Material 1.6523

Case hardening steel

The material 1.6523 is often used for components in general mechanical engineering if the parts are case-hardened.

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Standards

HDIN / EN	US-Standard	AFNOR	UNI	JIS	request
20NiCrMo2-2 21NiCrMo2	AISI 8620 SAE 8620		20NiCrMo2	SNCM220 SNCM220H SNCM220HRCH SNCM220M SNCM220RCH SNCM220WCH	request

Material Category: Case hardening steel

Applications

Heavy-duty gear parts, bolts, shafts, bushings, shift sleeves for mechanical and automotive engineering

Heat Treatment

Soft annealing: Soft annealing takes place at temperatures of 650 °C - 700 °C.

Tempering: Tempering is carried out at temperatures of 170 °C - 210 °C.

Direct hardening: Single hardening takes place at temperatures of 850 °C - 880 °C.

Weldability

The material 1.6523 is usually weldable.

Chemical Composition

C %	Si %	Mn %	P %	S %	Cr %	Mo %	Ni %
0,17 - 0,23	max 0,40	0,65 - 0,95	max 0,025	max 0,035	0,35 - 0,70	0,15 - 0,25	0,40 - 0,70

Product Specifications

DIN EN 10084
DIN EN 10263-3
DIN EN 10277
DIN EN 10297-1
DIN EN ISO 683-3

Mechanical Properties

DIN EN 10084	Härte HBW
behandelt auf Härtespanne	161 - 212
behandelt auf Ferrit-Perlit Gefüge und Härtspanne	149 - 194
weichgeglüht	<= 212

DIN EN 10277
behandelt auf Ferrit-Perlit Gefüge und Härtspanne + geschält	Härte HBW
16 - 40 mm	149 - 194
40 - 63 mm	149 - 194
63 - 100 mm	149 - 194
weichgeglüht + geschält
16 - 40 mm	max 212
40 - 63 mm	max 212
63 - 100 mm	max 212
behandelt auf Ferrit-Perlit Gefüge und Härtespanne + gezogen
16 - 40 mm	149 - 240
40 - 63 mm	149 - 235
63 - 100 mm	149 - 235
weichgeglüht und gezogen
5 - 10 mm	max 270
10 - 16 mm	max 260
16 - 40 mm	max 255
40 - 63 mm	max 255
63 - 100 mm	max 255

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