Tellurium Copper | McMaster-Carr

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Material

Diameter

Shape

Thickness

Width

Length

Temper Rating

Temper Designation

Certificate Type

Material Certificate with Traceable Lot Number

System of Measurement

Inch

Hardness Rating

Not Rated

Thermal Conductivity @ Temperature

205 BTU/(hr⋅ft⋅°F) @ 68° F

DFARS Specialty Metals

Appearance

REACH

Tolerance Rating

Hardness

Melting Point Temperature

1,924° F

RoHS

Compliant

Density

0.323 lb/in³

Export Control Classification Number (ECCN)

EAR99

Yield Strength

10,000 psi to 19,999 psi

30,000 psi to 99,999 psi

Elongation

12%

21%

Heat Treatable

Modulus of Elasticity

Fabrication

29 Products

About Copper, Brass & Bronze

Compare over 30 copper, brass, and bronze alloys to find the right material for you—all with material certificates for traceability.

Easy-to-Machine 145 Copper Rods

Yield Strength: 30,000 psi
Hardness: Not Rated
Temper: H02 (1/2 Hard)
Heat Treatable: No

Also called tellurium copper, 145 copper contains tellurium, which makes it more machinable than all other copper while maintaining good corrosion resistance and high electrical conductivity. It’s often used for transformer and circuit-breaker terminals, welding torch tips, and fasteners.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/8"	-0.0025" to 0.0025"	0000000	00	00000	00000
3/16"	-0.0025" to 0.0025"	0000000	00	00000	00000
1/4"	-0.0025" to 0.0025"	0000000	00	00000	00000
5/16"	-0.0025" to 0.0025"	0000000	00	00000	00000
3/8"	-0.0025" to 0.0025"	0000000	00	00000	00000
1/2"	-0.0025" to 0.0025"	0000000	000000	00000	000000
5/8"	-0.0025" to 0.0025"	0000000	00000	000000	000000
3/4"	-0.0025" to 0.0025"	0000000	00000	000000	000000
7/8"	-0.0025" to 0.0025"	0000000	00000	000000	000000
1"	-0.0025" to 0.0025"	0000000	000000	000000	000000
1 1/8"	-0.0025" to 0.0025"	0000000	000000	000000	000000
1 1/4"	-0.0025" to 0.0025"	0000000	000000	000000	000000
1 3/8"	-0.0025" to 0.0025"	0000000	000000	000000	000000
1 1/2"	-0.0025" to 0.0025"	0000000	000000	000000	000000
1 5/8"	-0.0025" to 0.0025"	0000000	000000	000000	000000
1 3/4"	-0.0025" to 0.0025"	0000000	000000	000000	000000
2"	-0.0025" to 0.0025"	0000000	000000	000000	00000000

Easy-to-Machine 145 Copper Bars

Yield Strength: 18,000 psi
Hardness: Not Rated
Temper: H04 (Full Hard)
Heat Treatable: No

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

1/4" Thick. (-0.005" to 0.005" Tolerance)
Wd.		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
2"	0000000	000000	0000000	0000000
4"	0000000	00000	000000	000000
6"	0000000	000000	000000	000000
3/8" Thick. (-0.005" to 0.005" Tolerance)
2"	0000000	00000	000000	000000
4"	0000000	000000	000000	000000
6"	0000000	000000	000000	000000
1/2" Thick. (-0.005" to 0.005" Tolerance)
2"	0000000	000000	000000	000000
4"	0000000	000000	000000	000000
6"	0000000	000000	000000	00000000
3/4" Thick. (-0.005" to 0.005" Tolerance)
4"	0000000	000000	000000	00000000
6"	0000000	000000	000000	00000000
1" Thick. (-0.005" to 0.005" Tolerance)
4"	0000000	000000	000000	00000000