Martensitic stainless steel X3CrNiMo13-4, 1.4313, F6NM, UNS S41500 for thermal improvement in accordance with EN 10088-1, ASTM A240, ASME SA240.

 

StandardsSteel Grades
Chemical Composition %
C:Mn:Si:P:S:Cr:Ni:Mo:N:
EN1.4313 - X3CrNiMo13-4
<0.05<1.5<0.7<0.04<0.01512.0 - 14.03.5 - 4.50.3 - 0.7>0.02
ASTMUNS S41500 - F6NM - F 6NM - 13Cr-4Ni - F-6NM
<0.050.5 - 1.0<0.6<0.03<0.03011.5 - 14.03.5 - 5.50.5 - 1.0-
ASTMUNS J91540 - CA6NM - CA-6NM
<0.06<1.0<1.0<0.04<0.03011.5 - 14.03.5 - 4.50.4 - 1.0-
AFZ6CN13-04 - Z 6 CN 13-04
<0.06<1.0<0.75<0.04<0.01512.0 - 13.53.5 - 4.50.3 - 0.5-
BS425C11 - 425 C 11
<0.1<1.0<1.0<0.04<0.0311.5 - 13.53.4 - 4.2<0.6-
SNV
VSN
X5CrNi13-4 - X 5 CrNi 13-4
<0.07<1.5<1.00<0.035<0.02512.0 - 13.53.5 - 4.50.4 - 0.6-
JISSCS5 - SCS 5
<0.06<1.0<1.0<0.040<0.04011.0 - 14.03.5 - 4.5--

 

X13CrNiMo13-4, 1.4313 - specification and application

Stainless steel 1.4313 is a martensitic grade with high corrosion resistance, which exhibits good durability after good heat treatment.

The mechanical properties of X3CrNiMo13-4 steel are due to the high concentration of Molybdenum and Nickel in the chemical composition. These alloy additives have limited the need to increase the carbon content in the grade - a given concentration is comparable to stainless austenitic grade. The presence of nickel ~ 4% - although not at a high level, significantly increases the steel's resistance to numerous corrosive environments - secondary mechanical properties.

X3CrNiMo13-4 steel gives the user the ability to produce parts and components operating at temperatures up to about 300 ℃, and components exposed to numerous corrosive environments while maintaining adequate surface conditions - not including chloride resistance.

Type 1.4313 is delivered most often after heat improvement - in QT650, QT780 and QT900 conditions in the form of round bars. Semi-products are used to produce parts of turbines, pumps, compressors in the oil, chemical, metallurgical and energy industries exposed to high and low temperatures. Steel is not suitable for welding.


Mechanical properties of 1.4313, X3CrNiMo13-4 steel:

  • Delivery condition +A:
    • Tensile strength, Rm: <1100 MPa
    • HBW Hardness: <320
  • Delivery condition +QT650
    • Tensile strength, Rm: 700 - 850 MPa
    • Yield point, Re: >520 MPa
    • Elongation, A: > 15%
    • Impact resistance, KV: >70 J
  • Delivery condition +QT780
    • Tensile strength, Rm: 780 - 980 MPa
    • Yield point, Re: >620 MPa
    • Elongation, A: > 15%
    • Impact resistance, KV: >70 J
  • Delivery condition +QT900
    • Tensile strength, Rm: 900 - 1100 MPa
    • Yield point, Re: >800 MPa
    • Elongation, A: >12%
    • Impact resistance, KV: >50 J
  • Delivery condition +QT according to EN 10028-7
    • Tensile strength, Rm: 780 - 980 MPa
    • Yield point, Re: >650 MPa
    • Elongation, A: >14%
    • Impact resistance, KV: >70 J

 


Mechanical properties at elevated temperatures

PropertiesTemperatures
100℃150℃200℃250℃300℃350℃400℃
Yield point, Rp0,2 (MPa)+QT650>500>490>480>470>460>450-
+QT780>590>575>560>545>530>515-
+QT900>720>690>665>640>620--
+QT>590>575>560>545>530>515-
Modulus of elasticity, E (GPa)195-185-175-170
Linear Expansion Factor, α (* 10-6 K-1)10,5-10,9-11,3-11,6

 


Thermo-mechanical treatment - temperatures and cooling manner

  • Delivery condition +A- Annealing at 600 - 650 ℃ with cooling in the air or with the furnace
  • Delivery condition +QT650- Hardening at 950 - 1050 ℃ with cooling in oil or air, tempering at 650 - 700 ℃ + 600 - 620 ℃
  • Delivery condition +QT780- Hardening at 950 - 1050 ℃ with cooling in oil or air, tempering at 550 - 600 ℃
  • Delivery condition +QT900- Hardening at 950 - 1050 ℃ with cooling in oil or air, tempering at 520 - 580 ℃
  • Forging and rollingat 1150 °C with cooling in the air

 


In the above mentioned grades the company provides:

 


Other signs and equivalents:

X3CrNiMo13-4, 1.4313, X 3 CrNiMo 13-4, UNS S41500, F6NM, F 6NM, 13Cr-4Ni, UNS J91540, CA6NM, CA-6NM, Z6CN13-04, Z4CN13-4, 04Cr13Ni5Mo, 0Cr13Ni5Mo, 425C11, 425C12, C39NiH, C39NiL, T 8MoNiCr125, SS 2384, UNS S42400, NACE MR-01-75, SCS5, SCS 5, X5CrNi13-4, 0Ch12N4ML.


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