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SS 321 Welded Pipe, Stainless Steel 321 UNS S32100 Seamless Pipes & Tubes

The LG pipes and tubes is a Mumbai based company actively trading, supplying, and stocking the stainless steel 321 pipe along with its other steel product. We provide customized products fabricated with best in class raw materials and better services at competitive rates. The stainless steel 321 grade pipe is made to order as per the said specifications of clients, with different thicknesses, sizes, dimensions, and shapes.

Type 321 grade of stainless steel pipe has a thickness ranging from 0.4mm to 30.00.mm, size ranging from 1/8” to 48”, it comes in seamless, welded, cold drawn, hot finished, and other forms. While It is only built in round, square, and rectangular shapes. The stainless steel 321 grade pipe shares similar chemical and mechanical properties with other stainless steel grades, like the similar yield and tensile strength of 205MPa and 515MPa respectively. While in different conditions where polythionic acid stress corrosion attacks the non stabilized austenitic alloys, type 321 grade of steel helps resistance against it.

The stainless steel 321 grade is known as a stabilized austenitic steel alloy which is equivalent to the 304 grade of stainless steel but with higher addition of titanium to it, which is 5 times more of the carbon content. This added element helps the product resist inter granular corrosion and offers operating in higher temperatures up to 900 degrees C as the chromium carbide precipitation is eliminated.

Including various sectors like petrochemical, food processing, oil and gas refineries, marine, and other industries actively use the stainless steel 321 grade pipes for their various needs daily. While the company delivers the stainless steel 321 grade pipe along with their other products across the globe in different countries and pan India.

321 grade stainless steel pipes goes under rigorous quality checks as per the industry standards. Only after all the tests and check we dispatch the product, with on-time delivery and better service. All the products along with the stainless steel 321 grade are industry certified, which assures higher durability and sustainable product life.

Grade DIN UNS SUS Inox
SS 321 1.4541 S32100 321 321
  • Specifications –ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
  • Size – Seamless 321 Pipes & Tubes – 1/2″ NB -24″ NB
  • ERW 321 Pipes & Tubes – 1/2″ NB – 24″ NB
  • EFW 321 Pipes & Tubes – 6″ NB – 100″ NB
  • Wall Thickness – Schedule 5S – Schedule XXS.
Dimensions : ASTM, ASME and API
Schedule : SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless / ERW / Welded / Fabricated / LSAW Pipes
Length : Single Random, Double Random & Cut Length.
Form : Round, Square, Rectangular, Hydraulic Etc.

Composition ranges for stainless steel 321 grade

Grade C Mn Si P S Cr Mo Ni N Other
321 min.max –0.08 2.00 0.75 0.045 0.030 17.019.0 9.012.0 0.10 Ti=5(C+N)0.70

Mechanical properties of stainless steel 321 grade

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
321 515 205 40 95 217

Physical Properties of Stainless Steel 321 Grade

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100°C (J/kg.K) Electrical Resistivity (n.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
321 8027 193 16.6 17.2 18.6 16.1 22.2 500 720

Grade specifications for stainless steel 321 grade

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
321 S32100 321S31 58B, 58C 1.4541 X6CrNiTi18-10 2337 SUS 321
SS 321 S32100 1.4541