Kovar with Material Certification

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	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Thickness Thickness

	Diameter Diameter

	Length Length

1/2 ft.

1 ft.

3 ft.

	Width Width

12"

	Shape Shape

	Sheet and Bar
	Rod and Disc

	Temper Rating Temper Rating

Softened (Annealed)

Hardened

	Hardness Rating Hardness Rating

Medium

Hard

	Hardness Hardness

Rockwell B80

Rockwell B105

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

DFARS Specialty Metals
Compliant

	Yield Strength Yield Strength

50,000 psi

55,000 psi

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

REACH Compliant

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

12 Products

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 ACTIVITY 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	00000
0.04"	-0.001" to 0.001"	0000000	00000	00000	000000
0.06"	-0.002" to 0.002"	0000000	00000	000000	000000
0.09"	-0.003" to 0.003"	0000000	00000	000000	000000
0.125"	-0.003" to 0.003"	0000000	00000	000000	000000

Easy-to-Machine Thermally Stable Kovar Nickel Alloy Rods

Yield Strength: 55,000 psi
Hardness: Rockwell B105 (Hard)
Temper: Condition B (Hardened)
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 ACTIVITY 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	00000
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	00000	000000	000000
3/4"	-0.002" to 0.002"	Ground	1/8" per 5 ft.	0000000	000000	000000	000000