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Gauge blocks and Accessories

• Gauge Blocks
• Setting Rings
• Gauge Block accessories
• Optical Flats
• Measuring Balls

Gauge blocks DIN EN ISO 3650 (previously DIN 861)

Grade and recommended use:

Grade K Primary standard as absolute master gauge in the laboratory
Grade 0 For testing measuring devices and setting up high-precision gauges
Grade 1 For testing check gauges, setting up measuring devices and as working dimension
Grade 2 Setting and working dimensions for production

Material properties in comparison: (The data is approximate)

Properties	Steel	Tungsten carbide	Ceramic
Coefficient of expansion	11±1 × 10-6 / K	4,23 × 10-6 / K	9,7 × 10-6 / K
Heat conductivity	High	Low	Very low
Hardness	> 63 HRc	1450–1500 HV30	1350 HV
Wear resistance	Good	Very good	Excellent
Wringing characteristics	Excellent	Good	Acceptable
Geometric fidelity	Very good with proper handling	Excellent	Excellent
Corrosion resistance	Satisfactory	Good	Excellent
Mechanical stability	Very good	Good	Good

Permissible deviations and tolerances DIN EN ISO 3650:
te = Permissible deviation of nominal size at any position
tv = Tolerance for the deviation range

Size mm			Grade K				Grade 0				Grade 1			Grade 2
over	up to		±te μm	tv μm			±te μm	tv μm			±te μm	tv μm		±te μm	tv μm
0	10		0,20	0,05			0,12	0,10			0,20	0,16		0,45	0,30
10	25		0,30	0,05			0,14	0,10			0,30	0,16		0,60	0,30
25	50		0,40	0,06			0,20	0,10			0,40	0,18		0,80	0,30
50	75		0,50	0,06			0,25	0,12			0,50	0,18		1,00	0,35
75	100		0,60	0,07			0,30	0,12			0,60	0,20		1,20	0,35
100	150		0,80	0,08			0,40	0,14			0,80	0,20		1,60	0,40
150	200		1,00	0,09			0,50	0,16			1,00	0,25		2,00	0,40
200	250		1,20	0,10			0,60	0,16			1,20	0,25		2,40	0,45
250	300		1,40	0,10			0,70	0,18			1,40	0,25		2,80	0,50
300	400		1,80	0,12			0,90	0,20			1,80	0,30		3,60	0,50
400	500		2,20	0,14			1,10	0,25			2,20	0,35		4,40	0,60
500	600		2,60	0,16			1,30	0,25			2,60	0,40		5,00	0,70
600	700		3,00	0,18			1,50	0,30			3,00	0,45		6,00	0,70
700	800		3,40	0,20			1,70	0,30			3,40	0,50		6,50	0,80
800	900		3,80	0,20			1,90	0,35			3,80	0,50		7,50	0,90
900	1000		4,20	0,25			2,00	0,40			4,20	0,60		8,00	1,00

Calibration:

Gauge blocks made of steel, tungsten carbide and ceramic can be delivered with a works calibration certificate or a DKD calibration certificate of an
accredited laboratory.
Please note that our special prices for gauge block sets include the DKD or works calibration certificate. The order numbers are additionally marked with "p" in this case.