CK75 blue tempered spring steel supplier

CK75 blue tempered spring steel supplier

Spring steel is a low alloy, medium carbon steel or high carbon steel with very high yield strength. This allows objects made of spring steel to return to their original shape despite significant bending or twisting.

CK75 spring steel is a low alloy, carbon steel material with carbon content 0.72-0.84. This material can be heat-treated to the required tensile strength, operated by annealing process (CRCA) or hardened and tempered condition (Q+T). Process engineering of heat treament is very vital to the inherent quality of spring steel strip. The edge of CK75 spring steel can be rounded or slit. Underd continous hardened (810-840`C) and tempered (300-500`c) facility, the finish surface can be blue,yellow,black,etc..

We also supply other following materials in hardened and tempered condition:

Delivery condition (strip,coil,sheet)	Grade based on DIN Standard	High quality heat treating steel strip, coil, sheet supply capacity and condition
		Hardness<20HRC		Hardness 29-55HRC
		annealed		hardened and tempered
		thickness	Width	thickness	Width
High carbon steel	CK50,CK55, CK60,CK67, CK70,CK75,C75Cr1, SK5	0.15-2.5mm	8-600mm	0.15-2.5mm	8-300mm
Alloy spring steel	50CrV4, 51CrV4, 60Si2Mn	0.20-2.2mm	8-180mm	0.20-2.2mm	8-180mm
Stainless spring steel	3Cr13-6Cr13	0.20-2.5mm	8-150mm	0.20-2.5mm	8-150mm
Edge process	slit edge; both rounded; one side round, one side slit; square etc
Finish surface	polished (blue, yellow, white, grey-blue, black, bright) or Nature etc
Tolerance	thickness +/-0.03mm max; width +/-0.3mm max
Physical Property	tensile strength - 450-1850N/mm2

Usage:
shutter door, plastic trowel, bricklay trowel, putty knives, scraper, springs, metal part, shoe insole, shoe accessories, blade, band saw blade for wood-cutting etc

CK75 blue tempered spring steel supplier

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