How to Choose the Best Hastelloy C276 Tubing

Hastelloy C276 is a superalloy having a precise nickel, molybdenum, and chromium composition. Additionally, there is a trace of tungsten, which provides an exceptional kind of corrosion resistance. It also allows Hastelloy C276 to function smoothly in harsh settings. The tubes are of high quality and can be used in a variety of applications. They are particularly beneficial in pollution control units, chemical processing plants, paper, pulp mills, and various other applications. With so many different qualities available these days, it’s difficult to find the best one, especially when you are new in the industry. So, let us know how to buy Hastelloy C276 tubing online.

Three Things to Know About 304 Stainless Steel

Grade 304 stainless steel belongs to the austenitic stainless steel family. It contains high nickel content that ranges between 8 and 10.5% by weight. The chromium content of 304 stainless steel lies between 18 to 20% by weight. Besides these elements, it also includes other alloying elements such as carbon, manganese, and silicon. The remaining chemical composition mainly comprises iron. Grade 304 is the standard “18/8” stainless and is defined as a Chromium-Nickel austenitic alloy.

Grade 304 (UNS S30400) is referred to in ASTM A240 as 304-grade steel. It is available in various forms such as steel, strip, quarto plate, tube, bar, fittings and flanges, plate, and pipe. The lower carbon content in grade 304 brings down the risk of carbide precipitation, which occurs in alloys containing a higher percentage of carbon. The chromium and nickel content gives 304 stainless steel tube excellent corrosion resistance, making them applicable across a wide range of industries.

Difference between 304, 304H, and 304L

According to Cr-Ni content, Grade 304 stainless steel has the following variants:

  • 304,
  • 304H, and
  • 304L

While these variants have 18% chromium and 8% Nickel, the significant difference lies in their carbon content.

  • 304L: The “L” in 304L may imply the extra-low carbon content, amounting to 0.03% or less. It helps in effectively preventing intergranular corrosion. The ultra-low carbon content increases its stress corrosion resistance.
  • 304H: The H in 304H indicates a high temperature. Its higher carbon content renders it usable at high temperatures. It should not have a carbon composition lesser than 0.04%. Since you can use it at high temperatures, it makes it better than pure austenite.
  • 304: Its carbon content lies between 304L and 304H. The increase in carbon content decreases its corrosion resistance ability.

It is suitable for manufacturing deep-drawn parts and acid pipelines, structural parts, containers, different instrument bodies, and more.

Applications of 304 Stainless Steel

304 stainless steels have a wide range of domestic and commercial applications. It is generally used in:

  • Cutlery and flatware
  • Sinks and splashbacks
  • Saucepans
  • Sanitaryware and troughs
  • Architectural paneling
  • Brewery, dairy, food, and pharmaceutical production equipment
  • Tubing
  • Springs, nuts, bolts, and screws
  • Architectural paneling, railings & trim
  • Heat Exchangers
  • Chemical containers, including for transport
  • Dyeing industry
  • Woven or welded screens for mining, quarrying, and water filtration

Advantages of Grade 304 Stainless Steel

  • The Cr-Ni content in Grade 304 enables it to resist intergranular corrosion. Its high corrosion resistance and value make it a popular choice.
  • It has an impressive hot and cold forming process. It is helpful in processing board and producing tube, wires, tape, and other products.
  • Grade 304 stainless steel shows good weldability. You can readily weld the allows using any given arc welding processes (such as TIG, MIG, MMA, and SA). It can get welded into a precise structure with specific properties and characteristics.
  • It is highly durable and easy to sanitize, making it ideal for kitchen and food applications.
  • It shows better performance at lower temperatures. At -180 ℃condition, Grade 340 has good strength, elongation, and area reduction rate.

To Conclude:

These are a few essential things you should know about grade 304 stainless steel. It is austenitic stainless steel that has various applications and an extensive application volume.

Four Things to Know About 316 Stainless Steel

Grade 316 is a popular stainless steel alloy belonging to the austenitic family. It is known for its 2-3% molybdenum content, making the alloy resistant to pitting and corrosion. It also improves its corrosion resistance on exposure to elevated temperatures. Type 316 is marine-grade stainless steel, and the presence of molybdenum makes it suitable for more saline or chloride-exposed environments.

316 stainless steel has various industrial applications that involve processing chemicals and high-saline environments like coastal areas and environments where de-icing salts are common. The non-reactive properties of Grade 316 also render it valuable in the manufacture of medical surgical equipment to avoid excessive metallic contamination. 316 stainless steel tube is an austenitic chromium-nickel stainless similar to type 304, and the significant difference lies in its Mo content. Grade 316 is durable, easy to fabricate, weld, clean, and finish.

Difference between 316 and 316L

Stainless Steel 316 (S31600) consists of 2 to 3% molybdenum by weight, improving its corrosion resistance. It can resist pitting and crevice corrosion in chloride environments. It has high creep strength and higher corrosion resistance than 302 and 304.

Stainless Steel 316L (S31603) has lower carbon content than stainless steel 316. It is highly immune to grain boundary carbide precipitation (or sensitization). It requires extensive welding. It is highly suitable for use in heavy gauge welded components.

Physical Properties of 316 and 316L Steels

  • Density: 0.799g/cubic centimeter
  • Melting Range: 2,500–2,550° Fahrenheit (1,371–1,399° Celsius)
  • Electrical resistivity: 74 microhm-centimeters (20° Celsius)
  • Thermal conductivity: 16.2 Watts/meter-Kelvin (100° Celsius)
  • Specific Heat: 0.50 kiloJoules/kilogram-Kelvin (0–100° Celsius)
  • Modulus of Elasticity (MPa): 193 x 103 in tension

Common uses for 316 stainless steels

  • Marine equipment
  • Industrial equipment, including pharmaceutical manufacturing and chemical manufacturing
  • Cisterns and pipes for chemical applications
  • Medical equipment
  • Industrial and chemical transportation
  • Pressure vessels
  • Commercial kitchens
  • Outdoor site furnishings
  • Commercial appliances
  • Food production and processing in saline environments

Benefits of Grade 316 Stainless Steel

Lasting Durability

Grade 316 offers high strength and versatility, making it suitable for long-lasting custom wire baskets. The durable baskets can survive constant exposure to high-impact processes.

Marine Applications

Seawater and salt air can damage metals. The presence of chlorides, like salt, can eat away even the most rigid metals. Salt also affects the protective oxide layer of stainless steel, making them rust. Grade 316 is ideal for marine applications or processes that involve chlorides. It also shows resistance to salt and chloride pitting. It is suitable for naval applications.

Corrosion Resistance

The molybdenum content in grade 316 stainless steel renders it more corrosion resistant than similar alloys. Molybdenum helps reduce pitting from chemical environments, making it suitable for use in highly acidic and caustic environments. Grade 316 can withstand caustic solutions and corrosive applications. It is also ideal for pharmaceutical and medical applications. Grade 316 can prevent rust in different corrosive environments or media. It is susceptible to stress corrosion cracking above 60°C.

To Conclude:

You should know a few essential things about grade 316 of austenitic stainless steel. The presence of chromium and nickel and a bit of molybdenum in the mix makes it a precious alloy with excellent corrosion resistance, pitting resistance, and machinability. These properties have highly improved their commercial importance.