KH530 Portable Leeb Hardness Tester

Features

Color display (320×240 TFT) with adjustable backlight

Converts to all common hardness scales (HV ,HB,HRC,HRB,HRA,HS), and real time display HL value.

Probe plug and test. Support hot plug, the probe can be set automatically and automatic recognition function.

Built in high capacity rechargeable lithium battery and charging control circuit. Continuous working period of no less than 150 hours.

Instrument with automatic sleep, automatic shutdown and other power saving features.

Menu operating, the operation is easy and convenient.

With USB interface can be convenient, fast data exchange and parameter settings.

Equipped with 7 types of impact devices which need not to be recalibrated when changing them, the system can identify the type of impact device automatically.

Max 500 groups(impact times:32～1)of data can be stored at internal non volatile data storage.

Upper and lower limit of hardness can be preset; When the tested value exceeds the limits, alarm will send out automatically to make convenient for the requirements of batch measurements.

Test values software calibration function.

Material of "cast steel" is added; HB values can be read out directly when D/DC impact device is used to measure "cast steel" work piece.

Thermal printer integrated, convenient for in field printing.

Software of PC can be installed according to the requirements of user, the function will be more powerful to satisfy the more strict demands of quality control and management.

Main Application

The assembled machinery and permanently installed parts

Die cavity of molds

Heavy work piece

Failure analysis of pressure vessel, steam turbo-generator set and other equipment

Narrow testing space where work piece installed

Bearings and other parts

Cases which require the test result with normalized original recording

Material identification of the metal material warehouse

Quick tests of large range and multipoint measuring positions for heavy workpiece

Testing Range

Testing range see table 1 and table 2.

Table 1

Material	Hardness method	Impact device
Material	Hardness method	D/DC	D+15	C	G	E	DL
Steel and cast steel	HRC	17.9～68.5	19.3～67.9	20.0～69.5		22.4～70.7	20.6～68.2
	HRB	59.6～99.6			47.7～99.9		37.0～99.9
	HRA	59.1~85.8				61.7～88.0
	HB	127～651	80～638	80～683	90～646	83～663	81～646
	HV	83～976	80～937	80～996		84～1042	80～950
	HS	32.2～99.5	33.3～99.3	31.8～102.1		35.8～102.6	30.6～96.8
Hammered steel	HB	143~650
Cold work tool steel	HRC	20.4～67.1	19.8～68.2	20.7～68.2		22.6～70.2
Cold work tool steel	HV	80～898	80～935	100～941		82～1009
Stainless steel	HRB	46.5～101.7
	HB	85～655
	HV	85～802

Table 1

Material	Hardness method	Impact device
Material	Hardness method	D/DC	D+15	C	G	E	DL
Gray cast iron	HRC
	HB	93～334			92～326
	HV
Nodular cast iron	HRC
	HB	131～387			127～364
	HV
Cast aluminum alloys	HB	19～164		23～210	32～168
Cast aluminum alloys	HRB	23.8～84.6		22.7～85.0	23.8～85.5
Brass(copper-zinc alloys)	HB	40～173
Brass(copper-zinc alloys)	HRB	13.5～95.3
Bronze (copper-aluminum/copper-tin alloys)	HB	60～290
Wrought copper alloys	HB	45～315

Table 2

No.	Material	HLD	Strength σ_b(MPa)
1	Mild steel	350～522	374～780
2	High-carbon steel	500～710	737～1670
3	Cr steel	500～730	707～1829
4	Cr-V steel	500～750	704～1980
5	Cr-Ni steel	500～750	763～2007
6	Cr-Mo steel	500～738	721～1875
7	Cr-Ni-Mo steel	540～738	844～1933
8	Cr-Mn-Si steel	500～750	755～1993
9	Super strength steel	630～800	1180～2652
10	Stainless steel	500～710	703～1676

Types and specification

	No.			Remarks
Standard Delivery	1	Main unit	1
	2	D type impact device	1
	3	Small supporting ring	1
	4	Nylon brush (A)	1
	5	High value Leeb test block	1
	6	Battery Charger	1	9V 1000mA
	7	Paper for printing	1
	8	Communication cable	1
	9	DataView Software	1
Additional Optional Delivery	1	Nylon brush (II)		In case of choosing G type impact device
	2	Various non-conventional type of impact devices		See table 3
	3	Various non-conventional type of impact supporting ring		See table 4
	4

Table 3

Non conventional impact devices		DC(D)/DL	D+15	C	G	E
Impacting energy Mass of impact body		11Mj 5.5g/7.2g	11mJ 7.8g	2.7mJ 3.0g	90mJ 20.0g	11mJ 5.5g
Test tip Hardness Diameter of test tip Material of test tip		1600HV 3mm Tungsten carbide	1600HV 3mm Tungsten carbide	1600HV 3mm Tungsten carbide	1600HV 5mm Tungsten carbide	5000HV 3mm synthetic diamond
Impact device Diameter Impact device Length Impact device Weight		20mm 86(147)/ 75mm 50g	20mm 162mm 80g	20mm 141mm 75g	30mm 254mm 250g	20mm 155mm 80g
Max. hardness of workpiece		940HV	940HV	1000HV	650HB	1200HV
Mean roughness of workpiece surface of the Ra		1.6μm	1.6μm	0.4μm	6.3μm	1.6μm
Min. weight of sample Measure directly Need support firmly Need coupling tightly		>5kg 2～5kg 0.05～2kg	>5kg 2～5kg 0.05～2kg	>1.5kg 0.5～1.5kg 0.02～0.5kg	>15kg 5～15kg 0.5～5kg	>5kg 2～5kg 0.05～2kg
Min. thickness of sample coupling tightly Min.layer thickness for surface harden		5mm ≥0.8mm	5mm ≥0.8mm	1mm ≥0.2mm	10mm ≥1.2mm	5mm ≥0.8mm
Size of tip indentation
Hardness 300HV	Indentation diameter	0.54mm	0.54mm	0.38mm	1.03mm	0.54mm
Hardness 300HV	Indentation depth	24μm	24μm	12μm	53μm	24μm
Hardness 600HV	Indentation diameter	0.54mm	0.54mm	0.32mm	0.90mm	0.54mm
Hardness 600HV	Indentation depth	17μm	17μm	8μm	41μm	17μm
Hardness 800HV	Indentation diameter	0.35mm	0.35mm	0.35mm	--	0.35mm
Hardness 800HV	Indentation depth	10μm	10μm	7μm	--	10μm
Available type of impact device		D: General test DC: Hole or hollow-cylindrical test DL: Slender narrow groove or hole test	D+15: groove or reentrant surface	C: small, light, thin parts or surface of hardend layer	G: large, thick, heavy or rough surface steel	E: super high hardness material