Standard

Name

DIN

16NiCr4

EN

EN 1.5920

Element

Percentage

Carbon (C)

0.14 – 0.19

Silicon (Si)

0.40 (max)

Manganese (Mn)

0.40 – 0.70

Phosphorus (P)

0.025 (max)

Sulfur (S)

0.035 (max)

Chromium (Cr)

1.80-2.10

Nickel (Ni)

1.50 – 1.90

Heat Treatment Process

Temperature Range (°C)

Annealing

680-720 cool slowly

Normalizing

850-880

Hardening

Carburizing: 850-980 Cooling from carburizing temperature: oil, water, thermal bath, salt bath

Core hardening: 840-870

Surface hardening: 800-830 Quenching in oil, water, thermal bath.

Tempering

150-400