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ASTM A335 Grade P91 NACE Alloy Seamless Pipes Specification Alloy Seamless Pipes (ASTM A335 Grade P91 NACE) offered by us are made available in ASTM A335 Grades. Made as per IBR standards, these are mainly used in boiler operations. Further, our expertise lies in offering these pipes in various size range as well as in customized parameters as per boiler piping requirements. Sourced from quality conscious manufacturers, we also offer our clients the option of adding their own mark on them.

Materials: 20G.ASTM A106B. ASME SA106B. 12Cr1MoV.15CrMo. T91.P91.P22.P11.T22.T12.P9.P5.P1.P92.35CrMo. Cr5Mo. 16Mn. WB36. 27SiMn. 10CrMo910.

American Society of Mechanical Engineers Standard: ASME SA106, ASME SA53, ASME SA335, ASME SA210, ASME SA333, sASME SA213

American Society for Testing and Materials Standard: ASTM A106. ASTM A53. ASTM A333. ASTM A210. ASTM A213. ASTM A335.

pipe production standards in accordance with HG, GB, SH, HGJ, JB,ANSI, JIS, DINand other international standards.

Alloy Steel Pipes & Tubes:

ASTM A335 P11 alloy pipe
ASTM A335 P22 alloy pipe
A335 P5 High pressure pipes
ASTM A335 P9 alloy pipe
ASTM A335 P91 alloy pipe
ASTM A335 P92 alloy pipes
ASTM A333 Gr.1 seamless pipe
ASTM A333 Gr.4 seamless pipe
ASTM A333 Gr.6 seamless pipe
ASTM A213 Alloy tubes
ASTM A213 T9 alloy pipes
ASTM A213 T5 alloy pipes
ASTM A213 T11 alloy pipes
ASTM A213 T12 alloy pipes
ASTM A213 T91 alloy pipes
ASTM A213 T22 alloy pipes
ASTM A335 Grade P22 Alloy Steel Pipe
ASME SA335 Grade P5
ASTM A335 P11
ASTM A335 P12
ASTM A335 Grade P91 NACE
ASME SA213 Grade T11
SA335 Grade P9
Alloy Steel P9 Seamless Pipes
Alloy Steel Pipes/ Chrome Moly Tubes
Alloy Steel T91 Seamless Pipes
ASTM A213 T2, T11, T22, T91, T92 Pipes
ASTM A335 P5, P9, P11, P22, P91 Pipes

Alloy Steel Pipe ASTM A 335 Grade P – 11	Alloy Steel Tube ASTM 213 Grade T – 11
Alloy Steel Pipe ASTM A 335 Grade P – 12	Alloy Steel Tube ASTM 213 Grade T – 12
Alloy Steel Pipe ASTM A 335 Grade P – 22	Alloy Steel Tube ASTM 213 Grade T – 22
Alloy Steel Pipe ASTM A 335 Grade P – 9	Alloy Steel Tube ASTM 213 Grade T – 5
Alloy Steel Pipe ASTM A 335 Grade P – 9	Alloy Steel Tube ASTM 213 Grade T – 9
Alloy Steel Pipe ASTM A 335 Grade P – 5	Alloy Steel Tube ASTM 213 Grade T – 9 A
Alloy Steel Pipe BS 3604 Grade 620 – 440	Alloy Steel Tube ASTM 213 Grade T – 2
Alloy Steel Pipe BS 3604 Grade 621	Alloy Steel Tube ASTM 213 Grade T – 1
Alloy Steel Pipe BS 3604 Grade 622	Alloy Steel Tube ASTM 213 Grade T – 1 B
Alloy Steel Pipe BS 3604 Grade 625	Alloy Steel Tube DIN 17175 15 Mo 3
Alloy Steel Pipe BS 3604 Grade 629 – 470	Alloy Steel Tube DIN 17175 13 Cr Mo 44
Alloy Steel Pipe BS 3604 Grade 629 – 590	Alloy Steel Tube DIN 17175 10 Cr Mo 910
Alloy Steel Pipe BS 3604 Grade 660	Alloy Steel Tube DIN 17175 14 Mo V 63
Alloy Steel Pipe BS 3604 Grade 762	Alloy Steel Tube DIN 17175 X 20 Cr Mo V 121
	Alloy Steel Tube BS 3059 Grade 243
Alloy Steel Tube BS 3059 Grade 620 – 460
Alloy Steel Tube BS 3059 Grade 622 – 490
Alloy Steel Tube BS 3059 Grade 629 – 470
Alloy Steel Tube BS 3059 Grade 629 – 590
Alloy Steel Tube BS 3059 Grade 762

ASTM A335/A335M-P91 high temperature ferritic alloy steel seamless P91

Standard	Steel grade	Yield strengthM P a	Tensile M Pa	Elongation Min (vertical bar specimen )% ①	Elongation Min (round bar specimens )%	Squash
ASTM A335/A335M-03 “high temperature ferritic alloy steel seamless”	P1, P2	≥ 205	≥ 380	30	22	H
P12	≥ 220	≥ 415	30	22	H
P23	≥ 400	≥ 510	20	20	H
P91	≥ 415	≥ 585	20	20	H
Other	≥ 205	≥ 415	30	22	H
Note: ① using the vertical bar specimens, the wall thickness of less than 8mm, each reduction 0.8mm, P23, P91 should subtract the base elongation of 1.0%, 1.5%, minus all other grades.
Standard	Steel grade	Yield strengthM P a	Tensile M Pa	Elongation%	Squash

ASTM A500-2001 “Structural carbon steel cold-formed and shaped circular cross-section welded steel pipe and seamless steel pipe.”	Grade A	≥ 228	≥ 310	≥ 25	H
Grade B	≥ 290	≥ 400	≥ 23	H
Grade C	≥ 317	≥ 427	≥ 21	H
Grade D	≥ 250	≥ 400	≥ 23	H
Standard	Steel grade	Yield strengthM P a	Tensile M Pa	Elongation%	Squash	Flaring
ASTM A556M-96 “water heater with carbon steel cold drawn seamless steel tubes.”	A2	≥ 180	≥ 320	≥ 35	H	H
B2	≥ 260	≥ 410	≥ 30	H	H
C2	≥ 280	≥ 480	≥ 30	H	H
Standard	Steel grade	Yield strength	Tensile strength	Elongation (%) ①

JIS G 3473-1988 “Carbon steel cylinder”	STC370	≥ 215	≥ 370	≥ 30	Note: ① thickness <8mm pipe, elongation is reduced by the minimum thickness at 1mm, to subtract the elongation of 1.5%.
STC440	≥ 305	≥ 440	≥ 10
STC510A	≥ 380	≥ 510	≥ 10
STC510B	≥ 380	≥ 510	≥ 15
STC540	≥ 390	≥ 540	≥ 20
STC590A	≥ 490	≥ 590	≥ 10
STC590B	≥ 490	≥ 590	≥ 15
Standard	Steel grade	Yield strengthM P a	Tensile M Pa	Elongation %①	Squash

JIS G 3467-1988 “furnace with steel.”	STF410	≥ 245	≥ 410	≥ 24	0.08	Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
STFA12	≥ 205	≥ 380	≥ 24
STFA22	≥ 205	≥ 410	≥ 24
STFA23	≥ 205	≥ 410	≥ 24
STFA24	≥ 205	≥ 410	≥ 24
STFA25	≥ 205	≥ 410	≥ 24
STFA26	≥ 205	≥ 410	≥ 24
Standard	Steel grade	Yield strengthM P a	Tensile M Pa	Elongation %①	Squash

JIS G 3462-1988 “boilers, heat exchangers used in steel pipe.”	STBA12	≥ 205	≥ 380	≥ 30	0.08
Other	≥ 205	≥ 410	≥ 30
Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard	Steel grade	Wall thickness mm	Yield strength M Pa	Tensile M Pa	Elongation% ①	Flattening / Flaring
JIS G 3461-1988 “boilers, heat exchangers used in carbon steel.”	STB340	≥ 8	≥ 175	≥ 340	≥ 35	H
STB410	≥ 8	≥ 255	≥ 410	≥ 25	H
STB510	≥ 8	≥ 295	≥ 510	≥ 25	H
Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard	Steel grade	Yield strengthM P a	Tensile M Pa	Elongation (vertical bar specimen ) %①	Elongation ( round bar specimens )%	Squash	Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
JIS G 3456-1988 “high carbon steel pipes.”	STPT370	≥ 215	≥ 370	≥ 30	≥ 28	0.08
STPT410	≥ 245	≥ 410	≥ 2 5	≥ 24	0.07
STPT480	≥ 275	≥ 480	≥ 2 5	≥ 22
Standard	Steel grade	Yield strength	Tensile strength	Elongation ( tube sections and longitudinal strips sample) % ①	Elongation (round bar specimens )%	Squashed or bent
JIS G 3455-1988 “high carbon steel pipes.”	STS370	≥ 215	≥ 370	≥ 30	≥ 28	H
STS410	≥ 245	≥ 410	≥ 25	≥ 24	H
STS480	≥ 275	≥ 480	≥ 25	≥ 22	H
Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.
Standard	Steel grade	Yield strengthM P a	Tensile M Pa	Elongation ( vertical bar specimen )% ①	Elongation ( round bar specimens )%	Squash
JIS G 3454-1988 “pressure pipes carbon steel pipe.”	STPG370	≥ 215	≥ 370	≥ 30	≥ 28	0.08
STPG410	≥ 245	≥ 410	≥ 2 5	≥ 24	0.07
Note: ① using vertical bar specimens, the wall thickness of less than 8mm, each reduced 1mm, from the basic minimum elongation shall be subtracted 1.5%.

P91 alloy tube

Material	Implementation of standards	Specification	Quantity
P91	GB5310-2008	426 * 18	3
P91	ASTMA335-95a	426 * 18	2
P91	GB5310-2008	426 * 16	3
P91	ASTMA335-95a	426 * 14.2	3
P91	GB5310-2008	426 * 14	3
P91	GB5310-2008	426 * 13	2
P91	GB5310-2008	426 * 13	5
P91	GB5310-2008	426 * 12	2
P91	ASTMA335-95a	426 * 12	5
P91	ASTMA335-95a	426 * 11	5
P91	GB5310-2008	426 * 11	3
P91	ASTMA335-95a	426 * 10	5
P91	ASTMA335-95a	406.4 * 80	3
P91	GB5310-2008	406.4 * 65	3
P91	ASTMA335-95a	406.4 * 50	3
P91	GB5310-2008	406.4 * 50	5
P91	GB5310-2008	406.4 * 45	2
P91	GB5310-2008	406.4 * 40	3
P91	GB5310-2008	406.4 * 32	1

ASTM A335/ASME SA 335 P5, P9, P11, P22, P91 Seamless Pipes, Tubes Chemical Composition %

Grade	C	Mn	P	S	Si	Cr	Mo
P5	0.15max	0.30-0.60	0.025	0.025	0.50 max	4.00-6.00	0.45-0.65
P9	0.15 max	0.30-0.60	0.025	0.025	0.25-1.00	8.00-10.00	0.90-1.10
P11	0.05-0.15	0.30-0.60	0.025	0.025	0.50-1.00	1.00-1.50	0.44-0.65
P22	0.05-0.15	0.30-0.60	0.025	0.025	0.50 max	1.90-2.60	0.87-1.13
P91	0.08-0.12	0.30-0.60	0.02	0.01	0.20-0.50	8.00-9.50	0.85-1.05
	V 0.18-0.25	N 0.03-0.07	Ni 0.40 max	Al 0.02 max	Cb 0.06-0.10	Ti 0.01 max	Zr 0.01 max

ASTM A335/ASME SA 335 P5, P9, P11, P22, P91 Seamless Pipes, Tubes Mechanical Properties

Mechanical Properties
Grade	Tensile strength(MPa)	Yield strength(MPa)	Elongation(%)	Impact energy(J)	Hardness
P11	≥ 415	≥ 205	≥ 22	≥ 35	≤ 163HB
P12	≥ 415	≥ 220	≥ 22	≥ 35	≤ 163HB
P22	≥ 415	≥ 205	≥ 22	≥ 35	≤ 163HB
P5	≥ 415	≥ 205	≥ 22	≥ 35	≤ 187HB
P91	585~760	≥ 415	≥ 20	≥ 35	≤ 250HB
P92	≥ 620	≥ 440	≥ 20	≥ 35	250HB

Tolerance for ASTM A335/ASME SA 335 P5, P9, P11, P22, P91 Seamless Pipes

NPS	OD Tolerance	NPS	WT Tolerance
1/8″ ≤ NPS ≤ 1 1/2″	+/- 0.4	1/8″ ≤ NPS ≤ 2 1/2″ , All T/D ratios.	+20%, -12.5%
1 1/2 < NPS ≤ 4″	+/- 0.79	NPS ≥ 2 1/2″ , T/D ≤ 5%	+22.5%, -12.5%
4″ < NPS ≤ 8″	+1.59, -0.79	NPS ≥ 2 1/2″ , T/D > 5%	+15%, -12.5%
8″ < NPS ≤ 12″	+2.38, -0.79	(T= Specified Wall Thickness; D = Specified Outside Diameter)
NPS > 12″	+/- 1%

ASTM A335/ASME SA 335 P5, P9, P11, P22, P91 Seamless Pipes, Tubes application

Seamless Tubes for Manufacturing Boilers
Seamless Tubes for Superheaters
Seamless Tubes for Heat Exchangers etc.

Whether you need ASTM A213 T2, T11, T12, T22, T91, T92 Seamless Tubes, standard length and diameter pipes and tubing or you need high strength, high tensile, heavy wall linepipe requirements for deep sour wells, drilling, offshore drilling and production, arctic exploration and production, or you need ASTM A213 T2, T11, T12, T22, T91, T92 Seamless Tubes for natural gas, oil or water transport, then Canada Steel And Casing Imports Inc. can meet the demands of your company.

ASTM A / ASME SA 335 – Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

ASTM A / ASME SA 335 specification covers seamless ferritic alloy-steel pipe for high-temperature service. The pipe mainly used for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Grade P2 and P12 steel pipes shall be made by coarse-grain melting practice. The steel material shall conform to chemical composition, tensile property, and hardness requirements. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices. The range of pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practices. The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.

Trade Name	Grade	UNS #	Pipe	Forged / Bored Pipe *
1 1/4 Chrome	P11	K11597	A335 / SA335	A369 / SA369
2 1/4 Chrome	P22	K21590	A335 / SA335	A369 / SA369
5 Chrome	P5	K41545	A335 / SA335	A369 / SA369
9 Chrome	P9	S50400	A335 / SA335	A369 / SA369
P91	P91	K91560	A335 / SA335	A369 / SA369
P92	P92	K92460	A335 / SA335	A369 / SA369

Elongation Requirements

Calculated Minimum Elongation Values
Elongation in 2 in. or 50 mm, min %
Wall Thickness	P5, P9, P11, P22	P91
in.	mm	Longitudinal	Transverse	Longitudinal
5/16 (0.312)	8	30	20	20
9/32 (0.281)	7.2	28	19	19
1/4 (0.250)	6.4	27	18	18
7/32 (0.219)	5.6	26		17
3/16 (0.188)	4.8	24		16
5/32 (0.156)	4	22		15
7/8 (0.125)	3.2	21		14
3/32 (0.094)	2.4	20		13
1/18 (0.062)	1.6	18		12

Mechanical Tests Specified

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Hardness Test:	P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Notes for Bend Test:	For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
	Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
	The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.
	The inside diameter of the bend shall be 1 inch [25 mm].
Hydrostatic Test	Each length of pipe shall be Hydro tested, at option of manufacture nondestructive electric testing can be used.

ASTM A335 Grade P91 NACE