated and reacted with hydrocarbons
Applications where UNS N02200/N02201 can be used include chemical processing and storage, synthetic fiber production, and processes where sodium hydroxide and fluorine is used. Other applications include aerospace and defense as well as food processing. UNS N02200/N02201 has exceptional resistance to caustic alkalies at various temperatures and concentrations.
Fabrication with UNS N02200/N02201
All hot working and cold working practices can be utilized when shaping UNS N02200/N02201. Hot working temperatures should be between 1200° F and 2250° F with heavy forming to be performed at temperatures above 1600° F. Annealing should be performed at a temperature between 1300° F and 1600° F. Care should be taken when choosing the anneal temperature and time at temperature for this can greatly influence the mechanical properties and structure of the material.
UNS N02200/N02201 can be easily welded by conventional welding, brazing, and soldering processes with the exception of the oxyacetylene process.

Product description:

Step Shaft UNS N02200/N02201  Tube UNS N02200/N02201  Pie-shaped UNS N02200/N02201  Ring UNS N02200/N02201   Module Large valves of the main UNS N02200/N02201   Other Profiled forgings UNS N02200/N02201

Special Steel classification:

Stainless steel, Hi-Steel HSLA-80, Mould steel,  Heat resistant steel, Tool steel, Ball bearing steel,Spring steel,  Alloy steel,  Construction steel,  Die steel, High-speed steel,  angles, channels, H steel, I-beams, welded pipes, seamless tubes,

Standard:
Our products meet Chinese GB, Japanese JIS, US ASTM, UK BS, EU DIN standards and so on.

Our advantages:

Our advantages such as advanced management and operation concepts, suitable work facilities, highly qualified talents and a number of trade partners who have long-term and close cooperation with us have ensured us to provide global customers with competitive high-quality commodities and excellent services, quickly, accurately, conveniently and completely.

Products Introduction:

Specifications

Round bar:
Diameter : 1mm-2000mm

Square bar:
Size:  50mm * 50mm-600mm *600mm

Plate steel/flat bar:
Size: Thickness:  0.1mm-800mm Width: 10mm to 1500mm

Tube/pipe:
Size: OD:  6-219mm  WT: 1-35 mm.

Cold-rolled sheet: Thickness:  2-5mm Width:1000mm Length: 2000mm

Hot-rolled sheet: Thickness:6-80mm Width: 210-610mm

Length:  We can supply any length based on the customer's requirement.

Forging/hot rolling/ extrusion of steel.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Finished goods condition:  hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions:  scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing:  electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection:  100% ultrasonic inspection for any inperfections or based on the customer's requirement

Excellent service for all kinds of industries, with advantages of technologies,  equipment and price.

We serve you with our honesty,  integrity,  and professionality.