Stainless Steel 440 Flanges Supplier & UNS S44000 Flanges Exporter

GENERAL PROPERTIES:-

Stainless steels are high-alloy steels which have high corrosion resistance compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are divided into three types such as ferritic, austenitic, and martensitic steels. Another group of stainless steels are precipitation-hardened steels. They are a combination of martensitic and austenitic steels. Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make 440C particularly suited to such applications as ball bearings and valve parts.

APPLICATIONS:-

Typical applications include:

• Rolling element bearings
• Valve seats
• High quality knife blades
• Surgical instruments
• Chisels

CORROSION RESISTANCE:-

Good resistance to the atmosphere, fresh water, foods, alkalies and mild acids. Best resistance in the hardened and tempered and passivated condition. A smooth polished surface also assists.

The corrosion resistance of grade 440C approximates that of grade 304 in many environments.

HEAT RESISTANCE:-

Not recommended for use in temperatures above the relevant tempering temperature, because of reduction in mechanical properties by over-tempering.

HEAT TREATMENT:-

Annealing – Full anneal – 850-900°C, slow furnace cool to about 600°C and then air cool. Sub-critical Annealing – 735-785°C and slow furnace cool.

Hardening – Heat to 1010-1065°C, followed by quenching in warm oil or air. Oil quenching is necessary for heavy sections. Immediately temper at 150-370°C to obtain a wide variety of hardness values and mechanical properties as indicated in the accompanying table.

Tempering in the range 425-565°C is to be avoided because of reduced impact resistance and corrosion resistance. Tempering in the range 590-675°C results in lower hardness (the product become machinable) and high impact resistance.

WELDING:-

If welding is necessary pre-heat at 250°C and follow welding with a full anneal. Grade 420 filler will give a high hardness weld (although not as high as the 440C), but 309 or 310 will produce soft welds with higher ductility.

MACHINING:-

In the annealed condition this grade is relatively easily machined; approximately the same as for high speed steel. Chips are tough and stringy so chip breakers are important. If these grades are hardened machining becomes more difficult and probably impossible.

COMPOSITION:-

MECHANICAL PROPERTIES:-

PHYSICAL PROPERTIES:-

POSSIBLE ALTERNATIVE GRADES:-

STAINLESS STEEL FLANGES

A wide variety of stainless steel flanges are all available at CCTF, including weld necks, slip-ons, threaded, socket weld, lap joints, blinds, and hub blinds.

GRADES A316/316L and A304/304L

• Weld Neck

• Sch10, Sch40 and Sch80 Bore
• Classes 150, 300, 600, 900, 1500
• Sizes: ½" to 24"

• Slip-On

• Classes 150, 300, 600, 900, 1500
• Sizes: ½" to 24"

• Threaded

• Classes 150 & 300
• Sizes: ½" to 4"

• Lap Joint

• Class 150 only
• Sizes: 2" to 6"

• Blind

• Classes 150 & 300
• Sizes: ½" to 12"

• Hub Blind

• Classes 300, 600, 1500
• Sizes: ½" to 6"

• Socket Weld

• Sch40 & Sch80 Bore
• Classes 150, 300, 600
• Sizes: ½" to 2"

We export our STAINLESS STEEL 440 FLANGES products to Western and Eastern Europe, Saudi Arabia, Bangladesh, United States, United Arab Emirates, Canada, Angola, Argentina, Austria, Azerbaijan, Pakistan, Peru, Chile, Spain, France, United Kingdom, Indonesia, Israel, Iran, Kuwait, Mexico, Malaysia, Nigeria, Serbia, Singapore, Taiwan, Chile, Venezuela, Ecuador, Netherlands, Brazil, Colombia, Ghana, Iran, Denmark, Poland, Australia, Afghanistan, Bahrain, Costa Rica, Egypt, Iraq, Jordan, South Korea, Kazakhstan, Sri Lanka, Lithuania, Norway, Oman, Philippines, Poland, Qatar, Russia, Vietnam, South Africa, Nigeria, Mexico, Turkey, Hungary, Algeria, Belarus, Belgium, Bhutan, Bolivia, Bulgaria, Croatia, Czech Republic, Estonia, Finland, Greece, Italy, Japan, Libya, Romania, Thailand, Trinidad & Tobago,Tunisia, Ukraine, Yemen, Hong Kong, Gabon, China, Portugal, Switzerland, New Zealand, Sweden, Slovakia, Kenya, Lebanon, Morocco, Mongolia etc. We are sure that we also can cover the requirements requested by your company you can email us at harshsteel@ymail.com for your instant requirements.

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