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Murdoch Road, Bilston, West Midlands, WV14 7HG

T: +44 (0)1902 404 221

sales@dswilletts.co.uk

321 (1.4541)

Stainless steel, acknowledged for its versatility and durability, plays a crucial role in diverse industries. Within the spectrum of stainless steel grades, 321 stands out as a compelling option, offering impressive corrosion resistance, prolonged durability, and an attractive appearance.

Distinguished for its unique characteristics, Grade 321 stainless steel takes a prominent place in the stainless steel market. As an austenitic chromium-nickel alloy, it is well-regarded for its resilience and corrosion resistance. Commonly known as “18/10 Ti” stainless steel, reflecting its composition of 18% chromium, 10% nickel, and the addition of titanium, Grade 321 excels in applications where elevated temperatures are a consideration.

Grade 321 provides a reliable solution, ensuring durability and corrosion resistance in various industrial settings.

Key Benefits of 321

Corrosion Resistance:
321 stainless steel offers excellent corrosion resistance. As a result, many industries choose it for environments where materials regularly face corrosive elements. For example, aerospace, chemical processing, and automotive manufacturing often rely on this steel because it performs well in challenging conditions.

Heat Resistance:
In addition, titanium stabilisation gives 321 stainless steel strong heat resistance. Because of this, the material keeps its strength and structure even at high temperatures. Therefore, it works well in exhaust systems, high-temperature processing equipment, and other demanding applications.

Weldability and Formability:
Furthermore, 321 stainless steel is easy to weld and form. Unlike some high-carbon stainless steels, it allows manufacturers to shape and join components without difficulty. As a result, engineers can create complex parts and structures more easily.

321 Stainless Tanks

Material Equivalents

UNS S32100
EN1.4541
ASTM321 (Type 321)

Mechanical Properties

Proof Stress 0.2% (MPa)515 MPa (min) - 695 MPa (max)
Tensile Strength 205 MPa - 260 MPa
Elongation A540%
Hardness (Maximum)HB : 217
HRB : 95

Chemical Composition

ElementSymbolMin (%)Max (%)
CarbonC-0.08
ManganeseMn-2.0
PhosphorusP-0.045
SulphurS-0.03
SiliconSi-0.75
ChromiumCr17.019.0
NickelNi9.012.0
Titanium Ti5 × (C + N) min0.70
Nitrogen N-0.10
IronFeBalance Balance

Common Industries

  • Aerospace & Defence
  • Chemical processing
  • Petrochemical
  • Oil and gas
  • Refining
  • Power generation
  • Automotive
  • Industrial furnaces
  • Heat treatment
  • High‑temperature engineering

Our 321 Stock

Our 321 Stock in the UK ranges from 1MM to 50MM Thick – Available in Plates, Sheets & Profiles. Sections, Pipes and Tubes of this grade are also available.

All our material is supplied fully certified with EN10204 3.1 or 3.2 certificates as needed. Additional client or third party inspections of material is also available on request with all our material.

We also have our own dedicated quality department that take regular audits of our products and internal processes to ensure that the highest of quality is maintained throughout. To demonstrate this, we are certified to ISO 9001.