DIN 17021-1 E : 1976
Current
The latest, up-to-date edition.
HEAT TREATMENT OF FERROUS METALS; MATERIAL SELECTION; STEEL SELECTION ACCORDING TO HARDENABILITY
Hardcopy , PDF
English
01-01-1976
1 Scope
2 Concepts
2.1 Hardening
2.2 Tempering
2.3 Quenching and tempering
2.4 Hardenability
2.4.1 Potential hardness increase
2.4.2 Hardness penetrability
2.5 Hardened state
2.5.1 Hardness increase
2.5.2 Hardness penetration
2.6 Hardness penetration depth
2.7 Cooling characteristic
2.8 Cooling rate
3 Basic considerations concerning hardenability
3.1 Potential hardness increase
3.2 Influence of alloying elements
3.3 Testing hardenability
4 Factors influencing the choice of steel
4.1 Dimensional change, distortion and risk of
cracking
4.2 Effect of cooling agents
4.3 Effect of tempering during the quenching and
tempering process
4.3.1 General information
4.3.2 Embrittlement phenomena
5 Steel selection
5.1 Relationship between the cooling process in the
end quench specimen and in workpieces
5.1.1 Principles
5.1.2 Relationship between the cooling
characteristic of cylindrical specimens
and the end quench specimen
5.2 Relationship between hardness and other
mechanical properties at ambient temperature
5.3 Examples for steel selection
5.3.1 Selection on the basis of cooling
5.3.2 Selection on the basis of tests under
operating conditions
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