ASTM B21 Brass | McMaster-Carr

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20,000 psi to 29,999 psi

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

Modulus of Elasticity

15,000 ksi

Conductivity Percentage

26% IACS

Surface Resistivity

39.9 cir. mil·ohm/ft

Thermal Conductivity @ Temperature

67 BTU/(hr⋅ft⋅°F) @ 68° F

Export Control Classification Number (ECCN)

EAR99

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49 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

Machinable

Smooth, accurate results possible with the right tools and techniques

35 products

Highly Machinable

Machinable enough to run automated jobs with minimal downtime

14 products

Performance

Weldable

Join metal pieces by melting them together at the seam

35 products

Wear Resistant

Hardness of Rockwell B60 or greater

12 products

Marine-Grade 464 Brass Bars

From pump and propeller shafts to marine hardware and rivets, use 464 brass for parts that last in salt water. It combines corrosion resistance, strength, and weldability. Developed as a lead-free alternative to 485 brass, it's also easy to machine because it contains zinc.

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



		1"	H02	ASTM B21	8949K41	000000	000000	0000000


		1 1/2"	H02	ASTM B21	8949K42	00000	000000	000000


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



				4"	H02	ASTM B21	8949K11	000000	000000	000000


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



						1/2"	H02	ASTM B21	8972K21	00000	00000	000000


						1"	H02	ASTM B21	8949K13	00000	000000	000000
						1 1/2"	H02	ASTM B21	8949K15	00000	000000	000000
						2"	H02	ASTM B21	8949K17	000000	000000	000000
						2 1/2"	H02	ASTM B21	8949K19	000000	000000	000000
						3"	H02	ASTM B21	8949K22	000000	000000	000000


						5/8" Thick (-0.006" to 0.006" Tolerance)



								5/8"	H02	ASTM B21	8972K22	00000	000000	000000


								3/4" Thick (-0.006" to 0.006" Tolerance)



										3/4"	H02	ASTM B21	8972K38	00000	000000	000000


										1"	H02	ASTM B21	8949K24	00000	000000	000000
										1 1/2"	H02	ASTM B21	8949K26	000000	000000	000000
										3"	H02	ASTM B21	8949K28	000000	000000	000000


										1" Thick (-0.006" to 0.006" Tolerance)



												1"	H02	ASTM B21	8972K41	000000	000000	000000


												1 1/4"	H02	ASTM B21	8949K31	000000	000000	000000
												1 1/2"	H02	ASTM B21	8949K33	000000	000000	000000
												2"	H02	ASTM B21	8949K35	000000	000000	000000
												3"	H02	ASTM B21	8949K37	000000	000000	00000000


												1 1/2" Thick (-0.007" to 0.007" Tolerance)



	1 1/2"												H02	ASTM B21	8972K43	000000	000000	000000


	2" Thick (-0.007" to 0.007" Tolerance)



														2"	H02	ASTM B21	8972K45	000000	000000	00000000

Marine-Grade 464 Brass Rods

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

Dia.	Dia. Tolerance	Temper Designation	Specs. Met		1 ft. Long	3 ft. Long	6 ft. Long
3/16"	-0.003" to 0.003"	H02	ASTM B21	8970K51	00000	000000	000000
1/4"	-0.003" to 0.003"	H02	ASTM B21	8970K52	00000	00000	00000
5/16"	-0.003" to 0.003"	H02	ASTM B21	8970K53	00000	00000	00000
3/8"	-0.003" to 0.003"	H02	ASTM B21	8970K54	00000	00000	00000
7/16"	-0.003" to 0.003"	H02	ASTM B21	8970K55	00000	00000	000000
1/2"	-0.003" to 0.003"	H02	ASTM B21	8970K56	00000	00000	000000
9/16"	-0.003" to 0.003"	H02	ASTM B21	8970K57	00000	00000	000000
5/8"	-0.003" to 0.003"	H02	ASTM B21	8970K58	00000	00000	000000
3/4"	-0.003" to 0.003"	H02	ASTM B21	8970K59	00000	000000	000000
7/8"	-0.003" to 0.003"	H02	ASTM B21	8970K75	00000	000000	000000
1"	-0.003" to 0.003"	H02	ASTM B21	8970K78	000000	000000	000000
1 1/4"	-0.003" to 0.003"	H02	ASTM B21	8970K81	00000	000000	000000
1 1/2"	-0.003" to 0.003"	H02	ASTM B21	8970K83	000000	000000	000000
2"	-0.003" to 0.003"	H02	ASTM B21	8970K85	000000	000000	000000

Highly Machinable Marine-Grade 485 Brass Rods

The best marine-grade brass to drill, mill, and turn. Also called high-leaded naval brass, 485 contains lead for better machinability than 464 brass without losing strength or corrosion resistance. It's a top choice for threaded marine hardware, such as valve stems.

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

Dia.	Dia. Tolerance	Temper Designation	Specs. Met		1 ft. Long	3 ft. Long	6 ft. Long
5/16"	-0.002" to 0.002"	H02	ASTM B21	9105K21	00000	000000	000000
3/8"	-0.002" to 0.002"	H02	ASTM B21	9105K13	0000	00000	00000
1/2"	-0.002" to 0.002"	H02	ASTM B21	9105K23	00000	00000	00000
5/8"	-0.002" to 0.002"	H02	ASTM B21	9105K24	00000	00000	00000
3/4"	-0.002" to 0.002"	H02	ASTM B21	9105K25	00000	00000	000000
7/8"	-0.002" to 0.002"	H02	ASTM B21	9105K26	00000	000000	000000
1"	-0.002" to 0.002"	H02	ASTM B21	9105K27	00000	000000	000000
1 1/8"	-0.003" to 0.003"	H02	ASTM B21	9105K42	00000	000000	000000
1 1/4"	-0.003" to 0.003"	H02	ASTM B21	9105K28	00000	000000	000000
1 3/8"	-0.003" to 0.003"	H02	ASTM B21	9105K43	00000	000000	000000
1 1/2"	-0.003" to 0.003"	H02	ASTM B21	9105K29	000000	000000	000000
1 3/4"	-0.003" to 0.003"	H02	ASTM B21	9105K31	000000	000000	000000
2"	-0.003" to 0.003"	H02	ASTM B21	9105K32	000000	000000	000000
3"	-0.005" to 0.005"	M30	ASTM B21	9105K33	000000	00000000	00000000