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S165M QT900 Bar

Alternative and trade names
EN 1.4418, S165M, SS 2387, EN X4CrNiMo16-5-1
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Description

S165M is a high strength low carbon martensitic/ austenitic stainless steel. It combines high strength, good fatigue resistance with good weldability, properties which are maintained after welding. S165M is designed for application in slightly corrosive environment. Two minimum tensile levels are often used; QT760 and QT900. QT900 is mostly used by the industry. Corrosion resistance is at the level of AISI 304L in most environments, however insensitive to intergranular corrosion.

Related Standards

Properties

Dimension

Diameter d

10 - 410 mm

Mechanical

Elongation A

18 % at 20 °C

Hardness, Brinell HB

300 [-] at 20 °C

Impact strength, Charpy notched Ivnot

100 kJ/m² at -40 °C

Tensile strength Rm

1050 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

920 MPa at 20 °C

Chemical properties

Element

Weight %

Comment

Cr

15 - 17 %

Ni

4 - 6 %

Mo

0.8 - 1.5 %

Mn

0.6 - 1.5 %

Si

0.3 - 0.7 %

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Technological properties

Application areas

The alloy has been designed to resist erosion corrosion or cavitation experienced in hydraulic applications. General areas for applications: Shafts, propellers, spindles, bolts, etc.

Welding

Good

This material data has been provided by Sverdrup Steel.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.