Nickel-Iron Alloys | McMaster-Carr

	Thickness Thickness

	Diameter Diameter

	Length Length

	Width Width

12"

15"

	Shape Shape

	Sheet and Bar
	Rod and Disc

	Material Material

AD-MU-80 Nickel

Invar 36 Nickel

Kovar Nickel

	Temper Rating Temper Rating

Softened (Annealed)

1/4 Hard

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Hardness Rating Hardness Rating

Medium

Hard

Not Rated

	Yield Strength Yield Strength

	Backing Type Backing Type


Plain	Adhesive

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Specifications Met Specifications Met

ASTM A753

ASTM F1684

ASTM F15

	Hardness Hardness

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Material Thickness Material Thickness

45 Products

EMI-Shielding Nickel Alloy

Yield Strength: 35,000 psi
Hardness: Not Rated
Temper Rating: Softened (Annealed)

Use this nickel-iron-cobalt alloy as a magnetic shield to protect electronic equipment from EMI/RFI interference.

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

Plain Back

Plain Back
Thick.	Thick. Tolerance	Wd.	Lengths, ft.	Specifications Met		Per Ft.
0.002"	-0.0002" to 0.0002"	4"	1, 2, 3, 4, 5	ASTM A753	0000000	000000
0.004"	-0.0004" to 0.0004"	4"	1, 2, 3, 4, 5	ASTM A753	0000000	00000
0.004"	-0.0004" to 0.0004"	15"	1, 2, 3, 4, 5	ASTM A753	0000000	00000
0.006"	-0.0006" to 0.0006"	4"	1, 2, 3, 4, 5	ASTM A753	0000000	00000
0.006"	-0.0006" to 0.0006"	15"	1, 2, 3, 4, 5	ASTM A753	0000000	000000
0.01"	-0.001" to 0.001"	4"	1, 2, 3, 4, 5	ASTM A753	0000000	00000
0.01"	-0.001" to 0.001"	15"	1, 2, 3, 4, 5	ASTM A753	0000000	000000

Adhesive Back

Adhesive Back
Thick.	Thick. Tolerance	Material Thickness	Adhesive Thickness	Wd.	Lengths, ft.	Adhesive Type	Specifications Met		Per Ft.
0.0043"	-0.0002" to 0.0002"	0.002"	0.0023"	4"	1, 2, 3, 4, 5	Rubber	ASTM A753	0000000	000000
0.0063"	-0.0004" to 0.0004"	0.004"	0.0023"	4"	1, 2, 3, 4, 5	Rubber	ASTM A753	0000000	00000
0.0063"	-0.0004" to 0.0004"	0.004"	0.0023"	15"	1, 2, 3, 4, 5	Rubber	ASTM A753	0000000	000000
0.0083"	-0.0006" to 0.0006"	0.006"	0.0023"	4"	1, 2, 3, 4, 5	Rubber	ASTM A753	0000000	00000
0.0083"	-0.0006" to 0.0006"	0.006"	0.0023"	15"	1, 2, 3, 4, 5	Rubber	ASTM A753	0000000	000000
0.0123"	-0.001" to 0.001"	0.01"	0.0023"	4"	1, 2, 3, 4, 5	Rubber	ASTM A753	0000000	00000
0.0123"	-0.001" to 0.001"	0.01"	0.0023"	15"	1, 2, 3, 4, 5	Rubber	ASTM A753	0000000	000000

Thermally Stable Invar 36 Nickel Alloy Rods

Yield Strength: 40,000 psi
Hardness: Rockwell B90 (Medium)
Temper Rating: Softened (Annealed)
Specifications Met: ASTM F1684

Because Invar 36 holds its size and shape when temperatures rise, this nickel-iron alloy is the go-to material when dimensional stability is required. It is commonly used when precision is a priority, such as for scientific instruments and optical devices.

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		1/2 ft. Lg.	1 ft. Lg.	3 ft. Lg.
1/8"	-0.003" to 0.003"	0000000	00000	000000	000000
1/4"	-0.004" to 0.004"	0000000	00000	00000	00000
3/8"	-0.007" to 0.007"	0000000	00000	00000	00000
1/2"	-0.005" to 0.005"	0000000	00000	00000	000000
5/8"	-0.005" to 0.005"	0000000	00000	00000	000000
3/4"	-0.01" to 0.01"	0000000	00000	000000	000000
1"	-0.01" to 0.01"	0000000	000000	000000	000000

Thermally Stable Invar 36 Nickel Alloy Sheets

Yield Strength: 40,000 psi
Hardness: Rockwell B90 (Medium)
Temper Rating: Softened (Annealed)
Specifications Met: ASTM F1684

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.

		6" × 6"		12" × 12"		12" × 24"
Thick.	Thick. Tolerance		Each		Each		Each
0.01"	-0.0005" to 0.0005"	0000000	000000	0000000	000000	0000000	000000
0.02"	-0.001" to 0.001"	0000000	00000	0000000	00000	0000000	000000
0.04"	-0.001" to 0.001"	0000000	00000	0000000	00000	0000000	000000
0.06"	-0.002" to 0.002"	0000000	00000	0000000	000000	0000000	000000

Easy-to-Machine Thermally Stable Kovar Nickel Alloy Sheets

Yield Strength: 50,000 psi
Hardness: Rockwell B80 (Medium)
Temper Rating: Softened (Annealed)
Specifications Met: ASTM F15

This nickel-iron-cobalt alloy expands at the same rate as glass when heated. It offers better machinability than Invar 36 and is often used anywhere a dependable glass-to metal seal is required, such as in diodes and microwave tubes.

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.

Thick.	Thick. Tolerance		4" × 4"	6" × 6"	12" × 12"
0.01"	-0.001" to 0.001"	0000000	000000	000000	000000
0.02"	-0.001" to 0.001"	0000000	00000	00000	000000
0.04"	-0.001" to 0.001"	0000000	00000	000000	000000
0.06"	-0.002" to 0.002"	0000000	00000	000000	000000
0.09"	-0.003" to 0.003"	0000000	000000	000000	000000
0.125"	-0.003" to 0.003"	0000000	000000	000000	000000

Easy-to-Machine Thermally Stable Kovar Nickel Alloy Rods

Yield Strength: 55,000 psi
Hardness: Rockwell B105 (Hard)
Temper: Condition B (1/4 Hard)
Specifications Met: ASTM F15

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	Mechanical Finish	Straightness Tolerance		1/2 ft. Lg.	1 ft. Lg.	3 ft. Lg.
3/16"	-0.002" to 0.002"	Ground	1/8" per 5 ft.	0000000	000000	000000	000000
1/4"	-0.002" to 0.002"	Ground	1/8" per 5 ft.	0000000	00000	00000	000000
3/8"	-0.002" to 0.002"	Ground	1/8" per 5 ft.	0000000	00000	00000	000000
1/2"	-0.002" to 0.002"	Ground	1/8" per 5 ft.	0000000	00000	000000	000000
5/8"	-0.002" to 0.002"	Ground	1/8" per 5 ft.	0000000	000000	000000	000000
3/4"	-0.002" to 0.002"	Ground	1/8" per 5 ft.	0000000	000000	000000	000000