ASTM A714-99(2003)

Standard Specification for High-Strength Low-Alloy Welded and Seamless Steel Pipe

ABSTRACT
This specification covers standard requirements for seamless and welded high-strength low-alloy steel pipe NPS ½ to NPS 26, inclusive. The material shall be utilized in pressure piping service, and other general purposes, where savings in weight or added durability are important. Heat and product analysis shall be performed wherein different grades of steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, copper, vanadium, nickel, chromium, and molybdenum. The material shall conform to the required tensile properties such as tensile strength, yield strength, and elongation for the grade of Class 2 or Class 4 pipe specified. The steel shall undergo the following mechanical tests, namely: bend test, flattening test, and hydrostatic test.
SCOPE
1.1 This specification covers seamless and welded high-strength low-alloy steel pipe NPS 1/2 to NPS 26, inclusive. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification. This material is intended for pressure piping service, and other general purposes, where savings in weight or added durability are important.
Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as "nominal diameter," "size," and "nominal size."
Note 2—A comprehensive listing of standardized pipe dimensions is contained in ANSI Standard B36.10.
1.2 Class—These high-strength low-alloy steels have enhanced resistance to general atmospheric corrosion by weathering as commonly encountered in rural, urban, marine, and industrial environments. They are supplied in two classes: Class 2, having corrosion resistance equivalent to that of carbon steel with copper (0.20 minimum Cu); and Class 4, having corrosion resistance substantially better than that of Class 2 (Note 3). Class 4 steels when properly exposed to the atmosphere can be used bare (unpainted) for many applications.
Note 3—For methods of estimating the atmospheric corrosion resistance of low alloy steels see Guide G 101 or actual data.
1.3 Type—Pipe may be furnished in the following types of manufacturing processes:
Type F—Furnace-butt welded, continuous welded,
Type E—Electric-resistance welded, and
Type S—Seamless.
1.3.1 Pipe ordered under this specification is suitable for welding.
1.3.2 Type E pipe may be furnished either nonexpanded or cold-expanded at the option of the manufacturer.
1.3.3 Types F, E, and S pipe are commonly furnished in nonheat-treated condition. Type S pipe may be furnished in normalized (or other) heat-treated condition, when so specified.
1.3.4 Types F, E, and S pipe in single random lengths may be furnished with hot-dipped galvanized coating of zinc, subject to inquiry to the producer.
1.3.5 Couplings, when furnished, shall be of the same class, heat-treated condition, and grade of material as the pipe ordered.
1.4 Grade—This specification designates eight grades of steel composition as listed in and corresponding tensile requirements for the grades as listed in .
1.4.1 For Class 2 pipe, Grade I, II, or III shall be specified, and copper-bearing steel is required as specified in .
1.4.2 For Class 4 pipe, Grade IV, V, VI, VII, or VIII shall be specified. Alternatively, for Class 4, Type S, and Type E pipe, a steel composition corresponding to a grade listed in of Specification A 588/A 588M may be specified, subject to negotiation.
1.5 When Class 4 pipe is joined by welding or is used in welded construction, the user is cautioned that the selection of welding procedure and resultant composition of fused metal should be suitable for Class 4 material and the intended service.
1.6 The values stated in inch-pound units are to be regarded as the standard.

General Information

• Status: Historical
• Publication Date: 09-Mar-1999
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.09 - Carbon Steel Tubular Products

Relations

• Replaces: ASTM A714-99 - Standard Specification for High-Strength Low-Alloy Welded and Seamless Steel Pipe
• Effective Date: 10-Mar-1999
• Replaced By: ASTM A714-99(2009)e1 - Standard Specification for High-Strength Low-Alloy Welded and Seamless Steel Pipe (Withdrawn 2014)
• Effective Date: 01-Apr-2009

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 714 – 99 (Reapproved 2003)
Standard Specification for
High-Strength Low-Alloy Welded and Seamless Steel Pipe
This standard is issued under the fixed designation A 714; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 1.3.4 Types F, E, and S pipe in single random lengths may
be furnished with hot-dipped galvanized coating of zinc,
1.1 This specification covers seamless and welded high-
1 subject to inquiry to the producer.
strength low-alloy steel pipe NPS ⁄2 to NPS 26, inclusive. Pipe
1.3.5 Couplings, when furnished, shall be of the same class,
having other dimensions may be furnished provided such pipe
heat-treated condition, and grade of material as the pipe
complies with all other requirements of this specification. This
ordered.
material is intended for pressure piping service, and other
1.4 Grade—This specification designates eight grades of
general purposes, where savings in weight or added durability
steel composition as listed inTable 1 and corresponding tensile
are important.
requirements for the grades as listed in Table 2.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
1.4.1 For Class 2 pipe, Grade I, II, or III shall be specified,
been substituted in this standard for such traditional terms as “nominal
and copper-bearing steel is required as specified in Table 1.
diameter,” “size,” and “nominal size.”
1.4.2 For Class 4 pipe, Grade IV,V,VI,VII, orVIII shall be
NOTE 2—A comprehensive listing of standardized pipe dimensions is
specified. Alternatively, for Class 4, Type S, and Type E pipe,
contained in ANSI Standard B36.10.
a steel composition corresponding to a grade listed in Table 1
1.2 Class—These high-strength low-alloy steels have en-
of Specification A 588/A 588M may be specified, subject to
hanced resistance to general atmospheric corrosion by weath-
negotiation.
ering as commonly encountered in rural, urban, marine, and
1.5 When Class 4 pipe is joined by welding or is used in
industrial environments. They are supplied in two classes:
welded construction, the user is cautioned that the selection of
Class 2, having corrosion resistance equivalent to that of
welding procedure and resultant composition of fused metal
carbon steel with copper (0.20 minimum Cu); and Class 4,
should be suitable for Class 4 material and the intended
having corrosion resistance substantially better than that of
service.
Class 2 (Note 3). Class 4 steels when properly exposed to the
1.6 The values stated in inch-pound units are to be regarded
atmosphere can be used bare (unpainted) for many applica-
as the standard.
tions.
2. Referenced Documents
NOTE 3—For methods of estimating the atmospheric corrosion resis-
tance of low alloy steels see Guide G 101 or actual data.
2.1 ASTM Standards:
A 53/A 53M Specification for Pipe, Steel, Black and Hot-
1.3 Type—Pipe may be furnished in the following types of
Dipped, Zinc-Coated, Welded and Seamless
manufacturing processes:
A 90 TestMethodforWeight[Mass]ofCoatingonIronand
Type F—Furnace-butt welded, continuous welded,
Steel Articles with Zinc or Zinc-Alloy Coatings
Type E—Electric-resistance welded, and
A 370 Test Methods and Definitions for MechanicalTesting
Type S—Seamless.
of Steel Products
1.3.1 Pipe ordered under this specification is suitable for
A 588/A 588M Specification for High Strength Low-Alloy
welding.
Structural Steel with 50 ksi [345 MPa] Minimum Yield
1.3.2 Type E pipe may be furnished either nonexpanded or
Point to 4-in. [100-mm] Thick
cold-expanded at the option of the manufacturer.
A 700 Practices for Packaging, Marking, and Loading
1.3.3 Types F, E, and S pipe are commonly furnished in
Methods for Steel Products for Domestic Shipment
nonheat-treated condition. Type S pipe may be furnished in
A 751 Test Methods, Practices, and Terminology for
normalized(orother)heat-treatedcondition,whensospecified.
Chemical Analysis of Steel Products
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A01.09 on Carbon Steel Tubular Products. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Current edition approved Mar. 10, 1999. Published May 1999. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1975. Last previous edition approved in 1996 as A 714 – 96. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 714 – 99 (2003)
TABLE 1 Chemical Requirements
Composition, %
Element Grade I Grade II Grade III Grade IV
Heat Product Heat Product Heat Product Heat Product
Carbon, max 0.22 0.26 0.22 0.26 0.23 0.27 0.10 0.13
Manganese 1.25 max 1.30 max 0.85 to 1.25 1.30 max 1.35 max 1.40 max 0.60 max 0.65 max
A
Phosphorus . . 0.04 max 0.05 max 0.04 max 0.05 max 0.03 to 0.08
Sulfur, max 0.05 0.063 0.05 0.063 0.05 0.06 0.05 0.06
Silicon . . 0.30 max 0.33 max 0.30 max 0.35 max . .
Copper 0.20 min 0.18 min 0.20 min 0.18 min 0.20 min 0.18 min 0.25 to 0.45 0.22 to 0.48
B
Vanadium . . 0.02 min 0.01 min 0.02 min 0.01 min . .
Nickel . . . . . . 0.20 to 0.50 0.17 to 0.53
Chromium . . . . . . 0.80 to 1.20 0.74 to 1.26
Molybdenum . . . . . . . .
Composition, %
Element Grade V Grade VI Grade VII Grade VIII
Heat Product Heat Product Heat Product Heat Product
Carbon, max 0.16 0.20 0.15 0.18 0.12 0.15 0.19 0.23
Manganese 0.40 to 0.35 to 0.50 to 1.00 0.45 to 0.20 to 0.17 to 0.80 to 1.25 0.74 to 1.31
1.01 1.06 1.05 0.50 0.53
A
Phosphorus 0.035 max 0.045 max 0.035 max 0.045 max 0.07 to 0.04 max 0.05 max
0.15
Sulfur, max 0.040 0.050 0.045 0.055 0.05 0.06 0.05 0.06
Silicon . . . . 0.25 to 0.20 to 0.30 to 0.65 0.25 to 0.70
0.75 0.80
Copper 0.80 min 0.75 to 0.30 to 1.00 0.27 to 0.25 to 0.22 to 0.25 to 0.40 0.22 to 0.43
1.25 1.03 0.55 0.58
Vanadium . . . . . . 0.02 to 0.10 0.01 to 0.11
Nickel 1.65 min 1.60 to 0.40 to 1.10 0.35 to 0.65 max 0.68 max 0.40 max 0.43 max
2.24 1.15
Chromium . . 0.30 max 0.33 max 0.30 to 0.24 to 0.40 to 0.65 0.36 to 0.69
1.25 1.31
Molybdenum . . 0.10 to 0.20 0.09 to . . . .
0.21
A
Because of the degree to which phosphorus segregates, product analysis for this element is not technologically appropriate for rephosphorized steels unless
misapplication is clearly indicated.
B
For Grade III, columbium may be used in conformance with the following limits: 0.005 % min (heat) and 0.004 % min (product).
TABLE 2 Tensile Requirements
Class 2 Pipe Class 4 Pipe
A
Grade I Grade II Grade III Grade IV Grade V, Grade V, Grade VI, Grade VII, Grade VIII,
Type F Type E and S Type E and S Type E and S Type E and S
Tensile strength, 70 000 (485) 70 000 (485) 65 000 (450) 58 000 (400) 55 000 (380) 65 000 (450) 65 000 (450) 65 000 (450) 70 000 (485)
min, psi (MPa)
Yield strength, min, 50 000 (345) 50 000 (345) 50 000 (345) 36 000 (250) 40 000 (275) 46 000 (315) 46 000 (315) 45 000 (310) 50 000 (345)
psi (MPa)
B,CB,CB,CB,C
Elongation in 2 in. 22 22 20 22 21
(50.8 mm)
min, %
Elongation in 8 in. 19 18 18 . . . . . .
(203.2 mm)
min, %
A 1
Not available in wall thicknesses over ⁄2 in.
B
The minimum elongation in 2 in. (50.8 mm) shall be determined by the following equation:
0.2 0.9)
e = 625 000(A /U
where:
e = minimum elongation in 2 in. (50.8 mm), rounded to nearest 0.5 %,
A = cross-sectional area of the tension test specimen in square inches, based on specified outside diameter or nominal specimen width and specified wall thickness
2 2 2
rounded to the nearest 0.01 in. If the area thus calculated is greater than 0.75 in. , then the value of 0.75 in. shall be used, and
U = specified tensile strength, psi.
C
See Table X1.1 for minimum elongation values for various size tension specimens and grades.
B 6 Specification for Zinc
G 101 Guide for Estimating the Atmospheric Corrosion
Resistance of Low-Alloy Steels
2.2 ANSI Standard:
A 714 – 99 (2003)
B36.10 Welded and Seamless Wrought Steel Pipe For Class 4 material, the atmospheric corrosion–resistance
index, calculated on the basis of the chemical composition of
3. Terminology
the steel as described in Guide G 101, shall be 6.0 or higher.
3.1 Definitions of Terms Specific to This Standard:
NOTE 4—The user is cautioned that the Guide G 101 predictive
3.1.1 defect, n—any imperfection of sufficient size or mag-
equation for calculation of an atmospheric corrosion–resistance index has
nitude to be cause for rejection.
been verified only for the composition limits stated in that guide. It is not
3.1.2 imperfection, n—any discontinuity or irregularity
applicable, for example, for Specification A 714 Grade V because the
copper and nickel contents of this grade are greater than the limits
found in the pipe.
specified in Guide G 101.
4. Ordering Information
6.3 HeatAnalysis—Ananalysisofeachheatofopen-hearth,
4.1 Orders for material under this specification should basic-oxygen or electric-furnace steel shall be made from a test
include the following, as required, to describe the desired
ingot taken during the pouring of the heat. The chemical
material adequately: compositionthusdeterminedshallconformtotherequirements
4.1.1 Quantity (feet, or metres, or number of lengths),
specified in Table 1 for heat analysis.
4.1.2 Name of material (steel pipe), 6.4 Product Analysis:
4.1.3 Class of pipe (Class 2 or Class 4, see 1.2), 6.4.1 An analysis may be made by the purchaser from
4.1.4 MethodofmanufactureorTypeofpipe(TypesF,E,or finished pipe manufactured in accordance with this specifica-
S, see 1.3), tion, or an analysis may be made from flat-rolled stock from
4.1.5 Grade (see 1.4), which the welded pipe is manufactured. When product analy-
4.1.6 Heat treatment, when required (see 1.3.3), ses are made, two sample lengths from each lot of 500 lengths
4.1.7 Surface finish (bare, oiled, coated, or galvanized), or fraction thereof shall be selected.The chemical composition
4.1.8 Size(eitherNPSandweightclassorschedulenumber, thus determined shall conform to the requirements specified in
or both; or outside diameter and nominal wall thickness),
Table 1 for product analysis.
4.1.9 Length (specific or random, see Section 14), 6.4.2 In the event that the chemical composition of one of
4.1.10 End finish (plain or threaded, see Section 15),
the sample lengths does not conform to the requirements
4.1.11 Skelp for tension tests, if permitted (see 11.2), shown in Table 1 for product analysis, an analysis shall be
4.1.12 Couplings, if threaded; no couplings, if not desired;
made on two additional lengths selected from the same lot,
couplings power-tight, if so desired, each of which shall conform to the requirements specified in
4.1.13 Specification number,
Table 1 for product analysis, or the lot is subject to rejection.
4.1.14 End use of material, and
7. Tensile Requirements
4.1.15 Special requirements.
7.1 The material shall conform to the requirements as to
5. Materials and Manufacture
tensile properties prescribed in Table 2 for the grade of Class 2
or Class 4 pipe specified.
5.1 The steel shall be made by one or more of the following
7.2 The yield strength corresponding to a permanent offset
processes: open-hearth, basic-oxygen, or electric-furnace.
of 0.2 % of the gage length of the specimen or to a total
5.2 Steel may be cast in ingots or may be strand cast. When
extension of 0.5 % of the gage length under load shall be
steels of different grades are sequentially strand cast, identifi-
determined.
cation of the resultant transition material is required. The
7.3 The test specimen taken across the weld of welded pipe
producer shall remove the transition material by any estab-
shall show a tensile strength not less than the minimum tensile
lished procedure that positively separates the grades.
strength specified for the grade of pipe ordered. This test will
5.3 The pipe shall be made by the seamless, furnace-
not be required for pipe under NPS 8.
buttwelded (continuous-welded), or electric resistance-welded
7.4 Transverse tension test specimens for electric-welded
process.
pipe NPS 8 and larger shall be taken opposite the weld. All
6. Chemical Composition
transverse test specimens shall be approximately 1 ⁄2 in. (38.1
mm) wide in the gage length, and shall represent the full wall
6.1 Whensubjectedtotheheatandproductanalysis,respec-
thickness of the pipe from which the specimen was cut.
tively, the steel shall conform to the requirements prescribed in
Table 1. Chemical analysis shall be in accordance with Test
8. Bending Requirements
Methods, Practices, and Terminology A 751.
8.1 For pipe NPS 2 and under, a sufficient length of pipe
6.2 For Grade I, the choice and use of alloying elements,
shall withstand being bent cold through 90° around a cylindri-
combined with carbon, manganese, sulfur, and copper within
cal mandrel, the diameter of which is twelve times the nominal
the limits prescribed in Table 1 to give the mechanical
diameter of the pipe, without developing cracks at any portion
properties prescribed in Table 2, shall be made by the manu-
and without opening the weld. Double-extra-strong pipe need
facturer and included and reported in the heat analysis for
not be subjected to the bend test.
information purposes only to identify the type of steel applied.
9. Flattening Test
9.1 The flattening test shall be made on pipe over NPS 2
Available from American National Standards Institute, 11 West 42nd St., 13th
Floor, New York, NY 10036. with wall thicknesses extra strong and lighter.
A 714 – 99 (2003)
9.2 Seamless Pipe: ductility exclusive of the weld, no cracks or breaks on the
9.2.1 Forseamlesspipeasectionnotlessthan2 ⁄2 in.(63.5 inside, outside, or end surfaces, except as provided for in 9.7,
shall occur until the distance between the plates is less than
mm) in length shall be flattened cold between parallel plates in
two steps. During the first step, which is a test for ductility, no 60 % of the original outside diameter for butt-welded pipe.
During the third step, which is a test for soundness, the
cracksorbreaksontheinsideoroutsideorendsurfaces,except
as provided for in 9.7, shall occur until the distance between flattening shall be continued until the specimen breaks or the
opposite walls of the pipe meet. Evidence of laminated or
the plates is les
...