ASTM B21 Brass | McMaster-Carr

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Specifications Met

ASTM Standard

ASTM B21

System of Measurement

Diameter

Shape

Length

Material

Width

Thickness

Temper Rating

Hardness

Certificate Type

Material Certificate with Traceable Lot Number

Hardness Rating

Tolerance Rating

Temper Designation

Yield Strength

20,000 psi to 29,999 psi

Appearance

Density

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

EAR99

Modulus of Elasticity

15,000 ksi

DFARS Specialty Metals

Exempt

Melting Point Temperature

1,630° F

Surface Resistivity

39.9 cir. mil·ohm/ft

Thermal Conductivity @ Temperature

67 BTU/(hr⋅ft⋅°F) @ 68° F

Fabrication

Cold Worked

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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.

Weldable Marine-Grade 464 Brass Sheets and Bars

A lead-free alternative to 485 brass, 464 brass offers good weldability, strength, and wear resistance. It’s widely used for marine hardware, pump and propeller shafts, and rivets.

For technical drawings and 3-D models, click on a part number.

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

Bars

Yield Strength: 22,000 psi
Hardness: Rockwell B55 (Soft)
Temper: H02 (1/2 Hard)
Heat Treatable: No
Specifications Met: ASTM B21

1/4" Thick. (-0.005" to 0.005" Tolerance)
Wd.	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1"	1/2" per 10 ft.	0000000	000000	000000	0000000
1 1/2"	1/2" per 10 ft.	0000000	00000	00000	000000
3/8" Thick. (-0.005" to 0.005" Tolerance)
4"	1/2" per 10 ft.	0000000	000000	000000	000000
1/2" Thick. (-0.005" to 0.005" Tolerance)
1/2"	1/2" per 10 ft.	0000000	00000	00000	000000
1"	1/2" per 10 ft.	0000000	00000	000000	000000
1 1/2"	1/2" per 10 ft.	0000000	00000	000000	000000
2"	1/2" per 10 ft.	0000000	00000	000000	000000
2 1/2"	1/2" per 10 ft.	0000000	000000	000000	000000
3"	1/2" per 10 ft.	0000000	000000	000000	000000
5/8" Thick. (-0.006" to 0.006" Tolerance)
5/8"	1/2" per 10 ft.	0000000	00000	00000	000000
3/4" Thick. (-0.006" to 0.006" Tolerance)
3/4"	1/2" per 10 ft.	0000000	00000	000000	000000
1"	1/2" per 10 ft.	0000000	00000	000000	000000
1 1/2"	1/2" per 10 ft.	0000000	000000	000000	000000
3"	1/2" per 10 ft.	0000000	000000	000000	000000
1" Thick. (-0.006" to 0.006" Tolerance)
1"	1/2" per 10 ft.	0000000	00000	000000	000000
1 1/4"	1/2" per 10 ft.	0000000	000000	000000	000000
1 1/2"	1/2" per 10 ft.	0000000	000000	000000	000000
2"	1/2" per 10 ft.	0000000	000000	000000	000000
3"	1/2" per 10 ft.	0000000	000000	000000	000000
1 1/2" Thick. (-0.007" to 0.007" Tolerance)
1 1/2"	1/2" per 10 ft.	0000000	000000	000000	000000
2" Thick. (-0.007" to 0.007" Tolerance)
2"	1/2" per 10 ft.	0000000	000000	000000	00000000

Weldable Marine-Grade 464 Brass Rods

Yield Strength: 22,000 psi
Hardness: Rockwell B55 (Soft)
Temper: H02 (1/2 Hard)
Heat Treatable: No
Specifications Met: ASTM B21

A lead-free alternative to 485 brass, 464 brass offers good weldability, strength, and wear resistance. It’s widely used for marine hardware, pump and propeller shafts, and rivets.

For technical drawings and 3-D models, click on a part number.

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

Dia.	Dia. Tolerance Range	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3/16"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	000000	000000
1/4"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	0000	00000	00000
5/16"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	00000	00000
3/8"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	00000	00000
7/16"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	00000	00000
1/2"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	00000	00000
9/16"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	00000	00000
5/8"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	00000	000000
3/4"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	00000	000000
7/8"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	000000	000000
1"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	000000	000000
1 1/4"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	00000	000000	000000
1 1/2"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	000000	000000	000000
2"	-0.003" to 0.003"	1/2" per 10 ft.	0000000	000000	000000	000000

Marine-Grade 485 Brass

Yield Strength: 25,000 psi
Hardness:
3/16" to 3/8" dia. rods: Not Rated
All other sizes: Rockwell B60 (Soft)
Temper:
3" dia. rods: M30
All other sizes: H02 (1/2 Hard)
Heat Treatable: No
Specifications Met: ASTM B21

Also known as high-leaded naval brass, 485 brass contains lead for good machinability. It is commonly used for marine hardware, valve stems, and screw machine products.

For technical drawings and 3-D models, click on a part number.

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

Dia.	Dia. Tolerance Range		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
3/16"	-0.002" to 0.002"	0000000	00000	000000	000000
5/16"	-0.002" to 0.002"	0000000	0000	00000	00000
3/8"	-0.002" to 0.002"	0000000	00000	00000	00000
1/2"	-0.002" to 0.002"	0000000	00000	00000	00000
5/8"	-0.002" to 0.002"	0000000	00000	00000	000000
3/4"	-0.002" to 0.002"	0000000	00000	00000	000000
7/8"	-0.002" to 0.002"	0000000	00000	000000	000000
1"	-0.002" to 0.002"	0000000	00000	000000	000000
1 1/8"	-0.003" to 0.003"	0000000	00000	000000	000000
1 1/4"	-0.003" to 0.003"	0000000	00000	000000	000000
1 3/8"	-0.003" to 0.003"	0000000	000000	000000	000000
1 1/2"	-0.003" to 0.003"	0000000	000000	000000	000000
1 3/4"	-0.003" to 0.003"	0000000	000000	000000	000000
2"	-0.003" to 0.003"	0000000	000000	000000	000000
3"	-0.005" to 0.005"	0000000	000000	00000000	00000000