Welche Materialien werden üblicherweise für Reaktionsgefäße verwendet und welche Codes gelten dafür?

The common materials currently adopted by Kemi are mainly Hastelloy C276 and 316L stainless steel, with the codes being HC1 for Hastelloy C276 and SS1 for 316L stainless steel respectively. Other materials and their corresponding codes are as follows: 304 stainless steel (SS2), 904L stainless steel (SS3), 310S stainless steel (SS4), Hastelloy B-2 (HB2), commercial pure titanium (TA2), Zirconium Alloy 702 (ZR1), Monel Alloy 400 (MN1) and Inconel 600 (IN1).

Kemi Standard Materials

These are the two most frequently used materials, covering the vast majority of laboratory applications.

• Hastelloy C276
  • Code: HC1
  • Description: This is a nickel-molybdenum-chromium superalloy with an addition of tungsten. It is widely considered the most versatile corrosion-resistant alloy available.
  • Application: Excellent resistance in a wide variety of chemical process environments, including strong oxidizers (like ferric and cupric chlorides), hot contaminated media, chlorine, formic and acetic acids, and seawater. It is the preferred choice for harsh chemical synthesis.
• 316L Stainless Steel
  • Code: SS1
  • Description: An austenitic chromium-nickel stainless steel containing molybdenum. The “L” stands for “Low Carbon,” which minimizes carbide precipitation during welding.

Application: The industry standard for general laboratory use. It offers good resistance to atmospheric corrosion and many organic and inorganic chemicals. It is ideal for pharmaceutical, food processing, and standard chemical applications where extreme corrosion is not a factor.

Stainless Steel Series (Extended)

Beyond the standard 316L, Kemi offers other stainless steel grades for specific cost or performance requirements.

• 304 Stainless Steel
  • Code: SS2
  • Description: The most common stainless steel. It offers basic corrosion resistance and is cost-effective.
  • Application: Suitable for less aggressive environments and standard organic reactions where high corrosion resistance is not required.
• 904L Stainless Steel
  • Code: SS3
  • Description: A super-austenitic stainless steel with high nickel and molybdenum content.
  • Application: Specifically designed to resist moderate to high concentrations of sulfuric acid. It offers better stress corrosion cracking resistance than 316L.
• 310S Stainless Steel
  • Code: SS4
  • Description: A highly alloyed austenitic stainless steel designed for high-temperature service.
  • Application: Best used in environments where high-temperature oxidation resistance is the priority.

Specialized Alloys & Reactive Metals

For extreme environments where stainless steel or standard Hastelloy C276 may fail, Kemi provides the following specialized materials.

• Hastelloy B-2
  • Code: HB2
  • Description: A nickel-molybdenum alloy.
  • Application: Exceptional resistance to reducing environments, particularly hydrochloric acid at all concentrations and temperatures. Note: It has poor corrosion resistance to oxidizing environments.
• Monel 400
  • Code: MN1
  • Description: A copper-nickel alloy.
  • Application: Famous for its resistance to hydrofluoric acid (HF), fluorine, and marine environments.
• Inconel 600
  • Code: IN1
  • Description: A nickel-chromium alloy.
  • Application: Designed for high-temperature applications. It resists oxidation and carburization well.
• Industrial Pure Titanium (Grade 2)
  • Code: TA2
  • Description: A reactive metal that forms a protective oxide film.
  • Application: Outstanding resistance to oxidizing media (like nitric acid), chlorides, and seawater. It is lightweight but strong.
• Zirconium Alloy 702
  • Code: ZR1
  • Description: A highly specialized reactive metal.
  • Application: Offers excellent resistance to almost all organic and inorganic acids, strong alkalis, and some molten salts. It is often used when no other metal can survive the environment.

Reference Table