Stainless Steel 321 Hollow Bar

Latham Steel, based in Hamilton, New Zealand, is a leading manufacturer and supplier of Stainless Steel 321 Hollow Bars, offering premium-quality materials designed for strength, durability, and high-temperature corrosion resistance. Stainless Steel 321, stabilized with titanium, prevents intergranular corrosion during welding or prolonged exposure to elevated temperatures, making it ideal for demanding industrial applications. Latham Steel ensures that each hollow bar meets stringent international standards, providing reliable, precise, and long-lasting performance for industries such as chemical processing, petrochemical, aerospace, and power generation.

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SS 321 Hexagon Hollow Bars

SS 321 Hollow Bar

Stainless Steel 321 Hollow Hex Rod

What is Stainless Steel 321 Hollow Bar

Stainless Steel 321 Hollow Bars are composed of approximately 17–19% chromium, 9–12% nickel, and a small addition of titanium for stabilization. This composition enhances resistance to intergranular corrosion, pitting, and oxidation at high temperatures. Mechanically, 321 hollow bars exhibit tensile strength of 515–750 MPa, yield strength of 205–450 MPa, and good elongation, while maintaining toughness and dimensional stability under thermal stress. The hollow bar form offers reduced weight and ease of fabrication while ensuring uniform mechanical performance.

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Stainless Steel 321 Hollow Bar Specifications

Standard	ASTM A276 / A479, ASME SA276 / A479
Round Bar Size	3mm~ 800mm
Square Bar Size	4mm* 4mm ~100mm* 100mm
Flat Bar Size	2mm ~ 100mm
Hex Bar Size	2mm ~ 100mm
Angle Size	3mm* 20mm* 20mm~ 12mm* 100mm* 100mm
Thickness	50 mm to 6000 mm Long
Length	1 To 6 Meters, Custom Cut Length
Form	Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc

Stainless Steel 321 Hollow Bar cHEMICAL COMPOSITIONS

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	5(C+N) – 0.70 max

Stainless Steel 321 Hollow Bar mechanical properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

Stainless Steel 321 Hollow Bar Physical Properties

Denstiy lb_m/in³	Coefficient of Thermal Expansion (min/in)-°F		Thermal Conductivity BTU/hr-ft-°F	Specific Heat BTU/lb_m -°F	Modules of Elasticity (annealed)²-psi
at 68 °F	at 68 – 212°F	at 68 – 1832°F	at 200°F	at 32 – 212°F	in tension (E)
0.286	9.2	20.5	9.3	0.12	28 x 10⁶

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Stainless Steel 321 Hollow Bar Types

ASTM A276 Stainless Steel 321 Hollow Bar New Zealand, SS 321 Hollow Bars United kingdom, Stainless Steel S32100 Hollow Bar Hamilton S32109 Hollow Bars Tauranga, Stainless Steel 1.4541 Hollow Bar Wellington, 1.4878 Hollow Rods Auckland, Steel 321 Hollow Bars Exporter Dunedin, ASME SA479 SS 321 Hollow Bar New Zealand, 321 Stainless Steel Hollow Bar Hamilton Stainless Steel 321 Hollow Bar Manufacturer in Hamilton New Zealand.

Frequently Asked Questions (FAQ)

What are the key advantages of using SS 321 Hollow Bar in high-temperature applications?

SS 321 Hollow Bar offers excellent resistance to oxidation and corrosion at high temperatures, particularly in environments prone to scaling. Its stability in elevated temperatures and resistance to sensitization make it ideal for applications in heat exchangers and exhaust systems.

How does the addition of titanium in SS 321 enhance its resistance to intergranular corrosion?

The addition of titanium in SS 321 stabilizes carbon, preventing the formation of chromium carbides at grain boundaries. This reduces the risk of intergranular corrosion, improving the alloy's resistance to corrosion in high-temperature environments and aggressive chemical conditions.

What are the typical applications of SS 321 Hollow Bar in the aerospace and chemical industries?

In aerospace, SS 321 Hollow Bar is used for exhaust systems, jet engine components, and fuel systems due to its high-temperature resistance. In the chemical industry, it's used for heat exchangers, reactors, and piping in corrosive environments.

Stainless Steel 321 Hollow Bar Uses

Stainless Steel 321 Hollow Bars are widely used in furnace components, heat exchangers, turbine parts, exhaust systems, and chemical processing equipment. Their combination of high-temperature resistance, corrosion protection, and structural integrity ensures long-term reliability, minimal maintenance, and efficient operation in aggressive environments. Engineers and manufacturers prefer 321 hollow bars for critical applications requiring durable, high-performance stainless steel solutions capable of withstanding harsh industrial conditions.

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