COPPER ALLOY 230 Red Brass

Copper Alloy 230 is composed of 85% copper and 15% zinc. It is often referred to as red brass and has excellent resistance against dezincification, season cracking and pitting. With its inherent rich color, it has become an extremely popular metal used for both outdoor and for adding architectural details.

Comet Metals Inc presently stocks Copper Foil and Copper Sheet metal in thicknesses of 0.004 to 0.100 inches in a variety of tempers. Our slitting capabilities range from the narrowest of 3/8th inch wide on all items and as wide as 36 inches wide in certain foil gauges. In most cases, our Copper stock is 24 inches wide on all other gauges. Our current inventory stocks the Cooper Alloy 230 and a few oxygen-free alloys as well.

  • Copper Alloy 230

Comet Metals welcomes any opportunity in Copper Foil,  Copper Coil or sheet products that you may require. Call us at 888-539-5602 today for a quote and learn for yourself  how Comet Metals can assist you in your converter projects. The specifications shown on these pages are not for design purposes.

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Alloy Class:Brasses
Alloy Name:Red Brass
ASTM Standards:B-36
CDA Number:230
FinishStandard Finishes
Temper:Annealed. (Others Upon Request)
Thickness:0.004 to 0.100 in
Width:Up to 12 in
Copper (Cu):85%
Nickel (Ni): -
Oxygen (O2):-
Phosphorus (P):-
Tin (Sn):-
Zinc (Zn):15%
Coefficient of Thermal Expansion: *10.4 Inches/inch/°F x 1,000,000
Density: **0.316 lbs./cu.in.
Electrical Conductivity: ***37 % IACS
Elongation (1/2 Hard):8 to 21
Elongation (1/4 Hard):15 to 39
Elongation (3/4 Hard):4 to 12
Elongation (Annealed): ✦43 to 48
Elongation (Extra Hard):3 to 5
Elongation (Hard):5 to 9
Elongation (Spring):3 to 4
Hard Elongation (Extra Spring Hard):2 (Min)
Modulus Of Elasticity: ⁑17 x 1,000,000 psi
Rockwell (1/2 Hard):56 to 64
Rockwell (1/4 Hard): 42 to 57
Rockwell (3/4 Hard):63 to 68
Rockwell (Annealed): ↠15 to 44
Rockwell (Extra Hard):70 to 74
Rockwell (Extra Spring):75 to 77
Rockwell (Hard):67 to 71
Rockwell (Spring):74 to 76
Tensile Strength (1/2 Hard):51 to 61 x 1000 psi
Tensile Strength (1/4 Hard):44 to 54 x 1000 psi
Tensile Strength (3/4 Hard):57 to 67 x 1000 psi
Tensile Strength (Annealed): ✧39 to 47 x 1000 psi
Tensile Strength (Extra Hard):72 to 80 x 1000 psi
Tensile Strength (Extra Spring Hard):82 to 90 x 1000 psi
Tensile Strength (Hard):63 to 72 x 1000 psi
Tensile Strength (Spring):78 to 86 x 1000 psi
Thermal Conductivity: ♦92 BTU/sq.ft./hr/°F
Yield Strength (1/2 Hard):43 to 54 x 1000 psi
Yield Strength (1/4 Hard):23 to 48 x 1000 psi
Yield Strength (3/4 Hard):51 to 60 x 1000 psi
Yield Strength (Annealed): ↡8 to 19 x 1000 psi
Yield Strength (Extra Hard):65 to 71 x 1000 psi
Yield Strength (Extra Spring Hard):73 to 80 x 1000 psi
Yield Strength (Hard):57 to 65 x 1000 psi
Yield Strength (Spring):69 to 76 x 1000 psi
* Inches/inch/°F x 106 from 68°F to 572°F (20°C to 300°C)

** Lbs.per cu.in. at 68°F (Annealed) ( x 27.68 gms./cu.Cm. at 20°C)

*** % IACS at 68°F (20°C) as annealed

✦ % in 2 inches

⁑ x 106 PSI, tension

↠ 0.020 gauge and above (30T scale)

✧ x 1000 psi

♦ 9.4 BTU per sq.ft.per hr. per °F

↡ 0.2% offset