321 Stainless Steel Pipe

321 stainless steel pipe

ASTM A312 TP321H Seamless Pipe and 321 Stainless Steel Tubing manufacturer in India

Manufacturer and exporter of SA 213 TP 321 Stainless Steel Exhaust Tubing for automotive and marine exhaust applications

AISI 321 stainless steel pipe is austenitic stainless steel it is similar to Grade 304 but the addition of titanium is at least five times the carbon content and provides good corrosion resistance. After exposure to temperatures in the chromium carbide precipitation range of 800 - 1500°F it provides excellent resistance to intergranular corrosion. It has higher creep and stress rupture properties than Grade 304 and 304L and it resists oxidation to 1500°F and it acquires good low temperature toughness. It cannot be hardened by heat treatment but only by cold working. It can be easily processed and welded by standard fabrication practices. 321 seamless pipe is useful for applications such as chemical processing, pharmaceutical production, food processing, aerospace, petroleum refining, etc. It exhibits good corrosion resistance as compared to 304 stainless steel. ASTM A312 TP321 can be readily formed and drawn, however high pressure are required and more springback is encountered than for ferritic stainless steel and carbon steel. It hardens quickly and may acquire annealing after severe forming.

SS 321H Seamless Pipe is procured form a solid steel i.e in sheet or bar form and is formed into a round solid shape which is known as “billets” which is then heated and formed over such as piercing rod to create a hollow pipe or shell. 321h stainless steel pipe is the higher carbon version of the alloy. It is developed to enhance creep resistance and for high strength at temperature above 1000°F. The presence of certain alloying elements can make it more difficult for ASME SA 312 321H ERW Pipe to form than other austentic stainless steel grades such as Grade 301, Grade 304 and Grade 305.

Table Of Content


Standard Specification Of 321 Stainless Steel Pipe

Stockist and supplier of SA 312 TP 321 Stainless Steel Tubes in polished or bright Annealed conditions, view price list, weight and dimensions chart

ASTM / ASME Specification ASTM A312 / ASTM SA 312
Dimensional Standards ANSI/ASME B36.19M, ANSI/ASME B36.10M
Different Types and Shapes Hydraulic, Square, Hex, Honed, Round, Rectangle
Most Common types 100% X Ray Welded, Seamless, CDW, Fabricated, ERW, Welded
Pipe End Types Plain One End, Plain Both Ends, Bevel small end, Treaded On End, Beveled end, Bevel one end, Bevel large end, Beveled One End, Treaded Both Ends, Bevel both ends
Technical Conditions of The Pipe Cold Drawn, Bright Annealed, Annealed and Pickled, Polished
Mechanical Surface Finishing 2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements
Wall Wall Thickness Schedule Chart
 SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Other Services we provide
  • Draw & Expansion as per client's required Size & Length
  • Polish (Electro & Commercial) Heat Treatment
  • Annealed & Pickled
  • Bending
  • Sand Blasting
  • Machining Etc.
Marking available for TP321 Pipes
  1. Specification
  2. Grade
  3. Nominal Pipe Sizes
  4. Pipe Schedule or Wall Thickness
  5. Manufacturing Method (Seamless / Welded)
  6. Heat Number
  7. Supplier/ Manufacturer’s Name or Custom Logo - on request

Marked Pipe Sample: ANSI B36.19 ASTM A312 TP321 12" NB SCH 40S SEAMLESS HEAT NO. XXXX

Frequently Used ASTM A312 TP321H Seamless Pipe Types

321 stainless steel pipe

321 stainless steel pipe

aisi 321 stainless steel pipe

aisi 321 stainless steel pipe

ASTM A312 TP321 seamless pipe

ASTM A312 TP321 seamless pipe

321h stainless steel pipe

321h stainless steel pipe

ASME SA 312 321H ERW Pipe

ASME SA 312 321H ERW Pipe

321 Stainless Steel Exhaust Tubing

321 Stainless Steel Exhaust Tubing

AISI 321 Stainless Steel Pipe Price List

Type Description USA FOB Price Malaysia FOB Price Europe FOB Price Singapore FOB Price Saudi Arabia (KSA) FOB Price
    Unit Per mtr Unit Per mtr Unit Per mtr Unit Per mtr Unit Per mtr
321 Stainless Steel Pipe Size : 8"NB x SCH.80S US $ 203.91 Malaysia Ringgit 829.91 Euro 171.28 Singapore Dollar 273.24 Saudi Riyal 764.66
321 Stainless Steel Tubing Size : 3.1/2" OD x 4mm Thk US $ 28.69 Malaysia Ringgit 116.77 Euro 24.10 Singapore Dollar 38.44 Saudi Riyal 107.59

ASME SA 312 321H ERW Pipe Dimension Table

Manufacturer of 321H Stainless Steel Pipe in .065 or .049 wall thickness
Pipe Size
(in)		 Diameter
(in)
mm		 Nominal Thickness
(in)
mm		 Transverse Areas
(in2)
mm2		 Length of Pipe
(ft per sq. foot of surface)		 Volume
(ft3/ft)		 Weight Number of Threads per inch of Screw
External Internal External Internal Steel External Surface
(ft)		 Internal Surface
(ft)		 (lb/ft) (kg/m)
1/8 0.405 0.27 0.07 0.13 0.06 0.07 9.43 14.20 0.0004 0.24 0.36 27
¼ 0.540 0.36 0.09 0.23 0.10 0.13 7.07 10.49 0.0007 0.42 0.63 18
3/8 0.675 0.49 0.09 0.36 0.19 0.17 5.66 7.75 0.0013 0.57 0.84 18
½ 0.840 0.62 0.11 0.55 0.30 0.25 4.55 6.14 0.0021 0.85 1.26 14
¾ 1.050 0.82 0.11 0.87 0.53 0.33 3.64 4.64 0.0037 1.13 1.68 14
1 1.315 1.05 0.13 1.36 0.86 0.49 2.90 3.64 0.0060 1.68 2.50 11 ½
1 ¼ 1.660 1.38 0.14 2.16 1.50 0.67 2.30 2.77 0.0104 2.27 3.38 11 ½
1 ½ 1.900 1.61 0.15 2.84 2.04 0.80 2.01 2.37 0.0141 2.72 4.04 11 ½
2 2.375 2.07 0.15 4.43 3.36 1.08 1.61 1.85 0.0233 3.65 5.43 11 ½
2 ½ 2.875 2.47 0.20 6.49 4.79 1.70 1.33 1.55 0.0333 5.79 8.62 8
3 3.500 3.07 0.22 9.62 7.39 2.23 1.09 1.25 0.0513 7.58 11.27 8
3 ½ 4.000 3.55 0.23 12.56 9.89 2.68 0.95 1.08 0.0687 9.11 13.56 8
4 4.500 4.03 0.24 15.90 12.73 3.17 0.85 0.95 0.0884 10.79 16.06 8
5 5.563 5.05 0.26 24.30 20.00 4.30 0.69 0.76 0.1389 14.61 21.74 8
6 6.625 6.07 0.28 34.47 28.89 5.58 0.58 0.63 0.2006 18.97 28.23 8
8 8.625 7.98 0.32 58.42 50.02 8.40 0.44 0.48 0.3552 28.55 42.49 8
10 10.750 10.02 0.37 90.76 78.85 11.90 0.36 0.38 0.5476 40.48 60.24 8
12 12.750 11.94 0.41 127.64 111.90 15.74 0.30 0.32 0.7763 53.60 79.77 8
14 14.000 13.13 0.44 153.94 135.30 18.64 0.27 0.28 0.9354 63.00 93.75 8
16 16.000 15.00 0.50 201.05 176.70 24.35 0.24 0.25 1.2230 78.00 116.08 8
18 18.000 16.88 0.56 254.85 224.00 30.85 0.21 0.23 1.5550 105.00 156.26 8
20 20.000 18.81 0.59 314.15 278.00 36.15 0.19 0.20 1.9260 123.00 183.05 8
24 24.000 22.63 0.69 452.40 402.10 50.30 0.16 0.17 2.7930 171.00 254.48 8

Sizes of 321H Stainless Steel Pipe

NPS OD SCH 5S SCH 10S SCH 40S SCH 80S
1/4 13.72 – 1.65 2.24 3.02
3/8 17.15 – 1.65 2.31 3.2
1/2 21.34 1.65 2.11 2.77 3.73
3/4 26.67 1.65 2.11 2.87 3.91
1 33.4 1.65 2.77 3.38 4.55
1.25 42.16 1.65 2.77 3.56 4.85
1.5 48.26 1.65 2.77 3.68 5.08
2 60.33 1.65 2.77 3.91 5.54
2.5 73.03 2.11 3.05 5.16 7.01
3 88.9 2.11 3.05 5.49 7.62
3.5 101.6 2.11 3.05 5.74 8.08
4 114.3 2.11 3.05 6.02 8.56
5 141.3 2.77 3.4 6.55 9.53
6 168.28 2.77 3.4 7.11 10.97
8 219.08 2.77 3.76 8.18 12.7
10 273.05 3.4 4.19 9.27 12.7
12 323.85 3.96 4.57 9.53 12.7
14 355.6 3.96 4.78 9.53 12.7
16 406.4 4.19 4.78 9.53 12.7
18 457.2 4.19 4.78 9.53 12.7
20 508 4.78 5.54 9.53 12.7
22 558.8 4.78 5.54 – –
24 609.6 5.54 6.35 9.53 12.7
26 660.4 – – – –
28 711.2 – – – –
30 762 6.35 7.92 – –

321 Stainless Steel Exhaust Tubing Chemical Compatibility

Stocking distributor of 321 SS Pipe in various shape and sizes including round, square and rectangle
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
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Analysis of SA 312 TP 321 Stainless Steel Tubes

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 %

SS 321H Seamless Pipe Equivalent Material Grade

STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

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