SPECIFICATION FOR COMPOSITION BRONZE OR
OUNCE METAL CASTINGS
SB-62
(Identical with ASTM Specification B 62-93 for the alloy covered except for the deletion of Supplementary Requirements and ed-
itorial differences. Certification has been made mandatory.)
1. Scope 2.1.2 ASME Standard:
SB-824 Specification for General Requirements for Cop-
1.1 This specification establishes requirements for an
per-Alloy Castings
alloy having a composition of copper, tin, lead, and
zinc, used for component castings of valves, flanges, 2.1.3 MSS Standard:
and fittings. The common trade name of this alloy is SP-25 Standard Marking System for Valves, Fittings,
85-5-5-5; the correct identification is Copper Alloy Flanges and Unions
UNS No. C83600.
3. General Requirements
1.2 The castings covered are used in products that
may be manufactured in advance and supplied from 3.1 Material furnished under this specification shall
stock from the manufacturer or other dealer. conform to the applicable requirements of Specification
SB-824.
1.3 The values stated in inch-pound units are to
be regarded as the standard. Metric values given in 4. Ordering Information
parentheses are for information only. 4.1 Orders for castings under this specification shall
include the following:
4.1.1 Quantity of castings required,
2. Applicable Documents
4.1.2 Copper Alloy UNS No. (Table 1),
2.1 The following documents of the issue in effect
on date of material purchase form a part of this 4.1.3 Specification title, number, and year of issue,
specification to the extent referenced herein:
4.1.4 Pattern or drawing number and condition
2.1.1 ASTM Standards: (as-cast, machined, etc),
B 208 Recommended Practice for Preparing Tension Test
Specimens for Copper-Base Alloys for Sand Castings 4.1.5 Chemical analysis of residual elements, if
E 8 Tension Testing of Metallic Materials specified in the purchase order (Specification SB-824),
E 29 Recommended Practice for Indicating Which Places
4.1.6 Pressure test requirements, if specified in the
of Figures Are to Be Considered Significant in Speci-
purchase order (Specification SB-824),
fied Limiting Values
E 54 Chemical Analysis of Special Brasses and Bronzes 4.1.7 Soundness requirements, if specified in the
E 62 Photometric Methods for Chemical Analysis of purchase order (Specification SB-824),
Copper and Copper Alloys
E 478 Chemical Analysis of Copper Alloys 4.1.8 Certification, if specified in the purchase
E 527 Practice for Numbering Metals and Alloys order (Specification SB-824),
35
SB-62 2001 SECTION II
TABLE 1 TABLE 2
CHEMICAL REQUIREMENTS, COPPER ALLOY UNS TENSILE PROPERTIES
NO. C83600
Tensile strength, min., ksiA (MPaB) 30 (205)
Major Elements Composition, % max (Except as Indicated) Yield strength,C min., ksiA (MPaB) 14 (95)
Elongation in 2 in. or 50 mm, min. % 20
Copper 84.0–86.0 A
ksi p 1,000 psi.
Tin 4.0–6.0 B
See Appendix.
Lead 4.0–6.0 C
Yield strength shall be determined as the stress producing an
Zinc 4.0–6.0
elongation under load of 0.5%, that is, 0.01 in. (0.25 mm) in a
Nickel (incl Cobalt) 1.0A
gage length of 2 in. (51 mm).
Residual Elements Composition, % max (Except as indicated)
Iron 0.30
Antimony 0.25
Sulfur 0.08
Phosphorus 0.05 6. Mechanical Properties
Aluminum 0.005
Silicon 0.005 6.1 Mechanical properties shall be determined from
A
separately cast test bars and shall meet the requirements
In determining copper minimum copper may be calculated as copper shown in Table 2.
plus nickel.
7. Casting Repair
4.1.9 Foundry test report, if specified in the pur- 7.1 Castings shall not be repaired, plugged, welded,
chase order (Specification SB-824), or burned-in.
4.1.10 Witness inspection, if specified in the pur-
chase order (Specification SB-824),
8. Sampling
4.1.11 Packaging and Package Marking, if specified
in the purchase order (Specification SB-824 and Sec- 8.1 Copper Alloy UNS No. C83600 test bar castings
tion 10). shall be cast to the form and dimensions shown in
Fig. 2, 3, or 4 of Practice B 208.
4.2 When material is purchased for agencies of the
U.S. Government, the Supplementary Requirements in
Specification SB-824 may be specified.
9. Certification
9.1 The certification requirements of Specification B
5. Chemical Requirements 824 are mandatory.
5.1 The alloy shall conform to the requirements for
major elements specified in Table 1.
10. Packaging and Package Marking
5.2 These specification limits do not preclude the
presence of other elements. Limits may be established 10.1 Valves, flanges, and fittings shall be marked in
for unnamed elements by agreement between manufac- accordance with the latest revision of the Standard
turer or supplier and purchaser. Copper or zinc may Marking System for Valves, Fittings, Flanges, and
be given as remainder and may be taken as the difference Unions (No. SP-25) of the Manufacturers Standardiza-
between the sum of all elements analyzed and 100%. tion Society of the Valve and Fittings Industry, and
When all major elements in Table 1 are analyzed, their in such position as not to injure the usefulness of the
sum shall be as follows: casting.
Copper plus major elements, 99.3% minimum
5.3 It is recognized that residual elements may be
11. Keywords
present in cast copper base alloys. Analysis shall be
made for residual elements only when specified in the 11.1 copper-alloy castings; ounce metal castings; red
purchase order (Specification SB-824). brass castings; valve castings
36
PART B — NONFERROUS MATERIAL SPECIFICATIONS SB-62
APPENDIX
(Nonmandatory Information)
X1. METRIC EQUIVALENTS
X1.1 The SI unit for strength properties now shown
is in accordance with the International System of Units
(SI). The derived SI unit for force is the newton (N),
which is defined as that force which when applied to
a body having a mass of one kilogram gives it an
acceleration of one metre per second squared (N p
kg · m / s2). The derived SI unit for pressure or stress
is the newton per square metre (N/m2), which has been
named the pascal (Pa) by the General Conference on
Weights and Measures. Since 1 ksi p 6,894,757 Pa,
the metric equivalents are expressed as megapascal
(MPa), which is the same as MN/m2 and N/mm2.
37
