ASTM A203/A203M-97

Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel

SCOPE
1.1 This specification  covers nickel-alloy steel plates intended primarily for welded pressure vessels.  
1.2 Plates under this specification are available with four strength levels and two nickel compositions as follows:  Nominal Yield Tensile Nickel Strength, Strength, Content min, ksi min, ksi Grade % [MPa] [MPa] A 2.25 37 [255] 65 [450] B 2.25 40 [275] 70 [485] D 3.50 37 [255] 65 [450] E 3.50 40 [275] 70 [485] F 3.50 2 in.[50 mm] and under 55 [380] 80 [550] Over 2 in.[50 mm] 50 [345] 75 [515]
1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements. However, current practice normally limits the maximum thickness of plates furnished under this specification as follows:  Maximum Thickness, Grade in. [mm] A 6 [150] B 6 [150] D 4 [100] E 4 [100] F 4 [100]
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 this specification.

General Information

• Status: Historical
• Publication Date: 09-Mar-1997
• ICS: 77.140.30 - Steels for pressure purposes
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.11 - Steel Plates for Boilers and Pressure Vessels

Relations

• Replaced By: ASTM A203/A203M-97(2003) - Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel
• Effective Date: 10-Sep-2003
• Referred By: ASTM A671/A671M-20 - Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
• Effective Date: 10-Mar-1997
• Referred By: ASTM A20/A20M-20 - Standard Specification for General Requirements for Steel Plates for Pressure Vessels
• Effective Date: 10-Mar-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation: A 203/A 203M – 97
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Nickel
This standard is issued under the fixed designationA203/A203M; 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 Steel Plates for Pressure Vessels
A 435/A 435M Specification for Straight-Beam Ultrasonic
1.1 This specification covers nickel-alloy steel plates in-
Examination of Steel Plates
tended primarily for welded pressure vessels.
A 577/A 577M Specification for Ultrasonic Angle-Beam
1.2 Plates under this specification are available with four
Examination of Steel Plates
strength levels and two nickel compositions as follows:
A 578/A 578M Specification for Straight-Beam Ultrasonic
Nominal Yield Tensile
Examination of Plain and Clad Steel Plates for Special
Nickel Strength, Strength,
Content min, ksi min, ksi
Applications
Grade % [MPa] [MPa]
3. General Requirements and Ordering Information
A 2.25 37 [255] 65 [450]
B 2.25 40 [275] 70 [485]
3.1 Material supplied to this material specification shall
D 3.50 37 [255] 65 [450]
conform to Specification A 20A 20/A 20M/A 20M. These re-
E 3.50 40 [275] 70 [485]
quirements outline the testing and retesting methods and
F 3.50
2 in. [50 mm] and under 55 [380] 80 [550]
procedures, permissible variations in dimensions and mass,
Over 2 in. [50 mm] 50 [345] 75 [515]
quality and repair of imperfections, marking, loading, etc.
1.3 The maximum thickness of plates is limited only by the
3.2 Specification A 20A 20/A 20M/A 20M also establishes
capacity of the composition to meet the specified mechanical the rules for the basis of purchase that should be complied with
property requirements. However, current practice normally
when purchasing material to this specification.
limits the maximum thickness of plates furnished under this 3.3 In addition to the basic requirements of this specifica-
specification as follows:
tion, certain supplementary requirements are available when
additional control, testing, or examination is required to meet
Maximum Thickness,
Grade in. [mm]
end use requirements. These include:
3.3.1 Vacuum treatment,
A 6 [150]
3.3.2 Additional or special tension testing,
B 6 [150]
D 4 [100]
3.3.3 Impact testing, and
E 4 [100]
3.3.4 Nondestructive examination.
F 4 [100]
3.4 The purchaser is referred to the listed supplementary
1.4 The values stated in either inch-pound units or SI units
requirements in this specification and to the detailed require-
are to be regarded separately as standard. Within the text, the
ments in Specification A 20A 20/A 20M/A 20M.
SI units are shown in brackets. The values stated in each
3.5 If the requirements of this specification are in conflict
system are not exact equivalents. Therefore, each system must
with the requirements of Specification A 20A 20/A 20M/
be used independently of the other. Combining values from the
A 20M, the requirements of this specification shall prevail.
two systems may result in nonconformance with this specifi-
cation.
4. Materials and Manufacture
4.1 Steelmaking Practice—The steel shall be killed and
2. Referenced Documents
shall conform to the fine grain size requirement of Specifica-
2.1 ASTM Standards:
tion A 20/A 20M.
A 20/A 20M Specification for General Requirements for
5. Heat Treatment
5.1 All plates shall be thermally treated as follows:
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
5.1.1 All plates of Grades A, B, D, and E shall be normal-
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
ized except as permitted by 5.1.1.1.
Current edition approved March 10, 1997. Published November 1997. Originally
published as A 203–37 T. Last previous edition A 203/A 203M–93.
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
cation SA-203/SA-203M in Section II of that Code. Annual Book of ASTM Standards, Vol 01.04.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
A 203/A 203M – 97
5.1.1.1 IfapprovedbythepurchaserforGradesA,B,D,and 7.1.1 For plates that have been heat treated in accordance
E, cooling rates faster than air cooling are permissible for with5.1.1.1or5.1.2andhaveanominalthicknessof ⁄4 in.[20
improvement of the toughness, provided the plates are subse-
mm] and under, the 1 ⁄2-in. (40-mm) wide rectangular speci-
quently tempered at not less than 1100°F [595°C] for not less
men may be used for the tension test, and the elongation may
than ⁄2 h.
be determined in a 2-in. [50-mm] gage length that includes the
5.1.2 All plates of Grade F shall be heat treated
...