1.4545 (15-5PH) Martensitic Nickel‑Chromium Steel: Properties & Applications

The material 1.4545 is a martensitic nickel-chromium steel which is particularly strong and tough at the same time. The material is suitable for low temperatures (down to approx. -196°C) as well as for high temperatures (up to approx. 300°C). It is free of ferrit content.

Properties

General

Property	Temperature	Value
Density	23.0 °C	7.8 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	200 GPa
Elongation A5	23.0 °C	10 %	min.
Hardness, Brinell	23.0 °C	440 [-]	max.
Tensile strength	23.0 °C	930 - 1200 MPa
Yield strength Rp0.2	23.0 °C	720 MPa	min.

Thermal

Property	Temperature	Value
Specific heat capacity	23.0 °C	440 J/(kg·K)
Thermal conductivity	23.0 °C	11 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	23.0 °C	7.7E-7 Ω·m

Chemical properties

Property	Value	Comment
Carbon	0.07 %	max.
Chromium	15 - 15.5 %
Copper	2.5 - 4.5 %
Manganese	1 %	max.
Nickel	3.5 - 4.5 %
Niobium	0.15 - 0.49 %	Nb+Ta
Phosphorus	0.03 %	max.
Silicon	1 %	max.
Sulfur	0.015 %	max.

Technological properties

Property
Application areas	Aerospace, Mechanical Engineering, Power Engineering, Plant construction, Chemistry Offshore
Corrosion properties	Good
Welding	Good

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Metal