ASTM A335

At UNIACERO, we pride ourselves on offering the finest ASTM A335 seamless ferritic alloy-steel pipes designed for high-temperature applications. Engineered for resilience, these pipes are optimal for bending, flanging, fusion welding, and a myriad of forming operations. Our pipes not only meet but often exceed the requirements of the ASTM A335 standard, ensuring top-tier performance for your operations. Rely on our expertise to provide you with pipes that are synonymous with quality and reliability.

ASTM A335 Specification

Our ASTM A335 steel pipes exhibit the highest standards in dimensions, production procedures, steel grades, and more. They are furnished with specialized surface coatings that ensure durability and longevity. The pipes come in varied end types, tailored to the needs of different industries. With advanced joint methods and superior machining services on offer, we ensure that every pipe is of unparalleled standard, catering to the unique requirements of our esteemed clientele.

Standard	ASTM A335
Procedure	SMLS
Dimensions	21.3mm – 610mm
	1/2″ – 24″
	DN15 – DN600
Thickness	3.2mm – 76mm
	SCH 10 -SCH 160
Unit Length	6 meters, 12 meters or customized.
Steel Grade	ASTM A335 P1	ASTM A335 P5c	ASTM A335 P15	ASTM A335 P91
	ASTM A335 P2	ASTM A335 P9	ASTM A335 P21	ASTM A335 P92
	ASTM A335 P5	ASTM A335 P11	ASTM A335 P22	ASTM A335 P122
	ASTM A335 P5b	ASTM A335 P12	ASTM A335 P23	ASTM A335 P911
Surface Coating	Varnishing, Black, Oiling, Hot Dip Galvanizing
End Type	Square cut, Bevelled, Threaded, Grooved
Joint Method	Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe Machining	Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

ASTM A335 Dimension Table

Our ASTM A335 pipes have been meticulously designed to conform to international standards. Each dimension reflects careful engineering aimed at meeting the demanding needs of high-temperature service. We ensure the integrity and precision of each dimension, from diameter to wall thickness, promising our clients a product that fits seamlessly into their operations.

Steel Pipe Dimensions Chart ANSI B36. 10 & 36.19
Nominal Pipe Size		Outside Diameter (mm)	Nominal Wall Thickness Schedule
NPS	DN	OD	SCH 20	SCH 30	SCH Sth	SCH 40	SCH 60	SCH XS	SCH 80	SCH 100	SCH 120	SCH 140	SCH 160	SCH XXS
1/8	6	10.3	–	1.45	1.73	1.73	–	2.41	2.41	–	–	–	–	–
1/4	8	13.7	–	1.85	2.24	2.24	–	3.02	3.02	–	–	–	–	–
3/8	10	17.1	–	1.85	2.31	2.31	–	3.20	3.20	–	–	–	–	–
1/2	15	21.3	–	2.41	2.77	2.77	–	3.73	3.73	–	–	–	4.78	7.47
3/4	20	26.7	–	2.41	2.87	2.87	–	3.91	3.91	–	–	–	5.56	7.82
1	25	33.4	–	2.9	3.38	3.38	–	4.55	4.55	–	–	–	6.35	9.09
1 1/4	32	42.2	–	2.97	3.56	3.56	–	4.85	4.85	–	–	–	6.35	9.70
1 1/2	40	48.3	–	3.18	3.68	3.68	–	5.08	5.08	–	–	–	7.14	10.15
2	50	60.3	–	3.18	3.91	3.91	–	5.54	5.54	–	–	–	8.74	11.07
2 1/2	65	73	–	4.78	5.16	5.16	–	7.01	7.01	–	–	–	9.53	14.02
3	80	88.9	–	4.78	5.49	5.49	–	7.62	7.62	–	–	–	11.13	15.24
3 1/2	90	101.6	–	4.78	5.74	5.74	–	8.08	8.08	–	–	–	–	–
4	100	114.3	–	4.78	6.02	6.02	–	8.56	8.56	–	11.13	–	13.49	17.12
5	125	141.3	–	–	6.55	6.55	–	9.53	9.53	–	12.70	–	15.88	19.05
6	150	168.3	–	–	7.11	7.11	–	10.97	10.97	–	14.27	–	18.26	21.95
8	200	219.1	6.35	7.04	8.18	8.18	10.31	12.70	12.70	15.09	18.26	20.62	23.01	22.23
10	250	273.0	6.35	7.80	9.27	9.27	12.70	12.70	15.09	18.26	21.44	25.40	28.58	25.40
12	300	323.8	6.35	8.38	9.53	10.31	14.27	12.70	17.48	21.44	25.40	28.58	33.32	25.40
14	350	355.6	7.92	9.53	9.53	11.13	15.09	12.70	19.05	23.83	27.79	31.75	35.71	–
16	400	406.4	7.92	9.53	9.53	12.70	16.66	12.70	21.44	26.19	30.96	36.53	40.49	–
18	450	457	7.92	11.13	9.53	14.27	19.05	12.70	23.83	29.36	34.93	39.67	45.24	–
20	500	508	9.53	12.70	9.53	15.09	20.62	12.70	26.19	32.54	38.10	44.45	50.01	–
22	550	559	9.53	12.70	9.53	–	22.23	12.70	28.58	34.93	41.28	47.63	53.98	–
24	600	610	9.53	14.27	9.53	17.48	24.61	12.70	30.96	38.89	46.02	52.37	59.54	–
26	650	660	12.70	–	9.53	–	–	12.70	–	–	–	–	–	–
28	700	711	12.70	15.88	9.53	–	–	12.70	–	–	–	–	–	–
30	750	762	12.70	15.88	9.53	–	–	12.70	–	–	–	–	–	–
32	800	813	12.70	15.88	9.53	17.48	–	12.70	–	–	–	–	–	–
34	850	864	12.70	15.88	9.53	17.48	–	12.70	–	–	–	–	–	–
36	900	914	12.70	15.88	9.53	19.05	–	12.70	–	–	–	–	–	–
38	950	965	–	–	9.53	–	–	12.70	–	–	–	–	–	–
40	1000	1016	–	–	9.53	–	–	12.70	–	–	–	–	–	–
42	1050	1067	–	–	9.53	–	–	12.70	–	–	–	–	–	–
44	1100	1118	–	–	9.53	–	–	12.70	–	–	–	–	–	–
46	1150	1168	–	–	9.53	–	–	12.70	–	–	–	–	–	–
48	1200	1219	–	–	9.53	–	–	12.70	–	–	–	–	–	–

Chemical Requirements of ASTM A335

For us, quality is paramount. Every batch of our ASTM A335 pipes undergoes stringent chemical analysis to ensure that they meet and often exceed the required compositions. The pipes boast a well-balanced mix of elements, providing them with the strength and resilience that our clients have come to expect from us.

Chemical Requirements
Grade	UNS DesignationA	Composition, %
Grade	UNS DesignationA	Carbon	Manganese	Phosphorus max	Sulfur max	Silicon	Chromium	Molybdenum	Others
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 max	0.30–0.60	0.025	0.025	0.50 max	4.00–6.00	0.45–0.65	–
P5b	K51545	0.15 max	0.30–0.60	0.025	0.025	1.00–2.00	4.00–6.00	0.45–0.65	–
P5c	K41245	0.12 max	0.30–0.60	0.025	0.025	0.50 max	4.00–6.00	0.45–0.65	-B
P9	S50400	0.15 max	0.30–0.60	0.025	0.025	0.25– 1.00	8.00– 10.00	0.90– 1.10	–
P11	K11597	0.05–0.15	0.30–0.60	0.025	0.025	0.50– 1.00	1.00– 1.50	0.44–0.65	–
P12	K11562	0.05–0.15	0.30–0.61	0.025	0.025	0.50 max	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 max	2.65–3.35	0.80– 1.06	–
P22	K21590	0.05–0.15	0.30–0.60	0.025	0.025	0.50 max	1.90–2.60	0.87– 1.13	–
P23	K41650	0.04–0. 10	0.10–0.60	0.030 max	0.010 max	0.50 max	1.90–2.60	0.05–0.30	V 0.20–0.30 Cb 0.02–0.08 B 0.0005–0.006 N 0.030 max AI 0.030 max W 1.45-1.75
P91	K91560	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 0.04 max Cb 0.06–0.10
P92	K92460	0.07–0.13	0.30–0.60	0.02	0.01	0.50 max	8.50-9.50	0.30-0.60	V 0. 15–0.25 N 0.03–0.07 Ni 0.40 max Al 0.04 max Cb 0.04–0.09 W 1.5–2.00 B 0.001–0.006
P122	K92930	0.07–0.14	0.70 max	0.02	0.01	0.50 max	10.00-12.50	0.25-0.60	V 0.15–0.30 W 1.50–2.50 Cu 0.30– 1.70 Cb 0.04–0.10 B 0.0005–0.005 N 0.040–0. 100 Ni 0.50 max Al 0.040 max
P911	K91061	0.09–0.13	0.30–0.60	0.020 max	0.01 max	0.10-0.50	8.50-10.50	0.90-1.10	V 0.18–0.25 Ni 0.40 max Cb 0.060–0.10 B 0.0003–0.006 N 0.04–0.09 Al 0.04 max W 0.90– 1.10
A New designation established in accordance with Practice E 527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS). B Grade P 5c shall have a titanium content of not less than 4 times the carbon content and not more than 0.70 %; or a columbium content of 8 to 10 times the carbon content.

Mechanical Requirements of ASTM A335

Each of our ASTM A335 pipes is a testament to mechanical excellence. Subjected to rigorous mechanical tests, these pipes exhibit stellar tensile strength, hardness, and other mechanical properties. We understand the dynamic needs of industries and thus ensure that our pipes withstand the test of time and performance.

Tensile Requirements
Mechanical Properties	Grade
Mechanical Properties	P1, P2	P12	P23	P91	P92, P911	P122	All Others
Tensile Strength	min
ksi	55	60	74	85	90	90	60
MPa	380	415	510	585	620	620	415
Yield Strength	min
ksi	30	32	58	60	64	58	30
MPa	205	220	400	415	440	400	205

Steel Grades in ASTM A335

We offer a diverse range of steel grades under the ASTM A335 standard, from P1 to P5, P9, P11, P12, to P91. Each grade has its unique characteristics, making them apt for various industries. For instance, our P11/P22 and P91/92 grades are favored by power stations, while P5 and P9 are preferred in the petrochemical sector. Trust in our expertise to guide you to the right grade for your needs.