Stainless Steel Pipes & Tubes

Stainless Steel TP 321 / 321H Seamless Tubes

ASTM A213 TP 321 SS Seamless Tubes Suppliers, Stainless Steel 321H Tubing Manufaturer, Stainless Steel 321 Cold Drawn Tubes Stockholder, SS 321H Tubing Exporter in india.

Stainess Steel 321 / 321H Seamless Tubes

MBM Tubes is one of the well-known manufacturer, stockist, exporter, stock holder and supplier of a qualitative range of Stainless Steel 321 Seamless Tubing that are designed as per international and national standard quality of raw materials. Our Stainless Steel Cold Drawn 321 Tubes is an excellent quality choice for demanding applications where higher strength and tighter tolerances are necessary. Our range of SS 321H Tubes is known for its high quality, zero defects and superior performance. Our SS 321 / 321H Seamless Tubes is a standard austenitic chromium nickel alloy with the addition of Titanium making it an excellent choice in elevated temperature environments.

Common applications of Stainless Steel 321 Tubing are Oil refinery equipment, Industrial Boilers, Pressure Vessels, Chemical and pharmaceutical equipment, Petrochemical refineries, and Chemical process heat exchangers. These premium qualities of SS 321H Tubing are used in industries like engineering, chemical, sugar and pharmaceutical, at length. We provide these SS 321H Seamless Tubes at standard and customised sizes in such a way that one can select accordingly.


Stainless Steel 321 / 321H Seamless Tubing Specification

Tube Range : 6.35 mm OD To 101.6 mm OD Guage: 25 SWG - 10 SWG

Outer Diameter : 3.00 mm - 219.10 mm

Wall Thickness : 0.40 mm - 12.70 mm

Schedules : 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH

Length : Upto 30 meters, Custom Cut Lengths

Specifications : ASTM A213 / ASTM SA213

Types : Round, Square, Rectangle, Coil, "U" Shape, Hydraulic & Honed Tubes


SS 321 S32100 1.4541
SS 321H S32109 1.4878


Stainless Steel DIN 1.4541 / 1.4878 Seamless Tubes Stockist, SS UNS S32100 / S32109 Seamless Tubing, SS 321 Cold Drawn Tubes, SS 321H Seamless Tubes, SS 321 Seamless Tubing in India.

Chemical Composition

SS 321 321H
Ni 09 - 12 09 - 12
N 0.10 0.10
Cr 17 – 19 17 - 19
C 0.08 max 0.04 - 0.08
Si 1 max 0.75 max
Mn 2 max 2 max
P 0.040 max 0.045 max
S 0.030 max 0.03 max
TI 4(C+N) 0.70 max

Mechanical Properties

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

Grade specifications

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
321H S32109 321S51 - 1.4878 X6CrNiTi18-10 - SUS 321H

Physical Properties (Room Temperature)

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (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

Marking of packages
Stainess Steel 321 Seamless Tubes Packaging

ASTM A213 TP321 Stainless Steel Seamless Tubes Packing

Stainess Steel 321H Seamless Tubes Packaging

ASTM A213 TP321H Stainless Steel Seamless Tubes Packing

Types of Stainless Steel TP 321 / 321H Seamless Tubing
    • Stainless Steel 321 Seamless Tubes
    • SS TP 321H Seamless Tubes
    • Stainless Steel 321 Tubes
    • SS 321 UNS S32100 Tubes
    • Stainless Steel 321 Cold Drawn Tubes
    • ASTM A 213 Stainless Steel 321 Seamless Tubes
    • DIN 1.4511 SS 321 Seamless Tubing
    • SS TP 321H Cold Drawn Tubes
    • AISI SS TP 321H Tubing
    • Stainless Steel 321 Tubing
    • SS UNS S32109 Seamless Tubing
    • Stainless Steel 321H Seamless Tubing
    • DIN 1.4878 Stainless Steel 321H Seamless Tubes

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