| Stainless Steel | Tradename | UNS no. | Werkstoff No. | Density (g/cm3) |
| 321 | 321 Stainless Steel | S32100 | 1.4541 | 7.92 |
| 321H | 321H Stainless Steel | S32109 | 1.4878 | 7.92 |
|
Yaang is a leading manufacturer and supplier of stainless steel 321 tubes, pipes, fittings, flanges, bars, fasteners, castings and others.
Stainless Steel Grade 321 is a common austenitic 18/8 stainless steel alloy, with the addition of titanium, making it a good choice in high temperature environments of up to 900° C. 321 stainless steel has good welding and forming capabilities and is widely used in operating temperature environments in excess of 500° C. Stainless steel 321H, commonly referred as UNS S32109, is the higher carbon version of the 321 grade, to provide higher temperature strength.
321/321H stainless steel pipes, stainless steel tubes, stainless steel bar, stainless steel fittings, stainless steel flanges are mainly used in manufacturing heat exchangers, pressure vessels, pharmaceutical and chemical processing equipments. 321 grade plates can be supplied in No. 1 and 2B finish. Other special finishes can also be made available on demand.
Stainless Steel 321/321H Specifications
321/321H Stainless Steel Seamless & Welded Pipe and Tubes: ASTM A312, ASTM A213, ASTM A249
321/321H Stainless Steel Forgings: ASTM A182
Stainless Steel 321 Chemical Composition, %
C
|
Mn
|
Si
|
P
|
S
|
Cr
|
Ni
|
Ti
|
N
|
0.08 max.
|
2.00 max.
|
0.75 max.
|
0.045 max.
|
0.03 max.
|
17.0 – 19.0
|
9.0-12.0
|
5 x (C+N) min.
(0.70max.)
|
0.10
|
|
Stainless Steel 321H Chemical Composition, %
C
|
Mn
|
Si
|
P
|
S
|
Cr
|
Ni
|
Ti
|
N
|
0.04 – 0.10
|
2.00 max.
|
0.75 max.
|
0.045 max.
|
0.03 max.
|
17.0 – 19.0
|
9.0-12.0
|
5 x (C+N) min.
(0.70max.)
|
0.10
|
|
Physical & Mechanical Properties of Stainless Steel 321
|
321
|
Density
|
7.92
|
Melting Range,℃
|
1398-1446
|
Elongation %
|
40
|
Tensile Strength (Mpa)
|
515
|
Yield Strength (Mpa)
|
205
|
Hardness (Brinell)
|
217
|
|
* Technical specifications included herein should be used as a guideline only
Stainless Steel 321/321H Pipes, Tubes / Tubing, and Butt Weld Fittings
321/321H stainless steel pipes and stainless steel tubes are available in both seamless and welded form in OD and NB sizes. In addition to standard sizes, which are available in stock, our specialty is to manufacture and supply custom size 321/321H cold drawn seamless tubes from our factory.
321/321H stainless steel pipes and stainless steel tubes can be offered in random lengths of up to 6meters long or cut to a specific length as ordered. We also offer a complete range of stainless steel 321/321H grade butt weld fittings including 321 elbow, 321 bends, 321 tees, reducers and caps.
Stainless Steel 321/321H Seamless, Stainless Steel Welded Pipe/ Tube, and Fittings Dimensions
| Out diameter | Wall thickness | Length | |
| 321 Pipe NB Sizes | 1/4 “ ~ 16” | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | Upto 6 Meters | |
| 321 Butt Weld Fittings NB Sizes | 1/2″ ~ 12” | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | - | |
| 321 Seamless Pipes (Custom Sizes) | 5.0mm ~ 203.2mm | As per requirement | Upto 6 Meters | |
| 321 Welded Pipes (in Stock + Custom Sizes) | 5.0mm ~ 1219.2mm | 1.0 ~ 15.0 mm | Upto 6 Meters |
|
