Standard Specification for Copper-Silicon Alloy Rod, Bar and Shapes

Scope:-

1) This specification establishes requirements for copper-silicon rod, bar, and shapes for UNS Copper Alloys C65100 & C65500.

Material and Manufacture.

Materials - The starting material shall be cast billets or rods of Copper Alloy UNS Nos. C65100, C65500, or C66100, and shall be of such soundness and structure as to enable them to be processed into the product specified in the contract or purchase order.
Manufacture - The product shall be manufactured by such hot-working, cold-working, straightening, and annealing processing as to produce a uniform wrought structure and obtain the required finish properties

Chemical Requirements

Composition, % Maximum
(Unless Shown as a Range or Minimum)
Copper Alloy UNS No.
C65100 C65500
Copper (Includes silver) remainder remainder
Lead 0.05 0.05
Iron 0.8 0.8
Zinc 1.5 1.5
Manganese 0.7 0.50–1.3
Silicon 0.8–2.0 2.8–3.8
Nickel (includes cobalt) ... 0.6

Chemical Composition

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

Test Methods

In cases of disagreement, test methods for chemical composition shall be subject to agreement between the manufacturer or supplier and the purchaser. The following table is a list of published test methods some of which are considered by ASTM as no longer viable. These, and others not listed, may be used subject to agreement.

Test Method(s) to be followed for the determination of elements required by contractual or purchase order agreement shall be as agreed upon between the supplier and purchaser.

Element Test Methods
Copper E478
Lead E478,Atomic absorption
Manganese E62
Nickel E478,Photometric
Silicon E62
Zinc E478,Atomic absorption

Tensile Requirements, Inch-Pound

Temper Designation Diameter or Distance Between Parallel
Surfaces,A in		 Tensile Strength min,
ksi		 Yield Strength at 0.5 % Extension Under Load,
min, ksi		 Elongation in 4 × Diameter or Thickness of Specimen,
min, %B
Code Name
Copper Alloy UNS No. C65100 Rods, Bars, and Shapes
O60 Soft anneal All forms, all sizes 40 12 30
H02 Half-hard Rods:
Up to 1⁄2 , incl 55 20 11
Over 1⁄2 to 2, incl 55 20 12
Bars and shapes C C C
H04 Hard Rods:
Up to 1⁄2 , incl 65 35 8
Over 1⁄2 to 2, incl 65 35 10
Bars and shapes C C C
H06 Extra-hard Rods:
Up to 1⁄2 , incl 85 55 6
Over 1⁄2 to 1, incl 75 45 8
Over 1 to 11⁄2, incl 75 40 8
Copper Alloy UNS Nos. C65500 Rectangular Bars.
O60 Soft anneal All sizes 52 15 35
H04 Hard Up to 1, incl 65 38 20
Over 1 to 11⁄2, incl 60 30 25
Over 11⁄2 to 3, incl 55 24 27
Copper Alloy UNS Nos. C65500 and Square Bars, and Shapes.
O60 Soft anneal All forms, all sizes 52 15 35
H01 Quarter-hard All forms, all sizes 55 24 25
H02 Half-hard Rods and square bars:
Up to 2, incl 70 38 20
Shapes C C C
H04 Hard Rods and square bars:
Up to 1⁄4 , incl 90 55 8
Over 1⁄4 to 1, incl 90 52 13
Over 1 to 11⁄2, incl 80 43 15
Over 11⁄2 to 3, incl 70 38 17
Over 3 C C C
Shapes C C C
H06 Extra-hard Rods: up to 1⁄2 , incl 100 55 7

A For rectangular bar, the Distance Between Parallel Surfaces refers to thickness.
B In any case a minimum gage length of 1 in. shall be used.
C As agreed upon between manufacturer and purchaser.

Tensile Requirements, SI

Temper Designation Diameter or Distance Between Parallel
Surfaces, Amm		 Tensile Strength min,
MPa		 Yield Strength at 0.5 %
Extension Under Load,
min, MPa		 Elongation,
min, %B
Code Name
Copper Alloy UNS No. C65100 Rods, Bars, and Shapes
O60 Soft anneal All forms, all sizes 275 85 30
H02 Half-hard Rods:
Up to 12, incl 380 140 11
Over 12 to 50, incl 380 140 12
Bars and shapes C C C
H04 Hard Rods:
Up to 12, incl 450 240 8
Over 12 to 50, incl 450 240 10
Bars and shapes C C C
H06 Extra-hard Rods:
Up to 12, incl 585 380 6
Over 12 to 25, incl 515 310 8
Over 25 to 38, incl 515 275 8
Copper Alloy UNS Nos. C65500 and Rectangular Bars
O60 Soft anneal All sizes 360 105 35
H04 Hard Up to 25, incl 450 260 20
Over 25 to 38, incl 415 205 25
Over 38 to 75, incl 380 165 27
Copper Alloy UNS Nos. C65500 and Rods, Square Bars, and Shapes
O60 Soft anneal All forms, all sizes 360 105 35
H01 Quarter-hard All forms, all sizes 380 165 25
H02 Half-hard Rods and square bars:
Up to 50, incl 485 260 20
Shapes C C C
H04 Hard Rods and square bars:
Up to 6, incl 615 380 8
Over 6 to 25, incl 615 360 13
Over 25 to 38, incl 545 295 15
Over 38 to 75, incl 485 260 17
Over 75 C C C
Shapes C C C
H06 Extra-hard Rods: up to 12, incl 690 380 7

A For rectangular bar, the Distance Between Parallel Surfaces refers to thickness.
B Elongation values are based on a gage length of 5.65 times the square root of the area for dimensions greater than 2.5 mm.
C As agreed upon between manufacturer and purchaser.

Rockwell Hardness Requirements, Inch-PoundA

Temper Designation Diameter or Distance Between Parallel
Surfaces,Bin.		 Rockwell B Hardness Determined on the Cross Section
Midway Between Surface and Center
Code Name
Copper Alloy UNS No. C65100 Rods, Bars, and Shapes
H02 Half-hard 0.5 to 2.0 , incl 60–85
H04 Hard 0.5 to 2.0, incl 65–90
H06 Extra-hardC 0.5 to 1.5, incl 75–95
Copper Alloy UNS Nos. C65500 and Rectangular Bars
H04 Hard 0.5 to 3.0, incl 60–95
Copper Alloy UNS Nos. C65500 Rods, Square Bars, and Shapes
H02 Half-hard 0.5 to 1.0, incl 75–95
over 1.0 to 1.5, incl 75–95
over 1.5 to 3.0, incl 75–95
H04 Hard 0.5 to 1.0, incl 85–100
over 1.0 to 1.5, incl 80–95
over 1.5 to 3.0, incl 75–95

A Rockwell hardness requirements are not established for diameters less than 0.5 in.
B For rectangular bar, the Distance Between Parallel Surfaces refers to thickness.
C Bars and shapes are not produced in the H06 temper.

Rockwell Hardness Requirements, SIA

Temper Designation Diameter or Distance Between Parallel
Surfaces,Bmm.		 Rockwell B Hardness Determined on the
Cross Section Midway Between Surface and Center
Code Name
Copper Alloy UNS No. C65100 Rods, Bars, and Shapes
H02 Half-hard 12 to 50, incl 60–85
H04 Hard 12 to 50, incl 65–90
H06 Extra-hardC 12 to 50, incl 75–95
Copper Alloy UNS Nos. C65500 Rectangular Bars
H04 Hard 12 to 75, incl 60–95
Copper Alloy UNS Nos. C65500 Rods, Square Bars, and Shapes
H02 Half-hard 12 to 25, incl 75–95
over 25 to 38, incl 75–95
over 38 to 75, incl 75–95
H04 Hard 12 to 25, incl 85–100
over 25 to 38, incl 80–95
over 38 to 75, incl 75–95

A Rockwell hardness requirements are not established for diameters less than 12 mm.
B For rectangular bar, the Distance Between Parallel Surfaces refers to thickness.
C Bars and shapes are not produced in the H06 temper.

Temper:-

1) Soft annealed O60,
2) 1⁄4-hard H01,
3) 1⁄2-hard H02,
4) Hard H04,
5) Extra-hard H06,
6) As hot rolled M20, and
7) As hot extruded M30.
8) Product of bars and shapes in the temper H06 is normally not produced.

Mechanical Property Requirements:-

1) Product furnished under this specification shall conform to the tensile and hardness requirements prescribed in Tables 2-5 for the Copper Alloy UNS No. designation specified in the ordering information.
2) Rockwell Hardness Requirement—For the alloys and tempers listed, product 0.5 in. [12 mm] and over in diameter or distance between parallel surfaces shall conform with the requirements given in Table 4 and Table 5, when tested in accordance with Test Methods E18.
3) For the alloys and tempers listed in Table 4 and Table 5, Rockwell hardness shall be the basis of acceptance or rejection for mechanical properties except when the tensile test is specified in the contract or purchase order.
4)Tensile Strength Requirements—The product shall conform with the requirements of Table 2 and Table 3 when tested in accordance with Test Methods E8/E8M.
5) The tensile requirements for all alloys and forms of M20 and M30 tempers shall be as agreed upon between the manufacturer and purchaser at time of order.

Dimensions, Mass and Permissible Variations:-

1) Diameter or Distance Between Parallel Surfaces:
2) Rod: Round, Hexagonal, Octagonal—Refer to Table 1 for Alloy C65100 and to Table 2 for Alloys C65500 and C66100.
3) Rod: Round M20 Temper
4) Rod: Round, Hexagonal, Octagonal, M30 Temper
5) Bar: Rectangular and Square—Refer to Tables 8 and 10 for Alloy C65100, and Tables 9 and 11 for Alloys C65500.
6) Bar: M30 Temper—Refer to Table 5 for thickness and width tolerances.
7) Shapes—The dimensional tolerance for shapes shall be as agreed upon between the manufacturer and the purchaser, and shall be specified in the order.
8) Length: Rod, Bar and Shapes
9) Edge Contours: Rod and Bar

Include the following specified choices when placing orders for product under this specification, as applicable:-

1) ASTM Designation and year of issue,
2) Copper Alloy UNS No. designation,
3) Temper designation (see Temper Section 7),
4) Quantity; total weight or length, or number of pieces of each temper, form, or alloy,
5) Dimensions; diameter or distance between parallel surfaces,
6) Type of edge; edge contours,
7) How furnished; specific lengths with or without ends, and Intended application.

Referenced Documents

Standards Description
B124/B124M Specification for Copper and Copper Alloy Forging Rod,Bar and Shapes.
B249/B249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod,Bar,Shapes and Forgings.
B950 Guide for Editorial Procedures and Form of Product Specification for Copper and Copper Alloys.
B601 Classification for Temper Designation for Copper and Copper - Wrought and cast
E8/E8M Test Methods for Tension Testing of Metallic Materials.
E18 Test Methods for Rockwell Hardness of Metallic Materials.
E62 Test Methods for Chemical Analysis of copper

Keywords:-

copper—rod, bar, shapes; copper-silicon alloy; high silicon bronze A; low silicon bronze B; silicon bronze; UNS No. C65100; UNS No. C65500; UNS No. C66100.