1.4313 – ASTM A182 F6NM – UNS S41500 EU material directly from stock & cut to your required dimensions!
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:
QT650 | QT780 | QT900 | |
Tensile strength | 650 - 830 N/mm2 (Rm) | 780 - 980 N/mm2 (Rm) | 900 - 1100 N/mm2 (Rm) |
Hardness according to Brinell | 192 - 242 HB | 245 - 309 HB | 285 - 346 HB |
Mechanical properties at room temperature: QT650
Re | A | Z | KV |
N/mm2 | % | % | J |
≥ 520 | ≥ 12 | ≥ 40 | ≥ 54 |
Mechanical properties at room temperature: QT780
Re | A | Z | KV |
N/mm2 | % | % | J |
≥ 635 | ≥ 15 | ≥ 40 | ≥ 50 |
Mechanical properties at room temperature: QT900
Re | A | Z | KV |
N/mm2 | % | % | J |
≥ 800 | ≥ 10 | ≥ 40 |
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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1.4313 F6NM - UNS S41500 | C | Si | Mn | P | S | Cr | Mo | Ni | V |
---|---|---|---|---|---|---|---|---|---|
min. | 12,0 | 0,4 | 3,5 | ||||||
max. | 0,05 | 0,6 | 1,0 | 0,035 | 0,015 | 14,0 | 0,7 | 4,5 |
1.4313 F6NM - UNS S41500 | Al | Cu | N | Nb | Ti | Sonstiges |
---|---|---|---|---|---|---|
min. | 0,02 | |||||
max. |
round, rolled / forged, quenched and tempered, machined oder peeled surface
flat, forged, quenched and tempered, pre-machined


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.
Wie ist die Zugfestigkeit von 1.4313? Die Zugfestigkeit kann je nach Eigenschaftszustand von 650 MPa bis über 1100 MPa variieren |
Bei welcher Temperatur kann man 1.4313 härten? 2. 1.4313 wird in den Temperaturgrenzen von 950 – 1050°C geglüht und anschließend durch schnelle Abkühlung mittels Luft, Öl, Polymer, Wasser gehärtet. |
Ist 1.4313 magnetisch? 1.4313 ist ein ferromagnetischer Werkstoff. |
Wie kann man 1.4313 vergüten? Man härtet als ersten Schritt den 1.4313 auf Martensitgefüge und vergütet anschließend mit Anlasstemperaturen über 500°C. |
Kann 1.4313 rosten? 1.4313 ist ein korrosionsbeständiger Werkstoff, kann jedoch unter bestimmten Umgebungseinflüssen auch rosten. |
Wie ist die Dichte von 1.4313? Die Dichte vom 1.4313 beträgt 7,70 bis 7,85 kg/cm², je nach genauer Zusammensetzung. |
Wie ist die Zerspanbarkeit von 1.4313? Die Bearbeitbarkeit variiert mit der gegebenen Härtestufe, kann aber als gut bezeichnet werden, wenn mit anderen hochlegierten Stählen verglichen wird. |
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We are happy to answer your questions and make you an offer for these and other materials. Contact us now for more information.

Your contact person Antje Schroeder+49 (0) 35263-665-13aschroeder@stahlportal.com
Notice: Specifications contained in following data sheet are provided as a description, liability is excluded!
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