ASTM A335 / ASME SA335 / Seamless Ferritic Alloy Steel Pipe for High Temperature Service supplier & distributor in India

ASTM A 335M-89a / ASME SA 335

SEAMLESS FERRITIC ALLOY STEEL PIPE FOR HIGH TEMPERATURE SERVICE

This standard is issued under the fixed designation A 335/A 335M; the number immediately following the designation

indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses

indicates the year of last reapproval.

A superscript epsilon ( ε) indicates an editorial change since the last revision or reapproval.

1.Scope

1.1This specification covers nominal (average) wall seamless alloy-steel pipe intended for high-temperature service (Mote 1).

Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations,
and for fusion welding. Selection will depend upon design, service conditions, mechanical properties,
and high-temperature characteristics.

NOTE 1 ? Appendix X1 lists the sizes and wall thicknesses of pipe which may be obtained under current commercial practice.

1.2 Several grades of ferritic steels (Note 2) are covered. Their compositions are given in Table 1.

NOTE 2?Ferritic steels in this specification are defined as low and intermediate-alloy steels containing up to and including

1.3 Supplementary requirements (S1 to S7) of an optional nature are provided. These supplementary requirements call for
additional tests to be made, and when desired, shall be so stated in the order together with the number of such tests required.

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text,
the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with specification.

The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.

NOTE 3?The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such
traditional terms as "nominal diameter," "size," and "nominal size."

Grade	Remaks (Similar to JIS)
P1	(STPA12)
P2	(STPA20)
P5	(STPA25)
P5b	-
P5c	-
P7	-
P9	(STPA26)
P11	(STPA23)
P12	(STPA22)
P15	-
P21	-
P22	(STPA24)
P91	-

Chemical Requirements

Grade	UNS DesignationA	Composition,%							Others
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	...
P3	K41545	0.15max	0.30-0.60	0.025	0.025	0.50MAX	4.00-6.00	0.45-0.65	...
P5b	K51545	0.15max	0.30-0.60	0.025	0.025	1.00-2.00	4.00-6.00	0.45-0.65	...
P5c	K41245	0.12max	0.30-0.60	0.025	0.025	0.50MAX	4.00-6.00	0.45-0.65	...B
P9	S50400	0.15max	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	0.50MAX	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	0.50max	2.65-3.35	0.80-1.06	...
P22	K21590	0.05-0.15	0.30-0.60	0.025	0.025	0.50max	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	085-1.05	...
									V 0.18-0.25 N0.030-0.070 Ni 0.40max Cb 0.06-0.10

ANew designation established in accordance with Practuce E 527 and SAE J1086,

Practice for Numbering Metals and Alloys (UNS).

BGrade P5c 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.

At the request of the purchaser, an analysis of two pipes from each lot shall be made by the manufacturer.

A lot (Note 6) of pipe shall consist of the following :

NPS Designatior
Under 2	400 or fraction thereof
2 to 5	200 or fraction thereof
6 and over	100 or fraction thereof

NOTE 6 - A lot shall consist of the number of lengths specified in 7.1 of the same size

and wall thickness from any one heat of steel.

Tensile Requriements

Identification Symbol	P1, P2	P12	P91	All Others
Tensile strength, min;
ksi	55	60	85	60
MPa	380	415	585	415
Yield strength, min;
ksi	30	32	30	30
MPa	205	220	415	205
	Elongation Requriements, All grades except P91		P91
	Longitudinal	Transverse	Longitudinal	Transverse
Elongation in 2 in.or 50mm, (or 4D), min, %: Basic minimum elongation for wall 5/16 in.[8mm] and over in thickness, strip tests, and for all small sizes tested in full section	30	20	20	...
When standard round 2-in. or 50-mm gage length or proportionally smaller size specimen with 4D (4 times the diameter) is used	22	14	20	13
For strip tests a deduction for each 1/32-in. [0.8mm] decrease in wall thickness below 5/16 in.[8mm] from the basic minimum elongation of the following percentage points shall be made	1.50As	1.00A	1.00A	...
AThe following table gives the calculated minimum values :
Wall Thickness		Elongation in 2 in. or 50mm, min, %
Wall Thickness		All grades except P91		P91
in.	mm	Longitudinal	Transeverse	Longitudinal
5/16 (0.312)	8	30	20.0	20
9/32(0.281)	7.2	29	19.0	19
1/4(0.250)	6.4	27	18.0	18
7/32(0.219)	5.6	26	...	17
3/16(0.188)	4.8	24	...	16
5/32(0.156)	4	22	...	15
1/8(0.125)	3.2	21	...	14
3/32(0.094)	2.4	20	...	13
1/16(0.062)	1.6	18	...	12

NOTE - This table gives the computed minimum elongation values for each 1/32-in.[0.8mm]
decrease in wall thickness.

Where the wall thickness lies between two values above,

the minimum elongation value is determined by the following formula :

Direction of Test	EquationB
Longitudinal, all grades except P91	E = 48t + 15.00 [E = 1.87t + 15.00]
Transverse	E = 32t + 10.00 [E = 32t + 10.00]
Longitudinal, P91	E = 32t + 10.00 [E = 1.25t + 10.00]

where : E = elongation in 2 in. or 50 mm, %, and
t = actual thickness of specimens, in. [mm].

BCalculated elongation requirmeent shall be rounded to the nearest whode number.

Drilled Hole- The reference standard shall contain three or more holes, equally spaced circumferentially around the pipe
and longitudinally separated by a sufficient distance to allow distinct identificatin of the singnal from each hole.
The holes shall be drilled radially and completely throuh the pipe wall, with care being taken to avoid distortion of the pipe
while drilling. The hole diameter shall vary with NPS as follows :

NPS Designator	Hole Diameter
1/2	0.039 in. (1mm)
above 1/2 to 1 1/4	0.055 in.(1.4mm)
above 1 1/4 to 2	0.071 in. (1.8mm)
above 2 to 5	0.087 in.(2.2mm)
above 5	0.106 in.(2.7nn)

Test Method Information for Certification and Marking

Hydrostatic	Nondstructive	Marking
YES	NO	Test Pressure
NO	YES	NDE
NO	NO	NH
YES	YES	Test Pressure/NDE

Grade	Uns Designation
P11	K11597
P22	K21590
P5	K41545

Part Number;

Pipe shall be ordered to nominal pipe size and schedule specified in ANSI B36.10.

Example : A335 Pipe P-11 NPS 12 Sch 40 Specification Number.............................................ASTM A 335

Pipe......................................................................P
Grade....................................................................P-11
NPS......................................................................12
Wall.....................................................................0.375

16.1.4.2 Specification Number.......................ASTM A 335
Tube.....................................................................T
Grade....................................................................P-11
Outside Diameter...................................................0.250
Wall......................................................................0.035

16.1.5 Ordering Information - Orders for material under this specification shall include the following in addition

to the requirements of Section 3 : 16.1.5.1 Pipe or tube, 16.1.5.2 Part number, 16.1.5.3 Ultrasonic inspection,

if required, 16.1.5.4 If shear wave test is to be conducted in two oppositie circumferential directions, and 16.1.5.5 Level

of preservation and packing reuired.

APPENDIX (Nonmandatory Information) X1. SIZE RANGE AND WALL THICKNESSES OF GRADES P2 AND P12

X1.1 TableX1.1 constitutes the range of sizes and wall thicknesses of pipe ingrades P2 and P12 that are generally obtainable.

X1.2 For length ranges of pipe NPS 8 and under, see 9.1 The length ranges shown in the following table for pipe NPS 10 and

larger are representative of the present known capacities of the mills. See 9.1 for details.

TABLE X1.1 Size and Wall Thickness Ranges

NPS Designator Outside Diameter		Nominal Wall Thicknes
		Schedule 100		Schedule 120		Schedule 160
		Wall Thickness	Length Range	Wall Thickness	Length Range	Wall Thickness	Length Range
Inch-Pound
	in.	in.	ft	in.	ft	in.	ft
1/2	0.840	...	...	...	...	0.187	...
3/4	1.050	...	...	...	...	0.218	...
1	1.315	...	...	...	...	0.250	...
1 1/4	1.660	...	...	...	...	0.250	...
2	2.375	...	...	...	...	0.343	...
2 1/2	2.875	...	...	...	...	0.375	...
3	3.500	...	...	...	...	0.438	...
4	4.500	...	...	0.438	...	0.531	...
6	6.625	...	...	0.562	...	0.718	...
8	8.625	0.593	...	...	...	0.906	...
10	10.700	0.718	25 to 30	...	...	1.125	15 to 25
12	12.700	0.843	20 to 30	...	...	1.312	15 to 25
14	14.000	0.937	20 to 30	...	...	1.406	15 to 25
16	16.000	1.031	18 to 30	...	...	1.593	10 to 25
Sl Units
	in.	in.	ft	in.	ft	in.	ft
1/2	21.34	...	...	...	...	4.76	...
3/4	26.67	...	...	...	...	5.56	...
1	33.40	...	...	...	...	6.35	...
1 1/4	42.16	...	...	...	...	6.35	...
2	60.33	...	...	...	...	8.73	...
2 1/2	73.03	...	...	...	...	9.53	...
3	88.90	...	...	...	...	11.11	...
4	114.3	...	...	11.11	...	13.49	...
6	168.3	...	...	14.29	...	18.26	...
8	219.1	15.8	...	...	...	23.02	...
10	273.1	18.26	7.6 to 9.1	...	...	28.58	4.6 to 7.6
12	323.9	21.43	6.1 to 9.1	...	...	33.33	4.6 to 7.6
14	356.6	23.81	6.1 to 9.1	...	...	35.72	4.6 to 7.6
16	406.4	26.19	5.5 to 9.1	...	...	40.46	3.0 to 7.6

JIS Number and Corrensponding Foreign Standards

JIS			ASTM			BS			DIN
Standard Number	Grade	Type	Standard Number	Grade	Type	Standard Number	Grade	Type	Standard Number	Grade	Type
G3458	STPA12	Mo	A335	P1	Mo
	STPA20	CrMo	A335	P2	CrMo
	STPA22	CrMo	A355	P12	CrMo	3604	HFS620-460	CrMo	17175	13CrMo44	CrMo
						"	CFS620-460	CrMo
						"	ERW620-460	CrMo
						"	CEW620-460	CrMo
						"	HFS620-440	CrMo
						"	CFS620-440	CrMo
						"	ERW620-440	CrMo
						"	CEW620-440	CrMo
	STPA23	CrMo	A355	P11	CrMo	3604	HFS621	CrMo
						"	CFS621	CrMo
						"	ERW621	CrMo
						"	CEW621	CrMo
	STPA24	CrMo	A355	P22	CrMo	3604	HFS622	CrMo	17175	10CrMo910	CrMo
	STPA24					"	CFS622	CrMo
	STPA25	CrMo	A355	P5	CrMo	3604	HFS625	CrMo
	STPA25					"	CFS625	CrMo
	STPA26	CrMo	A355	P9	CrMo	3604	HFS629-470	CrMo
	STPA26					"	CFS629-470	CrMo

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