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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1.6523

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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