ASTM B3 Copper | McMaster-Carr

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51 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.

Mirror-Like Multipurpose 110 Copper Wire

Spool

Temper Rating: Softened (Annealed)
Heat Treatable: No
Tensile Strength: 29,000 psi
Specifications Met: ASTM B3

This wire is polished to a mirror-like finish. Offering high electrical conductivity and formability, 110 copper is 99.9% pure. Also known as ETP copper, it's often used as grounding wire. It has a soft temper and will stay in place when bent.

1/4 lbs. Spool
Dia.	Dia. Tolerance	Mechanical Finish	Lg., ft.		Each
0.003"	-0.0001" to 0.0001"	Polished	6,000	0000000	000000
0.005"	-0.0001" to 0.0001"	Polished	3,200	0000000	00000
0.008"	-0.0001" to 0.0001"	Polished	1,965	0000000	00000
0.01"	-0.0001" to 0.0001"	Polished	785	0000000	00000
0.012"	-0.0001" to 0.0001"	Polished	495	0000000	00000
0.016"	-0.0004" to 0.0004"	Polished	315	0000000	00000
0.02"	-0.0004" to 0.0004"	Polished	195	0000000	0000
0.025"	-0.0004" to 0.0004"	Polished	125	0000000	0000
0.032"	-0.0004" to 0.0004"	Polished	78	0000000	0000
0.04"	-0.0004" to 0.0004"	Polished	49	0000000	0000
0.051"	-0.0006" to 0.0006"	Polished	31	0000000	0000
0.064"	-0.0006" to 0.0006"	Polished	20	0000000	0000
1 lbs. Spool
0.012"	-0.0001" to 0.0001"	Polished	1,990	0000000	00000
0.016"	-0.0004" to 0.0004"	Polished	1,260	0000000	00000
0.02"	-0.0004" to 0.0004"	Polished	790	0000000	00000
0.025"	-0.0004" to 0.0004"	Polished	500	0000000	00000
0.032"	-0.0004" to 0.0004"	Polished	315	0000000	00000
0.04"	-0.0004" to 0.0004"	Polished	195	0000000	00000
0.051"	-0.0006" to 0.0006"	Polished	125	0000000	00000
0.064"	-0.0006" to 0.0006"	Polished	80	0000000	00000
5 lbs. Spool
0.012"	-0.0001" to 0.0001"	Polished	9,950	0000000	000000
0.016"	-0.0004" to 0.0004"	Polished	6,300	0000000	000000
0.02"	-0.0004" to 0.0004"	Polished	3,965	0000000	000000
0.025"	-0.0004" to 0.0004"	Polished	2,505	0000000	000000
0.032"	-0.0004" to 0.0004"	Polished	1,575	0000000	000000
0.04"	-0.0004" to 0.0004"	Polished	995	0000000	000000
0.051"	-0.0006" to 0.0006"	Polished	630	0000000	000000
0.064"	-0.0006" to 0.0006"	Polished	400	0000000	000000
15 lbs. Spool
0.012"	-0.0001" to 0.0001"	Polished	29,850	0000000	000000
0.016"	-0.0004" to 0.0004"	Polished	18,900	0000000	000000
0.02"	-0.0004" to 0.0004"	Polished	11,895	0000000	000000
0.025"	-0.0004" to 0.0004"	Polished	7,515	0000000	000000
0.032"	-0.0004" to 0.0004"	Polished	4,725	0000000	000000
0.04"	-0.0004" to 0.0004"	Polished	2,985	0000000	000000
0.051"	-0.0006" to 0.0006"	Polished	1,890	0000000	000000
0.064"	-0.0006" to 0.0006"	Polished	1,200	0000000	000000

Super-Conductive 102 Copper Balls

Yield Strength: Not Rated
Hardness: Not Rated
Temper: H04 (Full Hard)
Heat Treatable: No
Specifications Met: ASTM B2, ASTM B3

With 99.95% copper content, 102 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 lug.

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

Mirror-Like
Dia.	Dia. Tolerance	Mechanical Finish	Pkg. Qty.		Pkg.
1/16"	-0.001" to 0.001"	Tumbled	100	00000000	000000
5/64"	-0.001" to 0.001"	Tumbled	100	00000000	00000
3/32"	-0.001" to 0.001"	Tumbled	100	00000000	00000

Grounding Wire

Ground your electrical system.

Flexible Grounding Wire

Noninsulated

Noninsulated Solid Wire
Wire Gauge	OD	Material	Specifications Met		5ft.	25ft.	50ft.	100ft.
10	0.1"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	000000	000000	000000
8	0.13"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	00000	00000
6	0.16"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	00000	000000
4	0.2"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	000000	000000
2	0.26"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	000000	000000
Noninsulated Stranded Wire
10	0.12"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	00000	000000
8	0.15"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	00000	000000
6	0.18"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	00000	000000
4	0.23"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	000000	000000
2	0.29"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	00000	000000	000000
1/0	0.36"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	000000	000000	000000
2/0	0.4"	Copper	ASTM B3, ASTM B8, Federal Standard QQ-W-343 Class B	0000000	00000	000000	000000	000000