ASTM B187 Copper | McMaster-Carr

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Temper Rating

Appearance

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Material Certificate with Traceable Lot Number

Thermal Conductivity @ Temperature

226 BTU/(hr⋅ft⋅°F) @ 68° F

Fabrication

Tolerance Rating

Performance

Ultra Thermally Conductive

Melting Point Temperature

1,949° F

1,981° F

Surface Resistivity

10.3 cir. mil·ohm/ft

1× 10^9 cir. mil·ohm/ft

Hardness

RoHS

Compliant with Exemptions

Heat Treatment

Hardened

REACH

Compliant

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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190 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.

Performance

Weldable

Join metal pieces by melting them together at the seam

50 products

Application

Multipurpose

Balance conductivity and corrosion resistance

140 products

Finish

Silver Plated

Increase conductivity and slow tarnishing

9 products

Mechanical Finish

Polished

Make parts that are easy to keep clean

9 products

Multipurpose 110 Copper Bars

The benchmark for conductivity in metals, 110 is the most commonly used copper alloy. You'll see it turned into everything from wire connectors to flashings to rivets.

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

	Wd.	Temper Designation	Specs. Met		1/2 ft. Long	1 ft. Long	2 ft. Long	3 ft. Long	6 ft. Long
1/16" Thick (-0.004" to 0.004" Tolerance)



		1/2"	H02	ASTM B187	8964K21	00000	00000	00000	000000	000000


		5/8"	H02	ASTM B187	8964K1	0000	0000	0000	00000	00000
		3/4"	H02	ASTM B187	8964K2	0000	0000	00000	00000	00000
		1"	H02	ASTM B187	8964K3	0000	0000	00000	00000	00000
		2"	H02	ASTM B187	8964K23	0000	00000	00000	00000	00000


		1/8" Thick (-0.005" to 0.005" Tolerance)



				1/2"	H02	ASTM B187	8964K4	0000	0000	00000	00000	00000


				3/4"	H02	ASTM B187	8964K5	0000	00000	00000	00000	00000
				1"	H02	ASTM B187	8964K78	0000	00000	00000	00000	00000
				1 1/2"	H02	ASTM B187	8964K79	00000	00000	00000	00000	00000
				2"	H02	ASTM B187	8964K89	00000	00000	00000	00000	000000
				3"	H02	ASTM B187	8964K41	00000	00000	00000	000000	000000
				4"	H02	ASTM B187	8964K92	00000	00000	00000	000000	000000
				5"	H02	ASTM B187	8964K65	00000	00000	000000	000000	000000
				6"	H02	ASTM B187	8964K14	00000	00000	000000	000000	000000


				3/16" Thick (-0.004" to 0.004" Tolerance)



						3/4"	H02	ASTM B187	8964K221	00000	00000	00000	00000	00000


						1"	H02	ASTM B187	8964K222	00000	00000	00000	00000	00000
						1 1/2"	H02	ASTM B187	8964K223	00000	00000	00000	00000	000000
						2"	H02	ASTM B187	8964K927	00000	00000	00000	00000	000000
						3"	H02	ASTM B187	8964K16	00000	00000	00000	000000	000000
						4"	H02	ASTM B187	8964K94	00000	00000	000000	000000	000000


						1/4" Thick (-0.005" to 0.005" Tolerance)



								1/4"	H02	ASTM B187	89275K45	0000	0000	00000	00000	00000


								1/2"	H02	ASTM B187	8964K6	0000	00000	00000	00000	00000
								3/4"	H02	ASTM B187	8964K7	00000	00000	00000	00000	00000
								1"	H02	ASTM B187	8964K8	00000	00000	00000	00000	00000
								1 1/2"	H02	ASTM B187	8964K851	00000	00000	00000	00000	000000
								2"	H02	ASTM B187	8964K22	00000	00000	00000	00000	000000
								3"	H02	ASTM B187	8964K24	00000	00000	000000	000000	000000
								4"	H02	ASTM B187	8964K66	00000	00000	000000	000000	000000
								5"	H02	ASTM B187	8964K67	00000	000000	000000	000000	000000
								6"	H02	ASTM B187	8964K26	00000	000000	000000	000000	000000


								5/16" Thick (-0.004" to 0.004" Tolerance)



5/16"	H02									ASTM B187	89275K46	00000	00000	00000	00000	000000


1"	H02									ASTM B187	8964K68	00000	00000	00000	00000	000000
2"	H02									ASTM B187	8964K69	00000	00000	00000	000000	000000
4"	H02									ASTM B187	8964K9	00000	00000	000000	000000	000000


3/8" Thick (-0.005" to 0.005" Tolerance)



										3/8"	H02	ASTM B187	89275K35	0000	00000	00000	00000	00000


		1"	H02							ASTM B187	8964K871	00000	00000	00000	00000	000000
		1 1/2"	H02							ASTM B187	8964K28	00000	00000	00000	000000	000000
		2"	H02							ASTM B187	8964K31	00000	00000	000000	000000	000000
		3"	H02							ASTM B187	8964K13	00000	00000	000000	000000	000000
		4"	H02							ASTM B187	8964K33	00000	000000	000000	000000	000000
		6"	H02							ASTM B187	8964K35	000000	000000	000000	000000	000000


		1/2" Thick (-0.005" to 0.005" Tolerance)



										1/2"	H02	ASTM B187	89275K36	00000	00000	00000	00000	00000


										1"	H02	ASTM B187	8964K37	00000	00000	00000	00000	000000
				1 1/2"						H02	ASTM B187	8964K39	00000	00000	000000	000000	000000
				2"	H02					ASTM B187	8964K42	00000	00000	000000	000000	000000
				3"	H02					ASTM B187	8964K138	00000	000000	000000	000000	000000
				4"	H02					ASTM B187	8964K44	00000	000000	000000	000000	000000
				5"	H02					ASTM B187	8964K139	000000	000000	000000	000000	000000
				6"	H02					ASTM B187	8964K46	000000	000000	000000	000000	000000


				5/8" Thick (-0.005" to 0.005" Tolerance)



										5/8"	H02	ASTM B187	89275K71	00000	00000	00000	00000	000000


						1"				H02	ASTM B187	8964K48	00000	00000	00000	000000	000000
						1 1/2"	H02			ASTM B187	8964K51	00000	00000	000000	000000	000000
						2"	H02			ASTM B187	8964K53	00000	00000	000000	000000	000000
						4"	H02			ASTM B187	8964K55	000000	000000	000000	000000	000000


						3/4" Thick (-0.005" to 0.005" Tolerance)



										3/4"	H02	ASTM B187	89275K37	00000	00000	00000	000000	000000


										1 1/2"	H02	ASTM B187	8964K57	00000	00000	000000	000000	000000
										2"	H02	ASTM B187	8964K59	00000	000000	000000	000000	000000
										3"	H02	ASTM B187	8964K226	000000	000000	000000	000000	000000
										4"	H02	ASTM B187	8964K227	000000	000000	000000	000000	00000000


								7/8" Thick (-0.005" to 0.005" Tolerance)



										7/8"	H02	ASTM B187	89275K59	00000	00000	000000	000000	000000


										1"	H02	ASTM B187	8964K806	00000	00000	000000	000000	000000
2"										H02	ASTM B187	8964K807	000000	000000	000000	000000	000000
4"	H02									ASTM B187	8964K808	000000	000000	000000	000000	00000000


1" Thick (-0.005" to 0.005" Tolerance)



										1"	H02	ASTM B187	89275K38	00000	00000	000000	000000	000000


										2"	H02	ASTM B187	8964K809	000000	000000	000000	000000	000000
										3"	H02	ASTM B187	8964K62	000000	000000	000000	000000	00000000
										4"	H02	ASTM B187	8964K606	000000	000000	000000	000000	00000000


		1 1/4" Thick (-0.005" to 0.005" Tolerance)



										1 1/4"	H02	ASTM B187	89275K39	00000	000000	000000	000000	000000


										1 1/2" Thick (-0.005" to 0.005" Tolerance)



												1 1/2"	H02	ASTM B187	89275K41	000000	000000	000000	000000	000000


												3"	H02	ASTM B187	8964K607	000000	000000	000000	000000	00000000


				2" Thick (-0.005" to 0.005" Tolerance)



												2"	H02	ASTM B187	89275K42	000000	000000	000000	000000	00000000


												3"	H02	ASTM B187	8964K608	000000	000000	000000	00000000	00000000
												4"	H02	ASTM B187	8964K609	000000	000000	00000000	00000000	00000000


												2 1/2" Thick (-0.012" to 0.012" Tolerance)



						2 1/2"	H02							ASTM B187	89275K43	000000	000000	000000	00000000	00000000


						3" Thick (-0.012" to 0.012" Tolerance)



														3"	H02	ASTM B187	89275K44	000000	000000	00000000	00000000	00000000

Multipurpose 110 Copper Rods

The benchmark for conductivity in metals, 110 is the most commonly used copper alloy. You'll see it turned into everything from wire connectors to flashings to rivets.

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

Long Rods

Image of Product. Front orientation. Copper. Multipurpose 110 Copper Rods.

Dia.	Dia. Tolerance	Temper Designation	Specs. Met		1/2 ft. Long	1 ft. Long	2 ft. Long	3 ft. Long	6 ft. Long
1/8"	-0.002" to 0.002"	H04	ASTM B187	8966K71	00000	00000	00000	00000	000000
3/16"	-0.002" to 0.002"	H04	ASTM B187	8966K3	0000	0000	00000	00000	00000
1/4"	-0.002" to 0.002"	H04	ASTM B187	8966K4	0000	0000	00000	00000	00000
5/16"	-0.002" to 0.002"	H04	ASTM B187	8966K5	0000	00000	00000	00000	00000
3/8"	-0.002" to 0.002"	H04	ASTM B187	8966K12	0000	00000	00000	00000	00000
7/16"	-0.002" to 0.002"	H04	ASTM B187	8966K51	00000	00000	00000	00000	00000
1/2"	-0.002" to 0.002"	H04	ASTM B187	8966K13	00000	00000	00000	00000	00000
9/16"	-0.002" to 0.002"	H04	ASTM B187	8966K76	00000	00000	00000	00000	000000
5/8"	-0.002" to 0.002"	H04	ASTM B187	8966K14	00000	00000	00000	00000	000000
3/4"	-0.002" to 0.002"	H04	ASTM B187	8966K11	00000	00000	00000	000000	000000
13/16"	-0.002" to 0.002"	H04	ASTM B187	8966K77	00000	00000	000000	000000	000000
7/8"	-0.002" to 0.002"	H04	ASTM B187	8966K35	00000	00000	000000	000000	000000
1"	-0.002" to 0.002"	H04	ASTM B187	8966K36	00000	00000	000000	000000	000000
1 1/8"	-0.009" to 0.009"	H04	ASTM B187	8966K37	00000	00000	000000	000000	000000
1 1/4"	-0.009" to 0.009"	H04	ASTM B187	8966K15	00000	000000	000000	000000	000000
1 3/8"	-0.009" to 0.009"	H04	ASTM B187	8966K16	00000	000000	000000	000000	000000
1 1/2"	-0.009" to 0.009"	H04	ASTM B187	8966K17	00000	000000	000000	000000	000000
1 5/8"	-0.009" to 0.009"	H04	ASTM B187	8966K18	000000	000000	000000	000000	000000
1 3/4"	-0.009" to 0.009"	H04	ASTM B187	8966K19	000000	000000	000000	000000	000000
2"	-0.009" to 0.009"	H04	ASTM B187	8966K31	000000	000000	000000	000000	00000000
2 1/4"	-0.009" to 0.009"	H04	ASTM B187	8966K33	000000	000000	000000	000000	00000000
2 1/2"	-0.009" to 0.009"	H04	ASTM B187	8966K38	000000	000000	000000	000000	00000000
2 3/4"	-0.009" to 0.009"	H04	ASTM B187	8966K39	000000	000000	000000	00000000	00000000
3"	-0.009" to 0.009"	H04	ASTM B187	8966K46	000000	000000	000000	00000000	00000000
3 1/2"	-0.009" to 0.009"	H04	ASTM B187	8966K79	000000	000000	00000000	00000000	00000000
4"	-0.009" to 0.009"	H04	ASTM B187	8966K81	000000	000000	00000000	00000000	00000000
5"	-0.009" to 0.009"	H04	ASTM B187	8966K82	000000	00000000	00000000	—	—
6"	-0.009" to 0.009"	M30	ASTM B187	8966K83	00000000	00000000	00000000	—	—

Short Rods and Discs

Dia.	Dia. Tolerance	Temper Designation	Specs. Met		1/2" Long	1" Long	2" Long	3" Long	4" Long
1"	-0.002" to 0.002"	H04	ASTM B187	9103K8	00000	000000	000000	000000	000000
1 1/2"	-0.009" to 0.009"	H04	ASTM B187	9103K9	00000	00000	00000	00000	00000
2"	-0.009" to 0.009"	H04	ASTM B187	9103K2	00000	00000	00000	000000	000000
2 1/2"	-0.009" to 0.009"	H04	ASTM B187	9103K4	00000	00000	00000	000000	000000
3"	-0.009" to 0.009"	H04	ASTM B187	9103K3	00000	00000	000000	000000	000000
4"	-0.009" to 0.009"	H04	ASTM B187	9103K5	00000	000000	000000	000000	000000
5"	-0.009" to 0.009"	H04	ASTM B187	9103K6	00000	000000	000000	000000	000000
6"	-0.009" to 0.009"	M30	ASTM B187	9103K7	000000	000000	000000	000000	000000

Ultra-Conductive 101 Copper Rods

The purest, most conductive copper we offer, with at least 99.95% copper content. Since there’s virtually no oxygen to outgas, it won’t break high-vacuum systems. It also won’t contaminate clean rooms, such as in semiconductor manufacturing.

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

Long Rods

Image of Product. Front orientation. Copper. Ultra-Conductive 101 Copper Rods.

Dia.	Dia. Tolerance	Temper Designation	Specs. Met		1/2 ft. Long	1 ft. Long	2 ft. Long	3 ft. Long	6 ft. Long
1/8"	-0.002" to 0.002"	H04	ASTM B187	8965K35	00000	00000	00000	00000	000000
5/32"	-0.003" to 0.003"	H04	ASTM B187	8965K36	0000	0000	00000	00000	00000
3/16"	-0.004" to 0.004"	H04	ASTM B187	8965K11	0000	0000	00000	00000	00000
1/4"	-0.004" to 0.004"	H04	ASTM B187	8965K12	0000	00000	00000	00000	00000
5/16"	-0.004" to 0.004"	H04	ASTM B187	8965K13	00000	00000	00000	00000	00000
3/8"	-0.004" to 0.004"	H04	ASTM B187	8965K14	00000	00000	00000	00000	00000
7/16"	-0.004" to 0.004"	H04	ASTM B187	8965K15	00000	00000	00000	00000	000000
1/2"	-0.004" to 0.004"	H04	ASTM B187	8965K82	00000	00000	00000	00000	000000
9/16"	-0.004" to 0.004"	H04	ASTM B187	8965K38	00000	00000	00000	000000	000000
5/8"	-0.004" to 0.004"	H04	ASTM B187	8965K71	00000	00000	00000	00000	000000
11/16"	-0.004" to 0.004"	H04	ASTM B187	8965K39	00000	00000	000000	000000	000000
3/4"	-0.004" to 0.004"	H04	ASTM B187	8965K72	00000	00000	000000	000000	000000
7/8"	-0.004" to 0.004"	H04	ASTM B187	8965K68	00000	00000	000000	000000	000000
1"	-0.004" to 0.004"	H04	ASTM B187	8965K73	00000	00000	000000	000000	000000
1 1/8"	-0.004" to 0.004"	H04	ASTM B187	8965K45	000000	000000	000000	000000	000000
1 1/4"	-0.004" to 0.004"	H04	ASTM B187	8965K74	000000	000000	000000	000000	000000
1 1/2"	-0.004" to 0.004"	H04	ASTM B187	8965K75	000000	000000	000000	000000	000000
2"	-0.005" to 0.005"	H04	ASTM B187	8965K76	—	000000	000000	000000	00000000
2 1/2"	-0.006" to 0.006"	H04	ASTM B187	8965K49	000000	000000	00000000	00000000	00000000
3"	-0.008" to 0.008"	H04	ASTM B187	8965K57	—	000000	00000000	00000000	00000000

Short Rods and Discs

Dia.	Dia. Tolerance	Temper Designation	Specs. Met		3" Long	4" Long	5" Long	6" Long
2"	-0.008" to 0.008"	H04	ASTM B187, ASTM F68	8312K72	0000000	0000000	0000000	0000000
3"	-0.008" to 0.008"	H04	ASTM B187, ASTM F68	8312K73	000000	000000	000000	000000
4"	-0.008" to 0.008"	H04	ASTM B187, ASTM F68	8312K74	000000	000000	000000	000000
5"	-0.01" to 0.01"	H04	ASTM B187, ASTM F68	8312K75	000000	000000	000000	000000
6"	-0.063" to 0.063"	Not Rated	ASTM B187, ASTM F68	8312K76	000000	000000	000000	00000000

Ultra-Conductive 101 Copper Bars

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

	Wd.	Temper Designation	Specs. Met		1 ft. Long	2 ft. Long	4 ft. Long
1/8" Thick (-0.004" to 0.004" Tolerance)



		1"	H02	ASTM B187	3350K205	000000	000000	000000


		2"	H02	ASTM B187	3350K206	00000	00000	000000
		4"	H02	ASTM B187	3350K207	00000	000000	000000
		6"	H02	ASTM B187	3350K208	000000	000000	000000


		1/4" Thick (-0.005" to 0.005" Tolerance)



				1/4"	H02	ASTM B187	3350K209	00000	00000	00000


				1/2"	H02	ASTM B187	3350K211	00000	00000	000000
				1"	H02	ASTM B187	3350K212	00000	00000	000000
				2"	H02	ASTM B187	3350K213	000000	000000	000000
				4"	H02	ASTM B187	3350K214	000000	000000	000000
				6"	H02	ASTM B187	3350K215	000000	000000	000000


				3/8" Thick (-0.005" to 0.005" Tolerance)



						3/8"	H02	ASTM B187	3350K216	00000	00000	000000


						1"	H02	ASTM B187	3350K217	00000	000000	000000
						2"	H02	ASTM B187	3350K218	000000	000000	000000
						4"	H02	ASTM B187	3350K219	000000	000000	000000


						1/2" Thick (-0.005" to 0.005" Tolerance)



								1/2"	H02	ASTM B187	3350K221	00000	000000	000000


								1"	H02	ASTM B187	3350K222	00000	000000	000000
								2"	H02	ASTM B187	3350K223	000000	000000	000000
								4"	H02	ASTM B187	3350K224	000000	000000	000000


								3/4" Thick (-0.007" to 0.007" Tolerance)



										3/4"	H02	ASTM B187	3350K225	000000	000000	000000


										1"	H02	ASTM B187	3350K226	000000	000000	000000
										2"	H02	ASTM B187	3350K227	000000	000000	000000
										4"	H02	ASTM B187	3350K228	000000	000000	00000000


										1" Thick (-0.008" to 0.008" Tolerance)



1"	H02											ASTM B187	3350K229	000000	000000	000000


2"	H02											ASTM B187	3350K231	000000	000000	000000
4"	H02											ASTM B187	3350K232	000000	000000	00000000

Multipurpose 110 Copper Bars with Rounded Edges

Rounded edges on these bars deliver current more reliably than square ones, making them a top choice for bus bars. They’re made of 110 copper, the benchmark for electrical conductivity in metals. 110 is soft enough to form, so you can bend and shape these bars to fit inside control panels and transformers.

Silver Plated—A layer of silver boosts conductivity, slows tarnishing, and reduces electrical resistance where the copper makes contact with another surface.

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

	Wd.	Temper Designation	Specs. Met		1 ft. Long	3 ft. Long	6 ft. Long
110 Copper







				1/8" Thick (-0.004" to 0.004" Tolerance)

				3/4"	H02	ASTM B187	2557T51	000000	000000	000000


				1"	H02	ASTM B187	2557T52	00000	00000	00000
				1 1/2"	H02	ASTM B187	2557T53	00000	00000	000000
				2"	H02	ASTM B187	2557T54	00000	00000	000000
				3"	H02	ASTM B187	2557T55	00000	000000	000000
				4"	H02	ASTM B187	2557T56	00000	000000	000000




						3/16" Thick (-0.004" to 0.004" Tolerance)

						3/4"	H02	ASTM B187	2557T57	00000	00000	00000


						1"	H02	ASTM B187	2557T58	00000	00000	000000
						1 1/2"	H02	ASTM B187	2557T59	00000	00000	000000
						2"	H02	ASTM B187	2557T61	00000	000000	000000




								1/4" Thick (-0.004" to 0.004" Tolerance)

								3/4"	H02	ASTM B187	2557T62	00000	00000	00000


								1"	H02	ASTM B187	2557T63	00000	00000	000000
								1 1/2"	H02	ASTM B187	2557T64	00000	000000	000000
								2"	H02	ASTM B187	2557T65	00000	000000	000000
								3"	H02	ASTM B187	2557T66	00000	000000	000000
								4"	H02	ASTM B187	2557T67	00000	000000	000000




										3/8" Thick (-0.004" to 0.004" Tolerance)

										1"	H02	ASTM B187	2557T68	00000	00000	000000


										1 1/2"	H02	ASTM B187	2557T69	00000	000000	000000
										2"	H02	ASTM B187	2557T71	00000	000000	000000
										3"	H02	ASTM B187	2557T72	000000	000000	000000


										Silver-Plated 110 Copper







	1/4" Thick (-0.004" to 0.004" Tolerance)

	1"												H02	ASTM B187	88865K621	00000	00000	000000


	1 3/8"	H02											ASTM B187	88865K622	00000	000000	000000
	1 1/2"	H02	ASTM B187										88865K623	00000	000000	000000
	1 3/4"	H02	ASTM B187										88865K624	00000	000000	000000
	2"	H02	ASTM B187										88865K625	00000	000000	000000
	2 1/2"	H02	ASTM B187										88865K611	00000	000000	000000
	3"	H02	ASTM B187										88865K633	00000	000000	000000
	4"	H02	ASTM B187										88865K655	00000	000000	000000
	6"	H02	ASTM B187										88865K699	000000	000000	000000