ASTM A476M-84(1993)

Standard Specification for Ductile Iron Castings for Paper Mill Dryer Rolls [Metric] (Withdrawn 2000)

SCOPE
1.1 This specification  covers castings made of ductile iron, also known as spheroidal graphite iron or nodular iron, which is defined as cast iron with the graphite substantially in spherical shape and substantially free from flake graphite. The castings are to be used for pressure containing parts in the form of paper mill dryer rolls at temperatures up to 230°C.  
1.2 No precise quantitative relationship can be stated between the properties of the iron in various locations of the same casting or between the properties of a casting and those of a test specimen cast from the same iron (see Appendix X1).  
1.3 This specification covers only SI units and is not to be used or confused with inch-pound units.  Note 1-This metric specification is the equivalent of A476, and is compatible in technical content.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1992
• ICS: 77.140.80 - Iron and steel castings
• Technical Committee: A04 - Iron Castings
• Drafting Committee: A04.02 - Malleable and Ductile Iron Castings

Standards Content (Sample)

Designation: A 476M – 84 (Reapproved 1993)
METRIC
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
1
Ductile Iron Castings for Paper Mill Dryer Rolls [Metric]
This standard is issued under the fixed designation A 476M; 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 5. Materials and Manufacture
2
1.1 This specification covers castings made of ductile iron, 5.1 The iron shall be melted, treated, and cast by any
also known as spheroidal graphite iron or nodular iron, which suitable process to produce ductile iron as defined in the scope.
is defined as cast iron with the graphite substantially in 5.2 The castings may be stress relieved at a temperature not
spherical shape and substantially free from flake graphite. The to exceed 650°C.
castings are to be used for pressure containing parts in the form
6. Chemical Requirements
of paper mill dryer rolls at temperatures up to 230°C.
1.2 No precise quantitative relationship can be stated be-
6.1 The castings shall conform to the following chemical
tween the properties of the iron in various locations of the same
requirements:
casting or between the properties of a casting and those of a test
Total carbon, min, % 3.0
Silicon, max, % 3.0
specimen cast from the same iron (see Appendix X1).
Phosphorus, max, % 0.08
1.3 This specification covers only SI units and is not to be
Sulfur, max, % 0.05
used or confused with inch-pound units.
6.2 The castings shall have a carbon equivalent of 3.8 to 4.5
NOTE 1—This metric specification is the equivalent of A 476, and is
inclusive.
compatible in technical content.
NOTE 2—The carbon content equivalent is calculated as follows:
2. Referenced Documents
Total carbon + 0.3 (silicon + phosphorus)
2.1 ASTM Standards:
6.3 The chemical analysis for total carbon shall be made on
3
A 644 Terminology Relating to Iron Castings
either chilled cast pencil-type specimens or on thin wafers
4
E 8 Test Methods for Tension Testing of Metallic Materials
approximately 0.8 mm thick, cut from test coupons. Drillings
E 10 Test Method for Brinell Hardness of Metallic Materi-
shall not be used because of attendant loss of graphite.
4
als
7. Mechanical Properties
E 446 Reference Radiographs for Steel Castings Up to 2 in.
5
(51 mm) in Thickness
7.1 The cast iron as represented by the test coupons shall
conform to tensile requirements prescribed in Table 1.
3. Terminology
7.2 The yield strength prescribed in Table 1 may be deter-
3.1 Definitions for many terms common to iron castings are mined by any of the approved procedures described in 5.3 and
found in Terminology A 644. 5.4 of Test Methods E 8. For accurate or referee work, yield
strength shall be determined as the stress which produces an
4. Ordering Information
offset of 0.2 %.
7.3 The Brinell hardness of the material shall be a minimum
4.1 The purchase order for castings under this specification
of 201 HB. Hardness tests shall be conducted in accordance
shall state the specification designation and the year in which
with Test Method E 10, using a 3000-kgf load. The test may be
the specification was issued. Any options or special additions
made on either the casting or on a test coupon representing the
to the basic requirements of this specification shall be clearly
materials in the casting.
and fully stipulated.
8. Workmanship, Finish, and Appearance
1
This specification is under the jurisdiction of ASTM Committee A-4 on Iron
8.1 The castings shall conform substantially to the dimen-
Castings and is the direct responsibility of Subcommittee A04.02 on Malleable and
sions on the drawings furnished by the purchaser, or if no
Ductile Iron Castings.
drawing has been provided, to the dimensions predicated by
Current edition approved June 15, 1984. Published August 1984.
2
For ASME Boiler and Pressure Vessel Code Applications see related Specifi-
the pattern supplied by the purchaser. Surfaces of the castings
cations SA-467 in Section II of that Code.
shall be free of adhering sand and shall be reasonably smooth.
3
Annual Book of ASTM Standards, Vol 01.02.
4 Runners, risers, fins, and other extraneous metal shall be
Annual Book of ASTM Standards, Vol 03.01.
5
Annual Book of ASTM Standards, Vol 03.03. removed.
1

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A 476M
TABLE 1 Tensile Requirements
Test Coupon Section Thickness 25 mm 75 mm
Tensile strength, min, MPa 555 555
Yield strength, min, MPa 415 415
Elongation in 50 mm, min, % 3.0 1.0
9. Sampling
9.1 The test coupon shall be cast from the same iron from
which the casting is poured.
9.2 The test coupons representing the material in the casting
from which tension test spe
...