1/4 Hard Copper | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thickness Thickness

	Width Width

12"

24"

36"

	Length Length

	Material Material

Copper

Brass

	Appearance Appearance

Plain

Mirror-Like

Brushed

	Shape Shape

	Sheet and Bar
	Rod and Disc

	Temper Rating Temper Rating	Show

1/4 Hard

	Temper Rating Temper Rating	Hide

	Specifications Met Specifications Met

	Temper Temper

H00

H01

H02

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Hardness Rating Hardness Rating

Soft

Medium

Not Rated

	Thermal Conductivity Thermal Conductivity

67 Btu/hr. × ft./°F @ 68° F

70 Btu/hr. × ft./°F @ 68° F

226 Btu/hr. × ft./°F @ 68° F

	Tolerance Rating Tolerance Rating

Standard

	Yield Strength Yield Strength

Less than 10,000 psi

30,000 to 39,999 psi

40,000 psi or greater

Not Rated

	Hardness Hardness

	Fabrication Fabrication

Cold Worked

	Melting Point Temperature Melting Point Temperature

	Modulus of Elasticity Modulus of Elasticity

15.0 ksi × 10³

16.0 ksi × 10³

17.0 ksi × 10³

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Heat Treatable Heat Treatable

	Density Density

	Surface Resistivity Surface Resistivity

10.3 Ohms

37.5 Ohms

39.9 Ohms

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307 Products

About Copper, Brass, and Bronze

Multipurpose 110 Copper Sheets and Bars

Offering high electrical conductivity and formability, 110 copper is 99.9% pure. Also known as ETP copper, it's often used in electrical applications, such as for bus bars and wire connectors, as well as for flashing, gaskets, and rivets.

Mirror-Like Multipurpose 110 Copper Sheets

Polished on one side to a reflective, mirror-like finish.

Brushed Multipurpose 110 Copper Sheets

One side of these sheets has a brushed finish with grain lines running in one direction to mask fingerprints.

Super-Conductive 101 Copper Sheets and Bars

With 99.99% copper content, 101 copper has higher purity than 110 copper, resulting in superior electrical conductivity. It's commonly called OFE and OFHC copper. Use it in electrical applications, such as for coaxial cables and terminal lugs.

Brass

Ultra-Formable 260 Brass Sheets and Strips

The most formable brass we offer, 260 offers better weldability than 300 series brass but it’s not as machinable. Sometimes called cartridge brass, it's commonly used for ammunition casings, radiator components, and decorative door hardware.

Brushed Ultra-Formable 260 Brass Sheets

One side of these sheets has a brushed finish with grain lines running in one direction to mask fingerprints.

Mirror-Like Ultra-Formable 260 Brass Sheets

Polished on one side to a reflective, mirror-like finish.

Ultra-Formable 260 Brass Rods

Mirror-Like Weldable Marine-Grade 464 Brass Sheets

Polished on one side to a reflective, mirror-like finish.

Brushed Weldable Marine-Grade 464 Brass Sheets

One side of these sheets has a brushed finish with grain lines running in one direction to mask fingerprints.