ASTM A335 P91 Seamless Pipe-Bhawal Steel Agency

Buy ASTM A335 P91 Alloy Steel Seamless Pipe, A335 P91 Welded Pipe at Best price

Bhawal Steel Agency is a steel manufacturer, and supplier specialized in ASTM P91 seamless pipe, among other products. We're attempting to create a strong line of steel products that are both affordable and long-lasting. We offer the most affordable pricing for grade P91 seamless tubes, commonly used in boiler tubes, general engineering applications, and other heat treating applications.

ASTM P91 is a low carbon version alloy when compared to other P grades alloys. In general, alloy pipes contain more immense proportions than regular carbon steel pipes, with alloying elements such as molybdenum, chromium, and nickel. Low-alloy steel, according to ASTM. However, adding a higher proportion of alloying elements (nickel and chromium) to the steels transforms them into higher alloy steels, such as Hastelloy, monel, and Inconel. For high stress and high-temperature applications, alloy steel pipes are extensively used in the energy industry. Carbon 0.05-0.12%, manganese from 0.30-0.60%, silicon up to 1%, chromium up to 9.5%, and molybdenum and silicon like other elements are the chemical composition of grade P91 seamless pipe. The mechanical properties of ASTM A335 P91 seamless pipes have excellent results, such as tensile strength equals 585 Mpa and yielding strength equals 415 Mpa. ASTM F9, F11, F22, F91 have almost similar mechanical and chemical properties, which shall be joined or welded in any environment with the least effort.

ASTM P91 seamless alloys pipes are widely used across power plant industries, refineries, petrochemical plants, hydrocrackers, cokers, oil field services, and high heat treating equipment, and many more. We use high-quality raw material to produce seamless steel pipes and tubes, and all products are adequately tested before being out for deliveries.

SA335 P91 Pipes Standard Sizes And Specifications

Specialized in	Sizes in Large Diameter
OD	19.05 milimeter – 114.3 milimeter
WT	2.0 milimeter – 14 milimeter
Length	maximum 16000 milimeter
Form	Square, Hydraulic, Round, Rectangular, Etc.
Standard	SA335 P91, ASTM A335 P91
Thickness	From 3 to 12 milimeter
Size	From 1/2 NB upto 36 NB
Schedule	Schedule 40, 80, 160, XS, XXS
Tolerance	Cold rolled pipe: +/-0.05 milimeter Cold drawn pipe: +/-0.1 milimeter
Craft	Cold drawn / Cold rolled
Type	ERW / Fabricated / Seamless / Welded
Length	Double Random, Cut Length, Single Random, .
Specialized in	SA335 P91
Additional Testing	NACE TM0177, H2 SERVICE, NACE MR0175, IBR, NACE TM0284, SSC TEST, HIC TEST, etc.

SA335 P91 Pipes Size Chart In Mm

NB	Size	OD	40S	5S	10S	S10	S20	S40	S60	XS/80S	S80	S100	S120	S140	S160	XXS
NB	Size	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
	1/8	10.29			1.2			1.73			2.41
	1/4	13.72			1.7			2.24			3.02
	3/8	17.15			1.7			2.31			3.2
15	1/2	21.34	2.8	1.7	2.1			2.77		3.73	3.73				4.78	7.47
20	3/4	26.67	2.9	1.7	2.1			2.87		3.91	3.91				5.56	7.82
25	1	33.4	3.4	1.7	2.8			3.38		4.55	4.55				6.35	9.09
32	1 1/4	42.16	3.6	1.7	2.8			3.56		4.85	4.85				6.35	9.7
40	1 1/2	48.26	3.7	1.7	2.8			3.68		5.08	5.08				7.14	10.2
50	2	60.33	3.9	1.7	2.8			3.91		5.54	5.54				9.74	11.1
65	2 1/2	73.03	5.2	2.1	3.1			5.16		7.01	7.01				9.53	14
80	3	88.9	5.5	2.1	3.1			5.49		7.62	7.62				11.1	15.2
90	3 1/2	101.6	5.7	2.1	3.1			5.74		8.08	8.08
100	4	114.3	6	2.1	3.1			6.02		8.56	8.56		11.1		13.5	17.1
125	5	141.3	6.6	2.8	3.4			6.55		9.53	9.53		12.7		15.9	19.1
150	6	168.3	7.1	2.8	3.4			7.11		10.97	11		14.3		18.3	22
200	8	219.1	8.2	2.8	3.8		6.4	8.18	10.3	12.7	12.7	15.1	19.3	20.6	23	22.2
250	10	273.1	9.3	3.4	4.2		6.4	9.27	12.7	12.7	15.1	19.3	21.4	25.4	28.6	25.4
300	12	323.9	9.5	4	4.6		6.4	10.3	14.3	12.7	17.5	21.4	25.4	28.6	33.3	25.4
350	14	355.6	9.5	4	4.8	6.4	7.9	11.1	15.1	12.7	19.1	23.8	27.8	31.8	35.7
400	16	406.4	9.5	4.2	4.8	6.4	7.9	12.7	16.7	12.7	21.4	26.2	31	36.5	40.5
450	18	457.2	9.5	4.2	4.8	6.4	7.9	14.3	19.1	12.7	23.8	29.4	34.9	39.7	45.2
500	20	508	9.5	4.8	5.5	6.4	9.5	15.1	20.6	12.7	26.2	32.5	38.1	44.5	50
550	22	558.8	9.5	4.8	5.5	6.4	9.5		22.2	12.7	28.6	34.9	41.3	47.6	54
600	24	609.6	9.5	5.5	6.4	6.4	9.5	17.5	24.6	12.7	31	38.9	46	52.4	59.5
650	26	660.4	9.5			7.9	13			12.7
700	28	711.2	9.5			7.9	13			12.7
750	30	762	9.5	6.4	7.9	7.9	13			12.7
800	32	812.8	9.5			7.9	13	17.5		12.7
850	34	863.6	9.5			7.9	13	17.5		12.7
900	36	914.4	9.5			7.9	13	19.1		12.7

ASME SA335 Grade P91 Pipe 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

ASTM A335 P91 NACE MR0175 Pipe Standards

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
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
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
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
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	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%.
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	0.07
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%.

ASTM A335 P91 Chrome Pipe Composition Composition

Grade	UNS	C≤	Mn	P≤	S≤	Si≤	Cr	Mo
P1	K11522	0.10~0.20	0.30~0.80	0.025	0.025	0.10~0.50	–	0.44~0.65
P2	K11547	0.10~0.20	0.30~0.61	0.025	0.025	0.10~0.30	0.50~0.81	0.44~0.65
P5	K41545	0.15	0.30~0.60	0.025	0.025	0.50	4.00~6.00	0.44~0.65
P5b	K51545	0.15	0.30~0.60	0.025	0.025	1.00~2.00	4.00~6.00	0.44~0.65
P5c	K41245	0.12	0.30~0.60	0.025	0.025	0.50	4.00~6.00	0.44~0.65
P9	S50400	0.15	0.30~0.60	0.025	0.025	0.50~1.00	8.00~10.00	0.44~0.65
P11	K11597	0.05~0.15	0.30~0.61	0.025	0.025	0.50~1.00	1.00~1.50	0.44~0.65
P12	K11562	0.05~0.15	0.30~0.60	0.025	0.025	0.50	0.80~1.25	0.44~0.65
P15	K11578	0.05~0.15	0.30~0.60	0.025	0.025	1.15~1.65	–	0.44~0.65
P21	K31545	0.05~0.15	0.30~0.60	0.025	0.025	0.50	2.65~3.35	0.80~1.60
P22	K21590	0.05~0.15	0.30~0.60	0.025	0.025	0.50	1.90~2.60	0.87~1.13
P91	K91560	0.08~0.12	0.30~0.60	0.020	0.010	0.20~0.50	8.00~9.50	0.85~1.05
P92	K92460	0.07~0.13	0.30~0.60	0.020	0.010	0.50	8.50~9.50	0.30~0.60

A335 Gr P91 Pipes Composition Standard

Si, %	Cr, %	C, %	Mo, %	Mn, %	P, %	N, %	S, %	V, %	Ni, %	Nb, %	Al, %
0.2 to 0.5	8.0 to 9.5	0.08 to 0.12	0.85 to 1.05	0.3 to 0.6	0.02	0.03 to 0.07	0.01	0.18 to 0.25	0.4	0.06 to 0.10	0.04

ASTM A335 P91 Pipes Mechanical Strength Table

Elongational	Tensile Properties	HB	Yield Properties
20	585	250	415

Equivalent Material Grade Of SA335 Gr P91 Pipes

UNS	ASTM	Equivalent material	ASME
K91560	A335 P91	K90901, T91, 1.4903, X10CrMoVNb9-1	SA335 P 91

ASTM	ASME	JIS G 3458	UNS	BS	DIN	ISO	ABS	NK	LRS
A335 P9	SA335 P9	STPA 26	S50400	3604 P1 629-470		2604 II TS38

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ASTM A335 P91 Seamless Pipe