Material 1.0758

Free-cutting steel

The material 60SPb22 is a silicon-killed free-cutting steel. The addition of lead makes the material easy to machine. 60SPb20 can be tempered.

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Standards

HDIN / EN	US-Standard	AFNOR	UNI	JIS	request
60SPb22 60SPb20					request

Material Category: Free-cutting steel

Applications

The material 60SPb22 is used for mass-produced parts with the highest strength.
This material can often be found in the automotive industry, apparatus engineering and mechanical engineering.

Heat Treatment

Core hardening, 810 - 840 C°, oil quenching
Core hardening, 800 - 850 C°, water quenching
Tempering, 540 - 680 C°, duration >= 1 hour

Weldability

The material 60SPb22 should not be welded.

Chemical Composition

C %	Si %	Mn %	P %	S %	Pb %
0,57 - 0,65	0,10 - 0,30	0,70 - 1,10	max 0,060	0,180 - 0,250	0,150 - 0,350

Mechanical Properties

1.0758 / 60SPb22 Untreated and peeled
Abmessung (mm)	Tensile strength (Rm)	Hardness (HB 30)
<= 10 mm	670 - 880 N/mm²	<= 269 HB 30
11 - 16 mm	670 - 880 N/mm²	<= 269 HB 30
17 - 40 mm	660 - 870 N/mm²	<= 261 HB 30
41 - 63 mm	650 - 860 N/mm²	<= 261 HB 30
64 - 100 mm	640 - 840 N/mm²	<= 255 HB 30

Cold drawn and Stress-relieved annealed		Tensile strength (Rm)
<= 63 mm		max 750 N/mm²

Cold drawn or peeled and annealed	0.2% Yield strength (Rp0.2)	Tensile strength (Rm)	Elongation (A5, 65)
<= 10 mm			>= 7 %
11 - 16 mm			>= 8 %
<= 16 mm	mind. 570 N/mm²	830 - 980 N/mm²
17 - 40 mm	mind. 490 N/mm²	780 - 930 N/mm²	>= 10 %
41 - 63 mm	mind. 450 N/mm²	740 - 880 N/mm²	>= 11 %
64 - 100 mm	mind. 450 N/mm²	740 - 880 N/mm²	>= 11 %

Kaltgezogen	0.2% Yield strength (Rp0.2)	Tensile strength (Rm)	Elongation (A5, 65)
<= 10 mm	mind. 645 N/mm²	830 - 1080 N/mm²	>= 5 %
11 - 16 mm	mind. 540 N/mm²	780 - 1030 N/mm²	>= 6 %
17 - 40 mm	mind. 430 N/mm²	740 - 930 N/mm²	>= 7 %
41 - 63 mm	mind. 355 N/mm²	710 - 900 N/mm²	>= 8 %
64 - 100 mm	mind. 335 N/mm²	640 - 880 N/mm²	>= 9 %

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