T351 Temper Aluminum | McMaster-Carr

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T351

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	Shape Shape


Sheet and Bar	Rod and Disc

Hex Bar

	System of Measurement System of Measurement

Inch

	Thickness Thickness

	Width Width

	Diameter Diameter

	Material Material

Aluminum

	Tolerance Rating Tolerance Rating

Standard

Tight

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Specifications Met Specifications Met

ASTM

SAE

	Aluminum Performance Properties Aluminum Performance Properties

Easy to Machine

	Hardness Rating Hardness Rating

Medium

	Hardness Hardness

Brinell 120

	Appearance Appearance

	Plain

	Yield Strength Yield Strength

40,000 psi or greater

	Fabrication Fabrication

Cold Rolled

Cold Drawn

Hot Rolled

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

250° to 349° F

	Minimum Temperature Minimum Temperature

-399° to -320° F

	Heat Treatment Heat Treatment

Hardened

	Heat Treatable Heat Treatable

Yes

	Elongation Elongation

15%

	Length Length

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About Aluminum

While 2024 aluminum was initially designed for structural components in aircraft, it's now widely used when a high strength-to-weight ratio is needed, such as for gears, shafts, and fasteners. It offers similar performance to 7075 aluminum, but it’s not as strong.

Cold-rolled sheets are cut from large pieces to the widths and lengths listed, so the edges may not be parallel.

Cold-drawn bars are formed by a die for close-tolerance widths, then cut to the lengths listed.

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 ACTIVITY after your order ships.

Sheets

Yield Strength: 41,000 psi
Hardness: Brinell 120 (Medium)
Temper:
0.020" to 0.190" thick. sheets: T3
All other sizes: T351
Fabrication: Cold Rolled
Specifications Met: ASTM B209

6" × 6"
Thick.	Thick. Tolerance	Heat Treatment	Temperature Range, °F		Each
1/4"	-0.014" to 0.014"	Hardened	-320° to 300°	00000000	000000
3/8"	-0.017" to 0.017"	Hardened	-320° to 300°	00000000	00000
1/2"	-0.023" to 0.023"	Hardened	-320° to 300°	00000000	00000
3/4"	-0.031" to 0.031"	Hardened	-320° to 300°	00000000	00000
1"	-0.039" to 0.039"	Hardened	-320° to 300°	00000000	00000
1 1/4"	-0.039" to 0.039"	Hardened	-320° to 300°	00000000	000000
1 1/2"	-0.039" to 0.039"	Hardened	-320° to 300°	00000000	000000
8" × 8"
1/4"	-0.014" to 0.014"	Hardened	-320° to 300°	0000000	00000
3/8"	-0.017" to 0.017"	Hardened	-320° to 300°	0000000	00000
1/2"	-0.023" to 0.023"	Hardened	-320° to 300°	0000000	00000
3/4"	-0.031" to 0.031"	Hardened	-320° to 300°	0000000	000000
1"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
1 1/4"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
1 1/2"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
12" × 12"
1/4"	-0.014" to 0.014"	Hardened	-320° to 300°	0000000	00000
3/8"	-0.017" to 0.017"	Hardened	-320° to 300°	0000000	000000
1/2"	-0.023" to 0.023"	Hardened	-320° to 300°	0000000	000000
3/4"	-0.031" to 0.031"	Hardened	-320° to 300°	0000000	000000
1"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
1 1/4"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
1 1/2"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
12" × 24"
1/4"	-0.014" to 0.014"	Hardened	-320° to 300°	00000000	000000
3/8"	-0.017" to 0.017"	Hardened	-320° to 300°	00000000	000000
1/2"	-0.023" to 0.023"	Hardened	-320° to 300°	00000000	000000
3/4"	-0.031" to 0.031"	Hardened	-320° to 300°	00000000	000000
1"	-0.039" to 0.039"	Hardened	-320° to 300°	00000000	000000
1 1/4"	-0.039" to 0.039"	Hardened	-320° to 300°	00000000	000000
1 1/2"	-0.039" to 0.039"	Hardened	-320° to 300°	00000000	000000
18" × 18"
1/4"	-0.014" to 0.014"	Hardened	-320° to 300°	0000000	000000
3/8"	-0.017" to 0.017"	Hardened	-320° to 300°	0000000	000000
1/2"	-0.023" to 0.023"	Hardened	-320° to 300°	0000000	000000
3/4"	-0.031" to 0.031"	Hardened	-320° to 300°	0000000	000000
1"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
1 1/4"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
1 1/2"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
24" × 24"
1/4"	-0.014" to 0.014"	Hardened	-320° to 300°	0000000	000000
3/8"	-0.017" to 0.017"	Hardened	-320° to 300°	0000000	000000
1/2"	-0.023" to 0.023"	Hardened	-320° to 300°	0000000	000000
3/4"	-0.031" to 0.031"	Hardened	-320° to 300°	0000000	000000
1"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	000000
1 1/4"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	00000000
1 1/2"	-0.039" to 0.039"	Hardened	-320° to 300°	0000000	00000000

Bars

Yield Strength: 47,000 psi
Hardness: Brinell 120 (Medium)
Fabrication: Cold Drawn
Temper:
1/8" to 3/8" thick. bars: T4
All other sizes: T351
Specifications Met: ASTM B211

1/2" Thick. (-0.002" to 0.002" Tolerance)
Wd.	Heat Treatment	Temperature Range, °F		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/2"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	000000
3/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	00000
1"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	00000
1 1/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
1 1/2"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
1 3/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
2"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
2 1/2"	Hardened	-320° to 300°	000000000	00000	00000	00000	000000	000000
3"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
6"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
5/8" Thick. (-0.003" to 0.003" Tolerance)
5/8"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	00000
3/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	00000
1"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
1 1/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
1 1/2"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
2"	Hardened	-320° to 300°	000000000	00000	00000	00000	000000	000000
3/4" Thick. (-0.003" to 0.003" Tolerance)
3/4"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	000000
1"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
1 1/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	00000	000000
1 1/2"	Hardened	-320° to 300°	000000000	00000	00000	00000	000000	000000
1 3/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	000000	000000
2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
2 1/2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
3"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
3 1/2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
6"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
1" Thick. (-0.003" to 0.003" Tolerance)
1"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	000000
1 1/2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
1 3/4"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
2 1/2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
3"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
3 1/2"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
5"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
6"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
1" Thick. (-0.0025" to 0.0025" Tolerance)
1 1/4"	Hardened	-320° to 300°	000000000	00000	00000	00000	000000	000000
1 1/8" Thick. (-0.003" to 0.003" Tolerance)
1 1/8"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	000000
1 1/4" Thick. (-0.003" to 0.003" Tolerance)
1 1/4"	Hardened	-320° to 300°	00000000	00000	00000	00000	000000	000000
1 1/2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
2 1/2"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
3"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
1 1/2" Thick. (-0.003" to 0.003" Tolerance)
1 1/2"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2"	Hardened	-320° to 300°	000000000	00000	00000	000000	000000	000000
2 1/2"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
3"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
6"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
1 3/4" Thick. (-0.005" to 0.005" Tolerance)
1 3/4"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2"	Hardened	-320° to 300°	000000000	00000	000000	000000	000000	000000
3"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
2" Thick. (-0.005" to 0.005" Tolerance)
2"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2 1/2"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
3"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
6"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	00000000
2 1/4" Thick. (-0.008" to 0.008" Tolerance)
2 1/4"	Hardened	-320° to 300°	00000000	00000	000000	000000	000000	000000
2 1/2" Thick. (-0.008" to 0.008" Tolerance)
2 1/2"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	000000
3"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	00000000
6"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	00000000
3" Thick. (-0.008" to 0.008" Tolerance)
3"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	000000
4"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	00000000
6"	Hardened	-320° to 300°	000000000	000000	000000	000000	000000	00000000
3 1/2" Thick. (-0.01" to 0.01" Tolerance)
3 1/2"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	000000
4" Thick. (-0.01" to 0.01" Tolerance)
4"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	00000000

Tight-Tolerance High-Strength 2024 Aluminum Sheets and Bars

Yield Strength: 47,000 psi
Hardness: Brinell 120 (Medium)
Temper: T351
Fabrication: Hot Rolled
Specifications Met: ASTM B209, SAE AMS-QQ-A-250/4, SAE AMS4035

Also known as flat stock, these sheets and bars are precision ground on the top and bottom. The sides have a cut or milled edge. While 2024 aluminum was initially designed for structural components in aircraft, it's now widely used when a high strength-to-weight ratio is needed, such as for gears, shafts, and fasteners. It offers similar performance to 7075 aluminum, but it’s not as strong.

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 ACTIVITY after your order ships.

Thick.	Thick. Tolerance	Heat Treatment	Temperature Range, °F	Flatness Tolerance		2" × 12"	4" × 12"	6” × 6”	8" × 8"	12” × 12”	12” × 24”	18" × 18"	24” × 24”
1/4"	-0.002" to 0.002"	Hardened	-320° to 300°	0.010"	0000000	000000	000000	000000	000000	0000000	0000000	0000000	0000000
3/8"	-0.002" to 0.002"	Hardened	-320° to 300°	0.010"	0000000	00000	000000	000000	000000	000000	000000	000000	000000
1/2"	-0.002" to 0.002"	Hardened	-320° to 300°	0.005"	0000000	000000	000000	000000	000000	000000	000000	000000	000000
5/8"	-0.002" to 0.002"	Hardened	-320° to 300°	0.005"	0000000	000000	000000	000000	000000	000000	000000	000000	000000
3/4"	-0.002" to 0.002"	Hardened	-320° to 300°	0.005"	0000000	000000	000000	000000	000000	000000	000000	000000	000000
1"	-0.002" to 0.002"	Hardened	-320° to 300°	0.005"	0000000	000000	000000	000000	000000	000000	000000	000000	00000000

High-Strength 2024 Aluminum Rods and Discs

Yield Strength: 45,000 psi
Hardness: Brinell 120 (Medium)
Temper:
3/16" to 3/8" dia.: T4
All other sizes: T351
Fabrication: Cold Drawn
Specifications Met: ASTM B211, SAE AMS-QQ-A-225/6, SAE AMS4120

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 ACTIVITY after your order ships.

Dia.	Dia. Tolerance	Heat Treatment	Temperature Range, °F		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
5/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	0000	0000	00000	00000	00000
3/4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	0000	0000	00000	00000	00000
7/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	0000	0000	00000	00000	00000
1"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	0000	00000	00000	00000	00000
1 1/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	00000
1 1/4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	00000
1 3/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	000000
1 1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	000000
1 5/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	00000	00000	000000
1 3/4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	00000	000000	000000
1 7/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	00000	000000	000000
2"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2 1/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2 1/4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2 3/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2 1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2 5/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
2 3/4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	000000	000000	000000	000000
2 7/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	00000	000000	000000	000000
3"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	000000	000000	000000	000000
3 1/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	000000	000000	000000	000000
3 1/4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	000000	000000	000000	000000
3 3/8"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	000000	000000	000000	000000
3 1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	00000	000000	000000	000000	000000
3 3/4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	000000
4"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	000000
4 1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	000000
5"	-0.012" to 0.012"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	00
5 1/2"	-0.020" to 0.020"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	00
6"	-0.020" to 0.020"	Hardened	-320° to 300°	00000000	000000	000000	000000	000000	00

Dia.	Dia. Tolerance	Heat Treatment	Temperature Range, °F		1/2" Lg.	3/4" Lg.	1" Lg.	3" Lg.
2"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	00000	00000	00000	000000
2 1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	0000	0000	00000	00000
3"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	00000	00000	00000	00000
3 1/4"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	00000	00000	00000	00000
3 1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	00000	00000	00000	00000
4"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	00000	00000	00000	00000
4 1/2"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	00000	00000	00000	00000
5"	-0.012" to 0.012"	Hardened	-320° to 300°	0000000	00000	00000	00000	00000
5 1/2"	-0.020" to 0.020"	Hardened	-320° to 300°	0000000	00000	00000	00000	000000
6"	-0.020" to 0.020"	Hardened	-320° to 300°	0000000	00000	00000	00000	000000

High-Strength 2024 Aluminum Hex Bars

Yield Strength: 47,000 psi
Hardness: Brinell 120 (Medium)
Temper:
1/4" wd.: T4
All other sizes: T351
Fabrication: Cold Drawn
Specifications Met: ASTM B211

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 ACTIVITY after your order ships.

Wd.	Wd. Tolerance	Heat Treatment	Temperature Range, °F		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/2"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	000000	000000	000000
3/4"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	00000	00000	00000
7/8"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	00000	00000	00000
1"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	00000	00000	000000
1 1/8"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	00000	00000	000000
1 1/4"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	00000	00000	000000
1 1/2"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	00000	000000	000000
2"	-0.005" to 0.005"	Hardened	-320° to 300°	00000000	00000	000000	000000