ASTM A536-84(1999)e1

Standard Specification for Ductile Iron Castings

SCOPE
1.1 This specification covers castings made of ductile iron, also known as spheroidal or nodular iron, that is described as cast iron with the graphite substantially spheroidal in shape and essentially free of other forms of graphite, as defined in Definitions A644.  
1.2 The values stated in inch-pound units are to be regarded as the standard.  
1.3 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 castings and those of a test specimen cast from the same iron (see Appendix X1).

General Information

• Status: Historical
• Publication Date: 09-Oct-1999
• ICS: 77.140.80 - Iron and steel castings
• Technical Committee: A04 - Iron Castings
• Drafting Committee: A04.02 - Malleable and Ductile Iron Castings

Relations

• Replaced By: ASTM A536-84(2004) - Standard Specification for Ductile Iron Castings
• Effective Date: 01-Oct-2004
• Referred By: ASTM F1155-10(2019) - Standard Practice for Selection and Application of Piping System Materials
• Effective Date: 10-Oct-1999
• Referred By: ASTM F2798-09(2023) - Standard Specification for Sealless Lube Oil Pump with Oil Through Motor for Marine Applications
• Effective Date: 10-Oct-1999
• Referred By: ASTM D4383-21 - Standard Specification for Plowable, Raised Retroreflective Pavement Markers
• Effective Date: 10-Oct-1999
• Referred By: ASTM F1545-15a(2021) - Standard Specification for Plastic-Lined Ferrous Metal Pipe, Fittings, and Flanges
• Effective Date: 10-Oct-1999
• Referred By: ASTM F1548-01(2023) - Standard Specification for Performance of Fittings for Use with Gasketed Mechanical Couplings Used in Piping Applications
• Effective Date: 10-Oct-1999
• Referred By: ASTM F432-19 - Standard Specification for Roof and Rock Bolts and Accessories
• Effective Date: 10-Oct-1999
• Referred By: ASTM A395/A395M-99(2022) - Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures
• Effective Date: 10-Oct-1999
• Referred By: ASTM A1095-15(2019) - Standard Specification for High-Silicon Molybdenum Ferritic Iron Castings
• Effective Date: 10-Oct-1999
• Referred By: ASTM F1476-07(2019) - Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications
• Effective Date: 10-Oct-1999
• Referred By: ASTM F1510-21 - Standard Specification for Rotary Positive Displacement Pumps, Ships Use
• Effective Date: 10-Oct-1999
• Referred By: ASTM A834-95(2020) - Standard Specification for Common Requirements for Iron Castings for General Industrial Use
• Effective Date: 10-Oct-1999

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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e1
Designation: A 536 – 84 (Reapproved 1999)
Standard Specification for
Ductile Iron Castings
This standard is issued under the fixed designation A 536; 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.
This standard has been approved for use by agencies of the Department of Defense.
e NOTE—Keywords were added editorially in October 1999.
1. Scope 3.1.2 Grade of ductile iron required (see Table 1, and
Sections 4 and 9),
1.1 This specification covers castings made of ductile iron,
3.1.3 Special properties, if required (see Section 7),
also known as spheroidal or nodular iron, that is described as
3.1.4 If a different number of samples are required (see
cast iron with the graphite substantially spheroidal in shape and
Section 10),
essentially free of other forms of graphite, as defined in
3.1.5 Certification, if required (see Section 14), and
Definitions A 644.
3.1.6 Special preparation for delivery, if required (see Sec-
1.2 The values stated in inch-pound units are to be regarded
tion 15).
as the standard.
1.3 No precise quantitative relationship can be stated be-
4. Tensile Requirements
tween the properties of the iron in various locations of the same
4.1 The iron represented by the test specimens shall con-
casting or between the properties of castings and those of a test
form to the requirements as to tensile properties presented in
specimen cast from the same iron (see Appendix X1).
Table 1 and Table 2. The irons listed in Table 1 cover those in
2. Referenced Documents general use while those listed in Table 2 are used for special
applications (such as pipes, fittings, etc.).
2.1 ASTM Standards:
4.2 The yield strength shall be determined at 0.2 % offset by
A 370 Test Methods and Definitions for Mechanical Testing
the offset method (see Test Methods E 8). Other methods may
of Steel Products
be used by mutual consent of the manufacturer and purchaser.
A 644 Terminology Relating to Iron Castings
A 732/A 732M Specification for Castings, Investment,
5. Heat Treatment
Carbon and Low–Alloy Steel for General Application, and
3 5.1 The 60-40-18 grade will normally require a full ferritiz-
Cobalt Alloy for High Strength at Elevated Temperatures
4 ing anneal. The 120-90-02 and the 100-70-03 grades generally
E 8 Test Methods for Tension Testing of Metallic Materials
require a quench and temper or a normalize and temper, or an
2.2 Military Standard:
5 isothermal heat treatment. The other two grades can be met
MIL-STD-129 Marking for Shipment and Storage
either as-cast or by heat treatment. Ductile iron, that is heat
3. Ordering Information treated by quenching to martensite and tempering, may have
substantially lower fatigue strength than as cast material of the
3.1 Orders for material to this specification shall include the
same hardness.
following information:
3.1.1 ASTM designation,
6. Test Coupons
6.1 The separately cast test coupons from which the tension
test specimens are machined shall be cast to the size and shape
This specification is under the jurisdiction of the ASTM Committee A-4 on
shown in Fig. 1 or Fig. 2. A modified keel block cast from the
Castings and is the direct responsibility of Subcommittee A04.02 on Malleable and
mold shown in Fig. 3 may be substituted for the 1-in. Y-block
Ductile Iron Castings.
or the 1-in. keel block. The test coupons shall be cast in open
Current edition approved June 15, 1984. Published December 1984. Originally
molds made of suitable core sand having a minimum wall
published as A 536 – 65T. Last previous edition A 536 – 80.
1 1
Annual Book of ASTM Standards, Vol 01.03.
thickness of 1 ⁄2 in. (38-mm) for the ⁄2-in. (12.5 mm) and 1-in.
Annual Book of ASTM Standards, Vol 01.02.
(25-mm) sizes and 3-in. (75-mm) for the 3-in. size. The
Annual Book of ASTM Standards, Vol 03.01.
5 coupons shall be left in the mold until they have cooled to a
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. black color (approximately 900°F (482°C) or less). The size of
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 536
TABLE 1 Tensile Requirements
Grade Grade Grade Grade Grade
60-40-18 65-45-12 80-55-06 100-70-03 120-90-02
Tensile strength, min, psi 60 000 65 000 80 000 100 000 120 000
Tensile strength, min, MPa 414 448 552 689 827
Yield strength, min, psi 40 000 45 000 55 000 70 000 90 000
Yield strength, min, MPa 276 310 379 483 621
Elongation in 2 in. or 50 mm, min, % 18 12 6.0 3.0 2.0
TABLE 2 Tensile Requirements for Special Applications
Grade Grade Grade
60-42-10 70-50-05 80-60-03
Tensile strength, min, psi 60 000 70 000 80 000
Tensile strength, min, MPa 415 485 555
Yield strength, min, psi 42 000 50 000 60 000
Yield strength, min, MPa 290 345 415
Elongation in 2 in. or 50 mm, 10 5 3
min, %
“Y’’ Block Size
For Castings
For Castings For Castings
of Thickness
of Thickness of Thickness
Dimen- ⁄2 in.
Less Than of 1 ⁄2 in.
sions (13 mm) to
⁄2 in. (38 mm)
1 ⁄2 in.
(13 mm) and Over
(38 mm)
in. mm in. mm in. mm
A ⁄2 13 1 25 3 75
5 1
B1 ⁄8 40 2 ⁄8 54 5 125
C 2 50 3 75 4 100
D 4 100 6 150 8 200
E 7 175 7 175 7 175
approx approx approx approx approx approx
FIG. 2 Y-Blocks for Test Coupons
cooling rate equivalent to that obtained with the test molds
Metric Equivalents
shown in Figs. 1 and 2, Figs. 4-6, or Appendix X2. The size
in. mm in. mm
1 1 (cooling rate) of the coupon chosen to represent the casting
⁄2 12.7 1 ⁄2 38.1
1 25.4 2 ⁄2 63.5
should be decided by the purchaser. If test coupon size is not
specified, the manufacturer shall make the choice. When test
NOTE—The length of the keel block shall be 6 in. (152 mm).
bars will be cut from castings, test bar location shall be agreed
FIG. 1 Keel Block for Test Coupons
on by the purchaser and manufacturer and indicated on the
casting drawing. The manufacturer shall maintain sufficient
coupon cast to represent the casting shall be at the option of the
controls and control documentation to assure the purchaser that
purchaser. In case no option is expressed, the manufacturer
properties determined from test coupons or test bars are
shall make the choice.
representative of castings shipped.
6.2 When investment castings are made to this specification,
6.4 The test coupons shall be poured from the same ladle or
the manufacturer may use test specimens cast to size incorpo-
heat as the castings they represent.
rated in the mold with the castings, or separately cast to size
6.5 Test coupons shall be subjected to the same thermal
using the same type of mold and the same thermal conditions
treatment as the castings they represent.
that are used to produce the castings. These test specimens
shall be made to the dimensions shown in Fig. 1 of Specifica-
7. Special Requirements
tion A 732 or Figs. 5 and 6 of Methods and Definitions A 370.
6.3 The manufacturer may use separately cast test coupons 7.1 When specified in the contract or purchase order,
or test specimens cut from castings when castings made to this castings shall meet special requirements as to hardness, chemi-
specification are nodularized or inoculated in the mold. Sepa- cal composition, microstructure, pressure tightness, radio-
rately cast test coupons shall have a chem
...