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Material 1.7103

Spring steel

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1.7103

Standards

HDIN / EN	US-Standard	AFNOR	UNI	JIS	request
67SiCr5					request

Material Category: Spring steel

Applications

Coil springs, valve springs, disc springs

Heat Treatment

Hot forming 820 - 900 C° / 850 - 1050 C°
Normalizing 850 - 880 C°, air cooling
Soft annealing (+A) 640 - 680 C°, cooling furnace
Hardening 830 - 860 C°, cooling oil
Temper 430 - 500 C°, cooling air

Chemical Composition

C %	Si %	Mn %	P %	S %	Cr %
0,62 - 0,72	1,20 - 1,40	0,40 - 0,60	max 0,035	max 0,035	0,40 - 0,60

Mechanical Properties

naturhart	>= 310 HB 30
weichgeglüht	<= 240 HB 30

federhart
Streckgrenze Re	>= 1350 N/mm²
Zugfestigkeit Rm	1500 - 1700 N/mm²
Bruchdehnung (A5,65)	>= 5 %
Einschnürung (Z)	>= 20 %
Kerbschlagarbeit (DVM)	>= 14 Joule

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Five reasons that are in favor of BASEDO STEEL

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Five reasons that are in favor of BASEDO STEEL

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