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Welcome to Zhenjiang Scharp Machinery Tools., Co.,Ltd.

Zhenjiang Scharp Machinery Tools., Co.,Ltd.

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Material Specifications & Inspection Procedures

Material Specification Sheet
Inspection Process

Cutting tools performance mainly depends on raw material composition, heat-treat process and precision tolerance. Among them material is the most important factor.Different countries developed their own steel codes.

Following is a data sheet that show major steel codes.

	China	USA	Japan	Germany	ISO	character	HB	Temper temperature	Usage
	GB	ASTM	JIS	DIN	ISO	character	HB	Temper temperature	Usage
Carbon Steel	T7	W1-7	SK7	C70W2	TC70	regular tensile and hardness	87	800-820	chisel, hack saw,
	T8	W1-71/2	SK6	C80W1	TC80	good harness and abrasive	87	780-800	route bits, axle, hack saw
	T8Mn	W1-8	SK5	C85W	1	good harness and abrasive	87	780-800	hack saw, pouch
	T9	W1-81/2	SK5	1	TC90	good harness and abrasive	92	760-780	wood working cutting tools
	T10	W1-91/2	SK4	1	TC105	high hardness and abrasive	97	760-780	wood working cutting tools
	T11	W1-101/2	SK3	C105W2	1	high hardness and abrasive	07	760-780	hand use taps and die, scrapers, files
	T12	W1-111/2	SK2	1	TC120	high hardness and abrasive	07	760-780	hand use taps and die
	T13	W1-121/2	SK1	1	TC140	high hardness and abrasive	17	760-780	scrapers, files, gauge and so on
high speed steel	W18Cr4V	T1	SKH2	1	1	high hardness and red hardness	55	1270-1285	tool bits milling cutters drill bits reamer
	W6Mo5Cr4V2	M2	SKH51	1	1	high hardness and red hardness	55	1210-1230	tool bits milling cutters drill bits reamer
	W9Mo3Cr4V	1	1	1	1	high hardness and red hardness	55	1220-1240	tool bits milling cutters lathe drill bits reamer
	W6Mo5Cr4V2Al	1	1	1	1	super hardness, its red hardness is better than W6Mo5Cr4V2	69	1230-1240	tool bits, milling cutters drill bits reamer hob and so on
	W2Mo9Cr4V2	M7	1	1	1	super red hardness	1	1	tool bits, milling cutters drill bits reamer hob and so on
	W6Mo5Cr4V2Co5	M35	1	1	1	best red hardness	1	1	tool bits, milling cutters drill bitsreamer hob and so on
	W2Mo9Cr4VCo8	M42	1	1	1	best red hardness	1	1	tool bits, milling cutters drill bits reamer hob and so on

Following is a data sheet that show major steel codes.

Quality is our factory's life. We based our quality control on standard ISO9001 system. With fully inspection equipments and professional workers, we control the quality from raw material to finished products. We conduct cutting test for each dispatch before shipment.

Customer comments are our valuable sources of quality information. Every complaint will be processed at once. Also we give customer complete compensation if losses arise from our producs' quality.

Follows are our regular quality control diagram.

raw material quality control
physical -chemical analysis
chemical test ( content of each element)			physical test (low multiple, high multiple)
production process
quality control during production process
operator self check	checker first check		checker tour check		checker final confirm
finished product
spot check by checker
static confirm		cutting test		tool life test
packing
packing check
put into warehouse for shipment