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321 stainless steel bar is a type of stainless steel bar made primarily from alloy 321 stainless steel. Stainless steel bars are solid long cylindrical pieces of metal with a uniform cross-section. They are commonly used in various industries such as construction, manufacturing, automotive, and aerospace.
321 stainless steel is a stabilized austenitic stainless steel alloy that contains titanium. The addition of titanium provides increased resistance to intergranular corrosion, making it suitable for high-temperature applications. This alloy also offers excellent mechanical properties, good formability, and high oxidation resistance.
321 stainless steel bars are typically available in various shapes, including round, square, and hexagonal, and they come in different sizes and lengths to meet specific project requirements. They can be used in a wide range of applications, such as structural components, fasteners, shafts, valves, and fittings.
The designation "321" refers to the specific composition of the stainless steel alloy, which includes approximately 17% to 19% chromium, 9% to 12% nickel, 0.08% maximum carbon content, 2% maximum manganese, 1% maximum silicon, 0.75% maximum titanium, and trace amounts of other elements.
It's important to note that stainless steel bars are typically produced through processes like hot rolling, cold drawing, or machining to achieve the desired shape, size, and surface finish. The resulting bars are known for their durability, corrosion resistance, and versatility in various demanding environments.
WERKSTOFF NR. | STANDARD | JIS | UNS | EN |
1.4541 | SS 321 | SUS 321 | S32100 | X6CrNiTi18-10 |
Grade | Ti | Mn | C | Si | S | P | Mo | Cr | Ni |
SS 321 | 5(C+N) to 0.70 maximum | 2.0 maximum | 0.08 maximum | 1.0 maximum | 0.030 maximum | 0.045 maximum | – | 17.00 to 19.00 | 9.00 to 12.00 |
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Min. % | Max % | ||||||||||
Carbon | 0 | 0.08 | |||||||||
Silicon | 0 | 1.00 | |||||||||
Manganese | 0 | 2.00 | |||||||||
Nickel | 9.00 | 12.00 | |||||||||
Chromium | 17.00 | 19.00 | |||||||||
Titanium | 5 x Carbon | 0.80 | |||||||||
Phosphorous | 0 | 0.045 | |||||||||
Sulphur | 0 | 0.03 |
Finish | Hot Finish | Cold Finish | |||||||||
Dia or Thickness mm | All | Up to 12.7 | Over 12.7 | ||||||||
Temsile Strength Mpa Min. | 515 | 620 | 515 | ||||||||
Yield Strength Mpa Min. | 205 | 310 | 205 | ||||||||
Elongation in 50mm % Min. | 40 | 30 | 30 |