Steel 16NCD13 - 1.6657 - 14NiCrMo 13-4

The 16NCD13 case-hardening steel, lightly alloyed with chromium, nickel, and molybdenum, offers excellent mechanical properties. After carburizing, it achieves outstanding wear and fatigue resistance while maintaining high core toughness. Depending on the heat treatment, it is used for manufacturing landing gears, actuators, and any components requiring long-term reliability and high resistance to cyclic stresses.

Available shapes :

Carbon 0.145%
Chromium 0.95%
Manganese 0.45%
Molybdenum 0.25%
Nickel 3.25%
Phosphorus 0.0125%
Sulfur 0.01%
Silicon 0.275%

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16NCD13 Case-Hardening Steel: Reliability, Strength, and Performance

The 16NCD13 is a lightly alloyed case-hardening steel, often used in applications requiring fatigue and wear resistance. It is primarily suited for parts subjected to high stresses, such as safety components, in sectors as diverse as automotive, precision mechanics, and aerospace.

This high-performance steel has found the right balance between good core toughness and high surface strength, further enhanced through carbon addition. Thanks to a fine microstructure and the presence of nickel in the alloy, it also offers good fatigue resistance. Although it has decent weldability, 16NCD13 still requires specific precautions (preheating, post-heating, etc.). It is typically used for heavy repetitive mechanical parts such as gears, pinions, drive shafts, and axles.

In short, the 16NCD13 steel is chosen for its mechanical properties in extreme environments, such as the aerospace sector. Offering an excellent compromise between surface hardness, wear resistance, core toughness, and fatigue strength, it is built to last despite high cyclic stresses.

Chemical composition of 16NCD13

The variations in its chemical composition for aerospace.

% C
Carbon
Cr
Chromium
Mn
Manganese
Mo
Molybdenum
Ni
Nickel
P
Phosphorus
S
Sulfur
Si
Silicon
Min. 0.12 0.80 0.30 0.20 3.00 <0.00 <0.00 0.15
Max. 0.17 1.10 0.60 0.30 3.50 0.025 0.020 0.40

Key properties

The most remarkable properties of this steel alloy

Tensile Strength

Tensile Strength

880-1380 MPa

Impact Toughness

Impact Toughness

≥600 kJ/m²

Yield Strength

Yield Strength

≥640 MPa

Brinell Hardness

Brinell Hardness

≥241

Optimizing the use of 16NCD13 : treatments, regulations, and options.

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The information in this technical data sheet is indicative and may be changed without notice. The values given are typical and not guaranteed. Paris-St-Denis-Aero disclaims any responsibility for product choices or the consequences of those choices.
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Applications of
16NCD13 steel

How it is used in various industries.

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