Material 1.0721

Free-cutting steel

The material 10S20 is a free-cutting steel alloyed with silicon. The hardenability is improved by the addition of silicon.

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Standards

HDIN / EN	US-Standard	AFNOR	UNI	JIS	request
10S20	AISI 1108 AISI 1109 AISI 1111 AISI B1111 UNS G11080 UNS G11090		CF10S20		request

Material Category: Free-cutting steel

Chemical Composition

C %	Si %	Mn %	P %	S %
0,07 - 0,13	max 0,40	0,70 - 1,10	max 0,060	0,150-0,250

Product Specifications

DIN EN 10277

Mechanical Properties

1.0721 / 10S20 Bright steel product. Free-cutting steels. Case-hardened steels Rolled and peeled
Dimension mm		Tensile strength (Rm) N/mm²	Hardness (HBW)
16 - 40 mm		360-530 N/mm²	<= 154 HBW
40 - 63 mm		360-530 N/mm²	<= 154 HBW
63 - 100 mm		350-490 N/mm²	<= 140 HBW

Cold drawn
Dimension mm	0,2% Yield strength (Rp 0,2) N/mm²	Tensile strength (Rm) N/mm²	Elongation (A5, 65) %
5 - 10 mm	>= 410 N/mm²	360 - 530 N/mm²	>= 7%
10 - 16 mm	>= 390 N/mm²	360 - 530 N/mm²	>= 8%
16 - 40 mm	>= 360 N/mm²	360 - 530 N/mm²	>= 9%
40 - 63 mm	>= 295 N/mm²	360 - 530 N/mm²	>= 10%
63 - 100 mm	>= 235 N/mm²	350 - 490 N/mm²	>= 11%

Cold drawn and Stress-relieved annealed
Dimension mm		Tensile strength Rm N/mm²
63 - 100 mm		520 - 780 N/mm²

Cold drawn
Dimension mm	Yield strength (Re) N/mm²	Tensile strength (Rm) N/mm²	Elongation (A5,65) %
5 - 10 mm	>= 410 N/mm²	540 - 780 N/mm²	>= 7%
10 - 16 mm	>=390 N/mm²	490 - 740 N/mm²	>= 8%
16 - 40 mm	>=355 N/mm²	460 - 710 N/mm²	>= 9%
40 - 63 mm	>=295 N/mm²	390 - 640 N/mm²	>= 10%
63 - 100 mm	>=235 N/mm²	360 - 610 N/mm²	>= 11%

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