1.6569 (17NiCrMoS6-4)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Cr-Ni-Mo with Mo < 0.4% + Ni < 0.2%

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
95.585–97.09 < 0.4 0.6–0.9 0.8–1.1 1.2–1.5 < 0.025 0.14–0.2 0.02–0.04 0.15–0.25

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ Treatment
< 16 > 1200 After carburization, in the core
16–40 > 1000 Cementation, in the core
40–100 > 900 Cementation, in the core

Brinell hardness number

Rolling Standard Classifiers Value, HBW
improved machinability 255
annealing, soft 229
specified strength 179–229
specified strength, ferrite-pearlite composition 149–201

Standards

Standard Description
EN 10084
EN 10277-4

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength