Standard Specification for Copper-Silicon Alloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and Pressure Vessels

Chemical Composition.

1) The material shall conform to the chemical composition requirements prescribed in Table 1 for the copper alloy UNS No. designation specified in the ordering information.
2) These composition limits do not preclude the presence of other elements. By agreement between manufacturer or supplier and the purchaser, limits may be established and analysis required for unnamed elements.
3) For alloys in which copper is listed as “remainder”, copper is the difference between the sum of the results of all the elements determined and 100 %.
4) When all the elements in Table 1 are determined, the sum of results shall be 99.5 % min.

Chemical Requirements

Temper

The standard tempers for products described in this specification are
Tempers, as defined in Classification B601 available under this specification are:
O61 (annealed),
O50 (light anneal),
H01 (quarter hard),
H02 (half-hard),
H03 (three-quarter hard),
H04 (hard),
H06 (extra-hard),
H08 (spring),
H10 (extra-spring),
H14 (super-spring),
M20 (as hot-rolled), and
M25 (as hot-rolled and rerolled).

Grain Size for Annealed Tempers

The approximate grain size values for annealed tempers given in Tables 2-5 are for general information and shall not be used as a basis for product rejection.

Mechanical Property Requirements

1) Tensile Strength Requirements —The tension test shall be the standard test for all tempers of rolled, annealed, and hot-rolled materials. Acceptance or rejection based on mechanical properties shall depend only on the tensile properties, which shall conform to the requirements prescribed in Table 2, Table 3, Table 4 or Table 5. Tension test specimens shall be taken so the longitudinal axis of the specimen is parallel to the direction of rolling.
For Pressure Vessel Code Applications, the tensile requirements are prescribed in Tables 4 and 5.
For general purpose applications, the tensile requirements are prescribed in Tables 2 and 3.
2) Rockwell Hardness Requirements —The approximate Rockwell hardness values given in Tables 2-5 are for general information and assistance in testing and shall not be used as a basis for product rejection.

Tensile Strength Requirements and Approximate Rockwell Hardness and Grain Size Values, Inch-pound

Tensile Strength Requirements and Approximate Rockwell Hardness and Grain Size Values, SI

Tensile Strength Requirements and Approximate Rockwell Hardness and Grain Size Values for Pressure Vessel Applications, Inch-Pound

Tensile Strength Requirements and Approximate Rockwell Hardness and Grain Size Values for Pressure Vessel Applications, SI

Workmanship, Finish, and Appearance

1) For workmanship and appearance requirements, refer to either Specification B248 or B248M.
2) Finish — The material is supplied regularly in the following finishes:
Black — After hot rolling retains all of the oxides.
Plain Pickled — Sulfuric acid pickle only, brick red oxide; has cuprous and silicon oxides still adherent.
Specially Cleaned—Commercially free of all oxides; has the golden color of the alloy.
Sand Blasted — Commercially free of all oxides; has a dull gray color.

Ordering Information

ASTM designation and year of issue,
Copper Alloy UNS No. designations (Section 1),
Temper (Section 7),
Dimensions: Thickness, Width, and Length (Section 11),
Finish (section 12.2),
Type of edge, if required: slit, sheared, sawed, square corners, rounded corners, rounded edges or full rounded edges (11.6),
How furnished (straight lengths or coils),
Weight (11.7),
Intended application.
The following options are available, but may not be included unless specified at the time of placing the order, when required.
Mill test (Section 18),
Certification (Section 17),
Product identification for ASME Boiler and Pressure Vessel Code applications (Specifications B248 or B248M),
If product is ordered for ASME Boiler and Pressure Vessel Code application, (1.2, 11.1, 11.2.1, and 11.7.1),
Whether 0.2 % yield strength is required (Table 3),
If product is purchased for agencies of the U.S. Government (Section 10).
If specification number must be shown on package marking (Section 19.2.2).

Referenced Documents