ASTM A738/A738M-00

Standard Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel, for Moderate and Lower Temperature Service

SCOPE
1.1 This specification  covers heat-treated carbon-manganese-silicon steel plates intended for use in welded pressure vessels at moderate and lower temperature service.  
1.2 Material under this specification is available in three strength levels, 75 ksi [515 MPa], 85 ksi [585 MPa], and 80 ksi [550 MPa], minimum ultimate tensile strengths.  
1.3 The maximum thickness of Grade A plates is limited only by the capacity of the chemical composition and heat treatment to meet the specified mechanical property requirements. The maximum thickness of Grade B plates is limited to 2.5 in. [65 mm]. The maximum thickness of Grade C is limited to 6 in.  
1.4 Grade A is the material that, prior to 1984, was covered by Specification A738 without a grade designation.  
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standards. 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 the specification.

General Information

• Status: Historical
• Publication Date: 09-Mar-2000
• ICS: 77.140.30 - Steels for pressure purposes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.11 - Steel Plates for Boilers and Pressure Vessels

Relations

• Replaced By: ASTM A738/A738M-03a - Standard Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel, for Moderate and Lower Temperature Service
• Effective Date: 06-Nov-2003
• Referred By: ASTM A20/A20M-20 - Standard Specification for General Requirements for Steel Plates for Pressure Vessels
• Effective Date: 10-Mar-2000

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 738/A738M – 00
Standard Specification for
Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-
Silicon Steel, for Moderate and Lower Temperature Service
This standard is issued under the fixed designation A 738/A738M; 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.
TABLE 1 Chemical Requirements
1. Scope
1.1 This specification covers heat-treated carbon-
Composition, %
Element
manganese-silicon steel plates intended for use in welded
Grade A Grade B Grade C
pressure vessels at moderate and lower temperature service.
A
Carbon, max 0.24 0.20 0.20
1.2 Material under this specification is available in three
Manganese:
strength levels, 75 ksi [515 MPa], 85 ksi [585 MPa], and 80 ksi
Heat analysis
2.5 in. [65 mm] and 1.50 max 0.90–1.50 1.50 max
[550 MPa], minimum ultimate tensile strengths.
under
1.3 The maximum thickness of plates is limited only by the
Over 2.5 in. [65 mm] 1.60 max 0.90–1.60 1.60 max
capacity of the chemical composition and heat treatment to
Product analysis
2.5 in. [65 mm] and 1.62 max 0.84–1.62 1.62 max
meet the specified mechanical property requirements; however,
under
current practice normally limits the maximum thickness of
Over 2.5 in. [65 mm] 1.72 max 0.84–1.72 1.72 max
A
plates furnished under this specification to 6 in. [ 150 mm] for Phosphorus, max 0.035 0.030 0.025
A
Sulfur, max 0.035 0.030 0.025
Grade A, 4 in. [100 mm] for Grade B, and 6 in. [150 mm] for
Silicon:
Grade C.
Heat analysis 0.15–0.50 0.15–0.55 0.15–0.50
1.4 Grade A is the material that, prior to 1984, was covered Product analysis 0.13–0.55 0.13–0.60 0.13–0.55
Copper, max:
by Specification A 738 without a grade designation.
Heat analysis 0.35 0.35 0.35
1.5 The values stated in either inch-pound units or SI units
Product analysis 0.38 0.38 0.38
Nickel, max:
are to be regarded separately as standards. Within the text, the
Heat analysis 0.50 0.60 0.50
SI units are shown in brackets. The values stated in each
Product analysis 0.53 0.63 0.53
system are not exact equivalents; therefore, each system must
Chromium, max:
be used independently of the other. Combining values from the Heat analysis 0.25 0.30 0.25
Product analysis 0.29 0.34 0.29
two systems may result in nonconformance with the specifi-
Molybdenum, max:
cation.
Heat analysis
1.5 in. [40 mm] and 0.08 0.20 0.08
under
2. Referenced Documents
Over 1.5 in. [40 mm] 0.08 0.30 0.08
2.1 ASTM Standards:
Product analysis
A 20/A20M Specification for General Requirements for 1.5 in. [40 mm] and 0.09 0.21 0.09
3 under
Steel Plates for Pressure Vessels
Over 1.5 in. [40 mm] 0.09 0.33 0.09
Vanadium, max:
3. General Requirements and Ordering Information B
Heat analysis 0.07 0.07 0.05
B
Product analysis 0.08 0.08 0.05
3.1 Material supplied to this specification shall conform to
Columbium, max:
the requirements of Specification A 20/A 20M. These require- B C
Heat analysis 0.04 0.04
B C
Product analysis 0.05 0.05
ments outline the testing and retesting methods and procedures,
Columbium plus Vanadium,
permissible variations in dimensions and mass, quality, repair
max:
B C
of defects, marking, loading, etc.
Heat analysis 0.08 0.08
B C
Product analysis 0.10 0.10
A
Applies to both heat and product analyses.
B
Vanadium and columbium may be added only by agreement between the
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
producer and the purchaser.
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
C
For Grade C, columbium is an unspecified element.
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved March 10, 2000. Published May 2000. Originally
e1
published as A 738 – 76. Last previous edition A 738/A 738M – 90 (1996) .
3.2 Specification A 20/A 20M also establishes the rules for
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
compliance to the ordering information when purchasing
cation SA-738/SA-738M in Section II of that Code.
Annual Book of ASTM Standards, Vol 01.04. material to this specification.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
A 738/A738M – 00
TABLE 2 Tensile Requirements
3.3 Certain supplementary requirements considered suitable
for use with this specification are listed at
...