Stainless Steel 304H Properties

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Stainless Steel 304H

Stainless Steel 304H is a high-carbon variant of the popular 304 stainless steel alloy. It is part of the austenitic family of stainless steels, known for their excellent corrosion resistance, formability, and weldability. The main difference between 304 and 304H lies in the carbon content. 304H typically has a higher carbon percentage (0.04% to 0.10%) compared to standard 304 (which has 0.08% max). This higher carbon content provides 304H with greater strength at elevated temperatures, making it ideal for high-temperature environments such as power plants, chemical processing, and exhaust systems. Ferrobend is a globally recognized manufacturer of stainless steel, specializing in high-performance alloys such as 304H. With decades of experience in the industry, Ferrobend has earned a reputation for its commitment to producing high-quality stainless steel that meets the most stringent industry standards. Whether it’s for industrial, commercial, or residential applications, Ferrobend’s stainless steel products are known for their excellent mechanical properties and long-lasting durability.

Ferrobend’s expertise in manufacturing stainless steel 304H ensures that customers receive products that meet the highest levels of performance. The company uses advanced technologies and state-of-the-art equipment to produce stainless steel products with exceptional precision, strength, and consistency. Their manufacturing processes also ensure that all products undergo rigorous testing and quality control to meet international standards such as ASTM, EN, and ISO.

Ferrobend sources raw materials from trusted suppliers to ensure the highest quality steel. The materials are then melted in electric arc furnaces, ensuring that the alloy’s composition is consistent and meets specifications.
Ferrobend employs advanced finishing techniques such as pickling, passivation, and polishing to enhance the surface properties of the stainless steel. These treatments improve corrosion resistance, surface finish, and overall durability.

Stainless Steel 304H by Ferrobend is a top-tier material choice for industries that require strength, durability, and resistance to high temperatures and corrosion. Whether you are looking to manufacture heat exchangers, pressure vessels, or automotive parts, Ferrobend’s advanced manufacturing processes ensure that you receive products that meet the highest quality standards.
By choosing Ferrobend for your Stainless Steel 304H needs, you are assured of superior performance, reliability, and long-term cost savings. With Ferrobend’s commitment to quality, precision, and innovation, you can trust that your projects will be completed with the highest level of excellence.

Chemical Properties:

Elements Cr Ni C Si Mn P S Mo Fe
% min: 17.0 ,max:19.0 min: 8.0 ,max: 10.0 0.15 max 1.00 max 2.0 max 0.20 max 0.15 min 0.75 balance

Mechanical Properties:

Tensile Strength ksi (min.) Yield Strength 0.2% Offset ksi (min.) Elongation - % in 50 mm (min.) Hardness (Brinell) MAX Hardness (Rockwell B) MAX
75 30 35 228 -

Physical Properties:

Denstiy lbm/in3 Coefficient of Thermal Expansion (min/in)-°F Electrical Resistivity mW-in Thermal Conductivity BTU/hr-ft-°F Melting Range
at 68 °F at 68 – 212°F at 68 – 932°F at 68 – 1450°F at 68°F at 212°F at 392°F at 752°F at 1112°F at 1472°F at 68 – 212°F -
0.29 9.2 10.4 10.9 28.3 30.7 33.8 39.4 43.7 47.6 113.2 2552°F

Equivalent Grades and Designations:

SAE / AISI 303
UNS S30300
EN Material Number 1.4305
EN Material Name X8CrNiS18-9
DIN Material Name X8CrNiS18-9
JIS SUS 303
BS 202S 21 En58M

Heat Resistance:

  • Good oxidation resistance at temperatures up to 1700oF (927 oC)
  • Continuous use at temperatures above 1400oF (760oC) is not usually recommended due to carbide precipitation which can lead to irregular scaling
  • Does not have a low carbon content so it is also vulnerable to sensitization

Welding Characteristics:

  • Not generally recommended, but may be welded with some difficulty
  • May be welded with Alloy 310 electrodes
  • Should be annealed after welding to re-dissolve precipitated carbides

Machinability:

  • High machining rates can be obtained in the annealed condition with hardness in the range of 200 to 240 Brinell
  • Will work harden; therefore, it should be machined at reduced surface feet per minute and heavier feeds to prevent glazing at the tool interface.

Applications:

  • Nuts and bolts
  • Aircraft fittings
  • Gears
  • Screws
  • Shafts
  • Electrical switchgear components
  • Bushings