1.4313 (ASTM A182 F6NM - UNS S41500) Material Data Sheet

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1.4313 – ASTM A182 F6NM – UNS S41500 EU material directly from stock & cut to your required dimensions!

International identifiers

1.4313 - F6NM - UNS S41500 is a corrosion and acid resistant, soft martensitic chromium-nickel steel with added molybdenum.

The high toughness properties provide 1.4313 with excellent capabilities and increasing popularity. Valves, compressors, and centrifuges are typically made of this stainless steel.

Steel 1.4313 - also known as F6NM - is primarily used in the oil industry and in components for power plants and reactor technology.

This stainless-steel grade is also used for the manufacture of turbines for hydroelectric power plants.

The material 1.4313 is available in QT650, QT780 and QT900:

Tensile strength650 - 830 N/mm2 (Rm)780 - 980 N/mm2 (Rm)900 - 1100 N/mm2 (Rm)
Hardness according to Brinell192 - 242 HB245 - 309 HB285 - 346 HB

Mechanical properties at room temperature: QT650

≥ 520≥ 12≥ 40≥ 54

Mechanical properties at room temperature: QT780

≥ 635≥ 15≥ 40≥ 50

Mechanical properties at room temperature: QT900

≥ 800≥ 10 ≥ 40

1.4313 Material data sheet


The stainless steel 1.4313 features excellent mechanical properties. The addition of molybdenum provides medium corrosion resistance, which can be improved by polishing the surfaces.

Weldability:      poor

Machinability:   5 (1 = poor - 10 = good)

Polishability:    yes

Corrosion class:   2 (0 = poor - 5 = good)

In the tempered condition, 1.4313 has a tensile strength of 650 - 1100 N/mm². The toughness properties exist from -60°C to +300°C. 1.4313 can be magnetised.

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Chemical composition
F6NM - UNS S41500
min.     12,00,43,5   

F6NM - UNS S41500

min.      0,02         
In stock

round, rolled / forged, quenched and tempered, machined oder peeled surface
flat, forged, quenched and tempered, pre-machined

Advantages of saw cut

The processing with the saw is a mechanical processing of the material, which results in a significantly lower unintended deformation and increased hardness for the existing structure, such as the thermal cutting.

Thus, the machined workpiece has a homogeneous structure even at the edge, which does not change in the continuation of the material.
This circumstance allows immediate finishing of the workpiece with milling or drilling . So it is not necessary to anneal the material or make a similar operation beforehand.

Do you have any questions?

We are happy to answer your questions and make you an offer for these and other materials. Contact us now for more information.

Heidi Sommer

Your contact person Heidi Sommer+49 (0) 35263-665-33

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Notice: Specifications contained in following data sheet are provided as a description, liability is excluded!


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