ASTM A312 TP321H Stainless Steel Seamless Pipe

ASTM A312 Tp321h is a high carbon version of the titanium stabilized austenitic stainless steel. It has 18% chromium and 8% nickel in the common composition and therefore is called as the 18/8 steel as well. Shengtian Group is a manufacturer and supplier of the ASTM A312 Gr.Tp321h pipe types in all kinds, scales and dimensions. There are different production methods such as electric fusion welding, electric resistant welding, cold drawing or hot rolling of the ASTM A312 Tp 321h pipes.
The titanium addition in the SA312 Tp321h material composition makes it stronger and more corrosion resistant. It also provides the material last longing life under even corrosive environments. The higher carbon content makes it tougher, but it can compromise the strength compared to the low carbon versions. Due to the increased toughness, it can perform well under cryogenic temperatures as well.

Stainless Steel Pipe 321H Pipe Sizes Metric

ASTM A312 TP321H Seamless Pipes

Size: 6NB - 1200NB
OD: 1/8" - 12" NPS
Thickness : 0.6 - 12.7 mm
Length: Single, Double Random & Cut Length

Standard Specification of ASTM A312 TP321H

Specification Chart	ASTM A312 / ASTM SA312
ASME Standard	ANSI/ASME B36.19M, ANSI/ASME B36.10M
Shapes and Types	Round, Square, Hydraulic, Rectangle, Honed
Most Selling types	Seamless, Welded, Fabricated, CDW, 100% X Ray Welded, ERW
Pipe End Bevel	Treaded On End, Plain One End, Bevel large end, Bevel both ends, Bevel one end, Beveled One End, Plain Both Ends, Beveled end, Bevel small end, Treaded Both Ends
Pipe TDC	Annealed and Pickled, Cold Drawn, Polished, Bright Annealed
Roughness and Surface Finish	2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements
Nominal Wall Thickness	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
We also offer	Export Packaging, Grooving, Polishing, Customer Tagging/ Marking, Machining, Destructive, Export Documentation, Destructive, Non Cutting, Ultrasonic Testing, Material testing, Threading, Color Coding, Threading, Beveling, MTR’s Available
How SS 321H pipe is marked?	Specification Grade Nominal Pipe Sizes Pipe Schedule or Wall Thickness Manufacturing Method (Seamless / Welded) Heat Number Manufacturer’s Name or Custom Logo - on request Marked Pipe Sample: ANSI B36.19 ASTM A312 TP321H 12" NB SCH 60S SEAMLESS HEAT NO. XXXX

TP321H Composition Standard

SS	321H
Ni	09 - 12
S	00.03 max
N	00.10
Cr	17 – 19
Si	00.75 max
Mn	2 max
C	00.04 - 0.08
P	00.045 max
TI	00.70 max

SA 312 TP 321H Equivalent Standard

MATERIAL	UNS	WERKSTOFF NR.
	USA	GERMAN
TP321H	S32109	1.4878

ASTM A312 covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.

　　Optional supplementary requirements are provided for pipe where a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and, when desired, it is permitted to specify in the order one or more of these supplementary requirements.

　　Nominal Pipe Size (NPS): 1/8, 1/4, 3/8, 1/2, 3/4, 1, 11/4, 11/2, 2, 21/2 inch

　　Outside Diameter: 10,3 - 73 mm (0,405 - 2,875 inch)

　　Wall Thickness: 1,73 - 7,01 (0,068 - 0,276 inch)

　　Notes:

　　Steel Grades - TP 304, TP 304L, TP 316, TP 321

　　Size of pipes in accordance with ANSI/ASME B36. 19M.

　　All technical requirements in accordance with ASTM A530.

　　Length tolerance of measured pipes is not greater than +10 mm.

　　The quality of pipes is ensured by manufacturing process and non-destructive test.

　　Intergranular corrosion test in accordance with ASTM A262, Practice E is available.

Sizes
inch	OD, mm	Wall Thickness,	Max. Length, м
1/8	10,3	1,73; 2,11	12
1/4	13,7	2,24; 3,02
3/8	17,1	2,31; 3,20
1/2	21,3	2,11; 3,73
3/4	26,7	2,87; 3,91
1	33,4	3,38; 4,55; 6,35	10
1 1/4	42,4	3,56; 4,85; 6,35
1 1/2	48,3	3,68; 5,03; 7,14
2	60,3	3,58; 3,91; 4,37; 4,78; 6,35; 6,94; 7,14
2 1/2	73,0	3,58; 3,95; 4,37; 4,78; 5,16; 5,49; 6,35; 7,01

Mechanical properties
Steel Grade	Tensile Strength, N/mm2 (min)	Yield Strength, N/mm2 (min)	Elongation, % (min)
TP304	515	205	35
TP304L	485	170	35
TP316	515	205	35
TP316L	485	170	35
TP321	OD < 17,1 mm - 515;	OD < 17,1 mm - 205;	35
TP321	OD > 17,1 mm - 485	OD > 17,1 mm - 170	35

Chemical Composition (%, max)
Steel Grade	C	Si	Mn	Cr	Ni	Mo	S	P
TP304	0,08	0,75	2	18 - 20	8-11	-	0,03	0,04
TP304L	0,035	0,75	2	18 - 20	8-13	-	0,03	0,04
TP316	0,08	0,75	2	16 - 18	11-14	2-3	0,03	0,04
TP316L	0,035	0,75	2	16 - 18	10-15	2-3	0,03	0,04
TP321	0,08	0,75	2	17 - 20	9-13	-	0,03	0,04

Shengtian Group is a manufacturer and supplier of the ASTM A312 Gr.Tp321h pipe types in all kinds, scales and dimensions. There are different production methods such as electric fusion welding, electric resistant welding, cold drawing or hot rolling of the ASTM A312 Tp 321h pipes.

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