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AISI 348H Stainless Steel Chemical Properties, Grade, Tables and Online Pdf

AISI 348H is a well-known austenitic heat-resistant stainless steel with excellent corrosion resistance, high-temperature capacity, and oxidation resistance. Its chemical composition normally consists of chromium, nickel, manganese, silicon, carbon, phosphorus, sulfur, and iron. This grade AISI 348H is specifically designed for use in temperature resistant applications making it handle extremely challenging environments that other materials may not be suitable for. That stainless steel grade is especially sought after in chemical processing plants, petrochemical refineries, and thermal processing industry because of its ability to withstand harsh conditions. The chart and PDF files that include details of the properties, number of grades, and chemical composition of the material help the engineers and the manufacturers select the suitable material for the specifications.

AISI 348H Austenitic Stainless Steel Chemical Composition And Grade Table

AISI 348H Austenitic Stainless Steel is characterized with precisely manufactured chemical compositions to ensure sustained performance. As seen from the given table, its carbon content varies from 0.04% to 0.10 %. Consequently, it has excellent corrosion resistance and also high-temperature strength. This alloy is characterized by nickel from 17.00% and 20.00%, chromium levels from 8.00% to 11.00%, and molybdenum from 2.00% to 3.00% which makes it suitable in tough environments. The extension of silicon, manganese, phosphorus, sulfur, and nitrogen also maximizes corrosion resistance and long-term durability. It serves as a comprehensive tool which is thus appropriate for a wide range of industrial uses such as cutting and drilling, among others.

AISI 348H Austenitic Stainless Steel
Elements Fe Cr Ni Mn Nb Si Co C Ta P S
Min (%) 63.8 17 9 - 0.32 - - 0.040 - - -
Max (%) 73.6 19 13 2.0 1.0 0.75 0.2 0.1 0.1 0.045 0.030

The Advantages and Disadvantages of AISI 348H Austenitic Stainless Steel

    Advantages:

  • High Corrosion Resistance: High overall corrosion protection in numerous conditions, chemical and marine included.

  • Heat Resistance: It is capable of providing high strength and structural stability while at high temperatures.

  • Good Weldability: Possess high weldability, without any detrimental effect on the corrosion and mechanical properties of the material.

  • Stability Against Sensitization: These elements such as columbium and tantalum save the steel matrix from carborization during the welding process.

  • High Strength: It has higher mechanical strength in comparison to other austenitic stainless steels.

    Disadvantages:

  • Cost: Normally costlier in comparison to other grades of stainless steel due to presence of alloying additions.

  • Work Hardening: Generally tends to solidify quickly during the process of machining thereby making it even more difficult to work on.

  • Limited Cold Working: Compared to other austenitic steels, it has lower ductility which restricts cold working.

  • Susceptible to Chloride Stress Corrosion Cracking: May be sensitive to chloride-induced stress corrosion cracking in specific conditions.

  • High Density: Heavier as compared to other materials that may increase the weight of the components.

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Frequently Asked Questions

FAQs
What is the content of the main alloying elements in AISI 348H stainless steel?

It is known that primary alloying components are chromium, nickel, columbium (niobium), and tantalum.

What are the differences between AISI 348H and AISI 347?

AISI 348H has higher carbon content than AISI 347, enhancing the high temperature properties of the material.

What is the chemical analysis of AISI 348H?

Generally, it consists of 17-19 percent chromium, 9-13 percent nickel, and 0. 08-0. Columbium and tantalum, 20%, and 0% of the other components, and cobalt. 04-0. 10% carbon.

What is the purpose of columbium in AISI 348H stainless steel?

Columbium is added for its ability to inhibit carbide formation during welding to increase corrosion capability and stability.

Raw Material Prices (Updated as on: 27 Jul 2024 02:29 AM) LIVE RATES

MetalsPrice/TonnePrice/KG
Nickel$15,673₹1,312.19
LME$15,825₹1,324.85
Copper$9,102₹762.02
LME$9,038₹756.63
Aluminum$2,251₹188.42
LME$2,276₹190.57
Zinc$2,662₹222.87
LME$2,652₹222.06
Lead$2,064₹172.81
LME$2,032₹170.11

Currency Rates (Updated as on: 27 Jul 2024 02:29 AM) LIVE RATES

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  • 1 CNY = 11.55 INR
  • 1 AED = 22.8 INR
  • 1 USD = 3.67 AED
  • 1 USD = 7.25 CNY
Stainless Steel
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