ASTM A335 Grade P91 Alloy Steel Seamless Pipe

SA 335 P91 Seamless Pipe & Alloy Steel P91 Chrome Pipes Supplier

NACE certified P91 alloy steel welded pipes and ASTM A335 P91 Seamless Pipe at low Price

ASTM A335 P91 Pipe

ASTM A335 Grade P91 Alloy Steel Seamless Pipe

P91 Chrome Moly Pipe

Table of Content

Standard Specification Of ASTM A335 P91 Pipe
Types of ASTM A335 Grade P91 Alloy Steel Seamless Pipe
Sizes of P91 Chrome Moly Pipe
Weight of ASTM A335 P91 Alloy Steel Pipe
Schedule Chart of P91 Pipe
P91 Welded Pipe Pressure Rating
AS P91 Chrome Pipe Composition Chart
UNS K91560 Alloy Boiler Pipes Mechanical Strength
Equivalent of ASME SA335 P91 Pipe
Heat Treatment of Alloy Steel P91 ERW Pipe
A335 P91 material Properties
Schedule 40 P91 Seamless Pipe Creep Properties
AS P91 Heat Exchanger Pipe Price List

Standard Specification Of ASTM A335 P91 Pipe

Size in Inch	1/8NB TO 24NB inch
ASTM Standards	ASTM A 335, and ASME SA 335
Type	Seamless Pipe
Specialized in Size	Large Diameter Size
Outer Dimensions Chart	19.05milimeter - 114.3milimeter
Wall Thickness Chart	2.0milimeter - 14 milimeter
Length in milimeter	max 16000milimeter
Schedule Chart	Schedule 20 - XXS up to 250 milimeter thk.
Pipe Form	Round, Rectangular, Square, Hydraulic Etc.
Length	Single, Double Random & Cut to Length.
Pipe & Tube End	Plain, Beveled, Treaded.

Types of ASTM A335 Grade P91 Alloy Steel Seamless Pipe

Astm A335 p91 8 Inch Alloy Steel Pipe

4 Inch Schedule 40 Alloy ASTM A335 p91 Seamless Steel Pipe

3" SCH80 ASTM a335 p91 material alloy pipe

ASTM A335 p91 material seamless alloy steel pipe

ASME SA335 p91 24 inch hot rolled seamless steel pipe

73mm grade astm a335 p91 carbon steel seamless pipe

8 inch Alloy steel pipe A335 Gr.p91

ASTM A335 14 Inch p91 Sch160 Alloy Steel Pipe

Astm a335 p91 sch std seamless steel pipe

Stockist of ASTM A335 Gr P91 Welded Pipe, ASME SA335 Grade P91 ERW Pipes Sizes

Sizes of P91 Chrome Moly Pipe

ASTM A335 P91 Pipe OD mm	Pipe WT mm	in.	Sch	Kg/m
13.72	1.65	1/4	10S	0.50
13.72	2.24	1/4	40S	0.64
13.72	3.02	1/4	80S	0.81
17.15	1.65	3/8	10S	0.64
17.15	2.31	3/8	40S	0.86
17.15	3.20	3/8	80S	1.12
21.34	2.11	1/2	10S	1.02
21.34	2.77	1/2	40S	1.29
21.34	3.73	1/2	80S	1.65
26.67	2.11	3/4	10S	1.30
26.67	2.87	3/4	40S	1.71
26.67	3.91	3/4	80S	2.23
33.40	2.77	1	10S	2.13
33.40	3.38	1	40S	2.54
33.40	4.55	1	80S	3.29
33.40	6.352)	1	160	4.30
42.16	2.77	1¼	10S	2.73
42.16	3.56	1¼	40S	3.44
42.16	4.85	1¼	80S	4.53
42.16	6.352)	1¼	160	5.69
48.26	2.77	1½	10S	3.16
48.26	3.68	1½	40S	4.11
48.26	5.08	1½	80S	5.49
60.33	2.77	2	10S	3.99
60.33	3.91	2	40S	5.52
60.33	5.54	2	80S	7.60
60.33	8.742)	2	160	11.29
73.03	3.05	2½	10S	5.35
73.03	5.16	2½	40S	8.77
73.03	7.01	2½	80S	11.59
88.90	3.05	3	10S	6.56
88.90	5.49	3	40S	11.47
88.90	7.62	3	80S	15.51
88.90	11.132)	3	160	21.67
101.60	3.05	3½	10S	7.53
101.60	5.74	3½	40S	13.78
101.60	8.08	3½	80S	18.92
114.30	3.05	4	10S	8.50
114.30	6.02	4	40S	16.32
114.30	8.56	4	80S	22.67
114.30	13.492)	4	160	34.05
141.30	6.55	5	40S	22.10
141.30	9.53	5	80S	31.44
141.30	15.882)	5	160	49.87
168.28	3.4	6	10S	14.04
168.28	7.11	6	40S	28.69
168.28	10.97	6	80S	43.21
168.28	14.27	6	120	54.75
168.28	18.262)	6	160	68.59
219.08	8.18	8	40S	43.20
219.08	12.7	8	80S	65.63
219.08	18.23	8	120	91.30
219.08	23.012)	8	160	112.97

Weight of ASTM A335 P91 Alloy Steel Pipe

NPS	Outside Diameter		Wall Thickness			Weight	Weight
NPS	in	mm	in	mm	Sched	kg/Mtr	Lb/ft
1/2″	0.840	21	0.109	2.769	40 STD	1.268	0.851
			0.147	3.734	80 STD	1.621	1.088
3/4″	1.050	27	0.113	2.870	40 STD	1.684	1.131
			0.154	3.912	80 STD	2.195	1.474
1″	1.315	33	0.133	3.378	40 STD	2.501	1.679
			0.179	4.547	80 STD	3.325	2.172
1 1/4″	1.660	42	0.140	3.556	40 STD	3.385	2.273
			0.191	4.851	80 STD	4.464	2.997
1 1/2″	1.900	48	0.145	3.683	40 STD	4.048	2.718
			0.200	5.080	80 STD	5.409	3.361
2″	2.375	60	0.154	3.912	40 STD	5.441	3.653
			0.218	5.537	80 STD	7.480	5.022
2 1/2″	2.875	73	0.203	5.516	40 STD	8.629	5.793
			0.276	7.010	80 STD	11.411	7.661
3″	3.500	89	0.216	5.486	40 STD	11.284	7.576
			0.300	7.620	80 STD	15.272	10.253
4″	4.500	114	0.237	6.020		16.073	10.790
			0.337	8.560		22.318	14.983
6″	6.625	168	0.188	4.775		19.252	12.924
			0.203	5.516		20.739	13.923
			0.219	5.563		22.318	14.983
			0.250	6.350		25.354	17.021
			0.280	7.112	40 STD	58.263	18.974
			0.312	7.925		31.334	21.036
			0.375	9.525		37.285	25.031
			0.432	10.973	80 XHY	42.561	28.573
			0.500	12.700		48.719	32.708
8″	8.625	219	0.188	4.775		25.233	16.940
			0.203	5.156		27.198	18.259
			0.219	5.563		29.286	19.661
			0.250	6.350	20	33.308	22.361
			0.277	7.036	30	36.786	24.696
			0.322	8.179	40	42.352	28.554
			0.375	9.525		49.216	33.041
			0.406	10.312	60	53.085	35.638
			0.500	12.700	80 XHY	64.627	43.388
10″	10.750	273	0.188	4.775		31.588	21.207
			0.219	5.563		36.689	24.631
			0.250	6.350	20	41.759	28.035
			0.307	7.798	30	51.002	34.240
			0.344	8.738		56.946	38.231
			0.365	9.271	40 STD	63.301	40.483
			0.438	11.125		71.852	48.238
			0.500	12.700	60 XHY	81.530	54.735
			0.594	15.088	80	95.969	64.429
12″	12.750	324	0.188	4.775		37.570	25.222
			0.219	5.563		43.657	29.309
			0.250	6.350		49.713	33.375
			0.281	7.137		55.739	37.420
			0.312	7.925		61.735	41.445
			0.375	9.525		73.824	49.562
			0.406	10.312		79.727	53.525
			0.500	12.700		97.438	65.415
			0.562	14.275		108.966	73.154
14″	14.000	356	0.188	4.775		41.308	27.732
			0.219	5.563		48.012	32.233
			0.250	6.350	20	54.685	36.713
			0.281	7.137		61.327	41.172
			0.312	7.925		67.939	45.611
			0.375	9.525	STD	81.281	54.568
			0.438	11.125	40	94.498	63.441
			0.500	12.700	XHY	107.381	72.090
			0.625	15.875		132.983	89.278
16”	16.000	406	0.188	4.775		47.290	21.748
			0.219	5.563		54.980	36.910
			0.250	6.350	10	62.639	42.053
			0.281	7.137		70.268	47.174
			0.312	7.925	20	77.866	52.275
			0.344	8.738		85.677	57.519
			0.375	9.525	30 STD	93.213	62.578
			0.438	11.125		108.433	72.797
			0.500	12.700	40 XHY	123.289	82.770
18″	18.000	457	0.219	5.563		61.948	41.588
			0.250	6.350		70.593	47.393
			0.281	7.137		79.208	53.176
			0.312	7.925	20	87.792	58.939
			0.375	9.525	STD	105.144	70.588
			0.438	11.125	30	122.369	82.152
			0.500	12.700	XHY	139.198	93.450
			0.562	14.275	40	155.904	104.666
			0.625	15.875		172.754	115.978
20″	20.000	508	0.250	6.350		78.547	52.733
			0.282	7.163		88.458	59.386
			0.312	7.925		97.719	65.604
			0.375	9.525	20 STD	117.075	78.598
			0.438	11.125		136.305	91.508
			0.500	12.700	30 XHY	155.106	104.130
			0.594	15.088	40	183.378	123.110
			0.625	15.875		192.640	129.328
			0.688	17.475		211.368	141.901
24″	24.000	610	0.250	6.350		94.456	63.413
			0.281	7.137		106.029	71.183
			0.312	7.925		117.573	18.932
			0.375	9.525	20 STD	140.938	64.618
			0.438	11.125		164.176	110.219
			0.500	12.700	XHY	186.923	125.490
			0.625	15.875		232.410	156.028
			0.688	17.475	40	255.148	171.293
			0.750	19.050		277.401	186.233
30″	30.000	762	0.250	6.350		118.318	79.433
			0.281	7.137		132.851	89.189
			0.312	7.925	10	147.353	98.925
			0.375	9.525	STD	176.731	118.648
			0.438	11.125		205.983	138.286
			0.500	12.700	20 XHY	234.647	157.530
			0.625	15.875	30	292.066	196.078
			0.688	17.475		320.817	215.380
			0.750	19.050		348.988	234.293
36″	36.000	914	0.250	6.350		142.180	95.453
			0.281	7.137		159.672	107.196
			0.312	7.925	10	177.133	118.918
			0.375	9.525	STD	215.525	142.678
			0.438	11.125		247.790	166.353
			0.500	12.700	20 XHY	282.372	198.570
			0.625	15.875		351.723	236.128
			0.688	17.475		386.487	259.467
			0.750	19.050		420.576	282.353
42″	42.000	1067	0.312	7.925		206.914	138.911
			0.375	9.525	STD	248.319	166.708
			0.500	12.700	XHY	33.097	221.610
			0.750	19.050		492.163	330.413
48″	48.000	1219	0.375	9.525	STD	284.112	190.738
			0.438	11.125		331.404	222.487
			0.500	12.700	XHY	377.822	253.650
			0.750	19.050		563.750	378.473
			0.875	22.225		655.969	440.383

Schedule Chart of P91 Pipe

1/8" IPS(.405" O.D.)	3 1/2" IPS( 4.000" O.D.)
SCH 40, 80	SCH 10, 40, 80, 160, XXH
1/4" IPS(.540" O.D.)	4" IPS(4.500" O.D.)
SCH 10, 40, 80	SCH 10, 40, 80, 160, XXH
3/8" IPS(.675" O.D.)	5" IPS( 5.563" O.D.)
SCH 10, 40, 80	SCH 10, 40, 80, 160, XXH
1/2" IPS(.840" O.D.)	6" IPS(6.625" O.D.)
SCH 5, 10, 40, 80, 160, XXH	SCH 5, 10, 40, 80, 120, 160, XXH
3/4" IPS(1.050" O.D.)	8 ” IPS(8.625" O.D.)
SCH 10, 40, 80, 160, XXH	SCH 5, 10, 40, 80, 120, 160, XXH
1" IPS:(1.315′ O.D.)	10" IPS(10.750" O.D.)
SCH 5, 10, 40, 80, 160, XXH	SCH 10, 20, 40, 80 (.500), TRUE 80(.500)
1-1/4" IPS(1.660" O.D.)	12" IPS(12.750" O.D.)
SCH 10, 40, 80, 160, XXH	SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)
1-1/2" IPS(1.900" O.D.)	14" IPS(14.000" O.D.)
SCH 10, 40, 80, 160, XXH	SCH10 (.188), SCH40 (.375)
2" IPS(2.375" O.D.)	16" IPS(16.000" O.D.)
SCH 10, 40, 80, 160, XXH	SCH10(.188), SCH40(.375)
2 1/2" IPS(2.875" O.D.)	18" IPS (18.000" O.D.)
SCH 10, 40, 80, 160, XXH	SCH-40 (.375)
3" IPS( 3.500" O.D.)
SCH 5, 10, 40, 80, 160, XXH

P91 Welded Pipe Pressure Rating

Pipe O.D. (in.)	Wall Thickness of Pipe (inches)
	.028	.035	.049	.065	.083	.095	.109	.120
	Working Pressure (psig)
1/8	7900	10100
1/4	3700	4800	7000	9500
5/16		3700	5400	7300
3/8		3100	4400	6100
1/2		2300	3200	4400
3/4			2200	3000	4000	4600
1				2200	2900	3400	3900	4300

AS P91 Chrome Pipe Composition Chart

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

UNS K91560 Alloy Boiler Pipes Mechanical Strength

Tensile Strength , MPa	A335 P91 Yield Strength, MPa	Elongation, %	A335 P91 Hardness, HB
585 min	415 min	20 min	250 max

Equivalent of ASME SA335 P91 Pipe

ASTM	ASME	A335 Gr P91 Equivalent Material	JIS	UNS
A335 P91	SA335 P91	T91, K90901, X10CrMoVNb9-1, 1.4903	G 3458	K91560

Heat Treatment of Alloy Steel P91 ERW Pipe

	P5, P9, P11, and P22
Grade Chet	Heat Treatment Type	Normalize Temp Range F [C]	Annealing and Tempering Temp Range F [C]
P5 (b,c)	Isothermal or Full Anneal
	Temper and Normalize	*****	1250 [675]
	Subcritical Anneal (P5c only)	*****	1325 - 1375 [715 - 745]
P9	Isothermal or Full Anneal
	Temper and Normalize<	*****	1250 [675]
P11	Isothermal or Full Anneal
	Temper and Normalize	*****	1200 [650]
P22	Isothermal or Full Anneal
	Temper and Normalize	*****	1250 [675]
P91	Temper and Normalize	1900-1975 [1040 - 1080]	1350-1470 [730 - 800]
	Temper and Quench	1900-1975 [1040 - 1080]	1350-1470 [730 - 800]

Check ASME SA335 Grade P91 Alloy Steel Seamless Pipe Physical Properties

A335 P91 material Properties

Temperature T ° C / ° F (° C / F)	Specific heat J / kgK (Btu / lb ° F)	Thermal conductivity W / mK (Btu · in / ft 2 · h · ° F)	Electrical resistance μΩ · cm (Ω circ / ft)
20/68	460 (-)	26 (-)	218 (-)
200/392	207 (-)	11.3 (-)
400/752	190 (-)	12.0 (-)
500/932	30 (-)	12.3 (-)
600/1112	12.6 (-)
650/1202	162 (-)	12.7 (-)

Schedule 40 P91 Seamless Pipe Creep Properties

Temp.	Time limit	Time limit	Creep strength
Rp0.2	10 000h	100 000h
° C	N / mm 2 / ksi	N / mm 2 / ksi	N / mm 2 / ksi
20/68	450/65
100/212	410 / 59.4
300/572	360 / 52,2
500/932	300 / 43.5	289 / 41.9	258 / 37.4
550/1022	270 / 39.1	199 / 28,8	166 / 24.0
600/1112	215 / 31,1	122 / 17.6	94 / 13.6
650/1202	70 / 10,1	49 / 7,1
ksi values are calculated

temperature	0.2% proof stress at higher temperatures
° C / ° F	Rp 0.2
Mpa / ksi
100/212	410 / 59.4
200/392	380 / 55,1
300/572	360 / 52,2
400/752	340 / 49,3
500/932	300 / 43.5
600/1112	215 / 31,1

View ASTM A335 Grade P91 Chrome Moly Alloy Pipe, P91 Heat exchanger, Boiler Tubes Updated price List

AS P91 Heat Exchanger Pipe Price List

Size	MSL Make	ISMT make	JSL Make
1/2"	4,265.71	4,253.35	4,27.06
3/4"	4,04.12	4,036.76	4,051.47
1"	3,897.06	3,889.71	3,904.41
1.25"	3,852.94	3,845.59	3,860.29
1.5"	3,750.00	3,742.65	3,757.35