ASTM A968/A968M-96(2014)
(Specification)Standard Specification for Chromium, Chromium-Nickel, and Silicon Alloy Steel Bars and Shapes for Corrosion and Heat-Resisting Service (Withdrawn 2020)
Standard Specification for Chromium, Chromium-Nickel, and Silicon Alloy Steel Bars and Shapes for Corrosion and Heat-Resisting Service (Withdrawn 2020)
ABSTRACT
This specification covers hot- and cold-finished alloy steel bars including rounds, squares, hexagons, and hot-rolled or extruded shapes for use in corrosion and heat-resisting service. The steel specimens shall be furnished in the solution annealed condition with subsequent light drawing and straightening permitted. The steel materials shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, and molybdenum. Mechanical tests shall be performed wherein the materials shall conform to the required values of tensile strength, yield strength, elongation, and hardness.
SCOPE
1.1 This specification covers hot- and cold-finished alloy steel bars having a chromium content equal to or less than 11.0 % including rounds, squares, hexagons, and hot-rolled or extruded shapes for use in corrosion and heat-resisting service.
1.2 Some steels covered by this specification, especially the high silicon-containing steels, because of their particular alloy content and specialized properties, may require special care in their fabrication and welding. Specific procedures are of fundamental importance, and it is presupposed that all parameters will be in accordance with approved test methods capable of producing the desired properties in the finished fabrication.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 This specification and the applicable material specifications are expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished in inch-pound units.
WITHDRAWN RATIONALE
This specification covers hot- and cold-finished alloy steel bars having a chromium content equal to or less than 11.0 % including rounds, squares, hexagons, and hot-rolled or extruded shapes for use in corrosion and heat-resisting service.
Formerly under the jurisdiction of Committee A01 on Steel, Stainless Steel and Related Alloys, this specification was withdrawn in March 2020. This standard is being withdrawn without replacement because it has been deemed obsolete.
General Information
Relations
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:A968/A968M −96 (Reapproved 2014)
Standard Specification for
Chromium, Chromium-Nickel, and Silicon Alloy Steel Bars
and Shapes for Corrosion and Heat-Resisting Service
This standard is issued under the fixed designationA968/A968M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 SAE Standard:
SAE J 1086 Recommended Practice for Numbering Metals
1.1 This specification covers hot- and cold-finished alloy
and Alloys
steel bars having a chromium content equal to or less than
11.0 % including rounds, squares, hexagons, and hot-rolled or
3. Ordering Information
extruded shapes for use in corrosion and heat-resisting service.
3.1 It is the responsibility of the purchaser to specify all
1.2 Some steels covered by this specification, especially the
requirements that are necessary for material ordered under this
high silicon-containing steels, because of their particular alloy
specification. Such requirements may include, but are not
content and specialized properties, may require special care in
limited to, the following:
their fabrication and welding. Specific procedures are of
3.1.1 Quantity (weight or number of pieces);
fundamental importance, and it is presupposed that all param-
3.1.2 Dimensions, including diameter or thickness (and
eters will be in accordance with approved test methods capable
width),shapeorform,applicableprintsorsketches,length,and
of producing the desired properties in the finished fabrication.
so forth;
1.3 The values stated in either SI units or inch-pound units 3.1.3 Type or UNS designation (see Table 1);
are to be regarded separately as standard. The values stated in 3.1.4 ASTM designation and edition year if other than latest
each system may not be exact equivalents; therefore, each edition;
system shall be used independently of the other. Combining 3.1.5 Heat-treated condition (see Section 5);
values from the two systems may result in non-conformance 3.1.6 Finish (see Manufacture section of Specification
with the standard. A484/A484M);
3.1.7 Supplementary requirements invoked for special ser-
1.4 This specification and the applicable material specifica-
vices;
tions are expressed in both inch-pound and SI units. However,
3.1.8 Whether bars are to be rolled as bars or cut from strip
unless the order specifies the applicable “M” specification
or plate;
designation (SI units), the material shall be furnished in
3.1.9 Preparation for delivery (see Preparation for Delivery
inch-pound units.
section of Specification A484/A484M);
3.1.10 Marking requirements (see Marking section of
2. Referenced Documents
2 Specification A484/A484M);
2.1 ASTM Standards:
3.1.11 Surface preparation of shapes (see Manufacture sec-
A484/A484M Specification for General Requirements for
tion of Specification A484/A484M); and
Stainless Steel Bars, Billets, and Forgings
3.1.12 The intended use of the material, if the purchaser
A751 Test Methods, Practices, and Terminology for Chemi-
considers this useful information.
cal Analysis of Steel Products
E527 Practice for Numbering Metals and Alloys in the NOTE 1—A typical ordering description is as follows: 5000 lb [2000
kg]; 1.000-in. [25-mm] round bar by 10 to 12 ft [3 to 4 m]; UNS S70003;
Unified Numbering System (UNS)
to Specification A XXX [A XXX]; annealed; centerless ground; plus any
optional supplementary requirements; such as, for example, special
marking instructions.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.17 on Flat-Rolled and Wrought Stainless Steel. 4. General Requirements
Current edition approved March 1, 2014. Published April 2014. Originally
4.1 In addition to the requirements of this specification, all
approved in 1996. Last previous edition approved in 2009 as A968/A968M- 96
(2009). DOI: 10.1520/A0968_A0968M-96R14. requirements of the current editions of Specification A484/
For referenced ASTM standards, v
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.