1.4313, X3CrNiMo13-4, F6NM, S41500

November 21, 2024 | Tags: X3CrNiMo13-4, F6NM, S41500, 415, 1.4313,
1.4313, X3CrNiMo13-4
1.4313, X3CrNiMo13-4

1.4313, X3CrNiMo13-4, F6NM, UNS S41500, AISI 415 Forged or Rolled Alloy and Martensitic stainless steel, in accordance with ASTM A182/A182M, EN 10088-1, ASTM A240, ASME SA240.

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What is 1.4313, X3CrNiMo13-4 grade steel?

Martensitic stainless steel 1.4313, X3CrNiMo13-4, F6NM, UNS S41500, AISI 415 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. 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.

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Chemical Composition

GradeChemical Composition %
CMnSiPSCrNiMoN
EN 1.4313, X3CrNiMo13-4Max 0.05Max 1.5Max 0.7Max 0.04Max 0.01512.0 - 14.03.5 - 4.50.3 - 0.7>0.02
ASTM UNS S41500, F6NM, F 6NM, AISI 415Max 0.050.5 - 1.0Max 0.6Max 0.03Max 0.03011.5 - 14.03.5 - 5.50.5 - 1.0-
ASTM UNS J91540, CA6NM, CA-6NMMax 0.06Max 1.0Max 1.0Max 0.04Max 0.03011.5 - 14.03.5 - 4.50.4 - 1.0-
AF Z6CN13-04, Z 6 CN 13-04Max 0.06Max 1.0Max 0.75Max 0.04Max 0.01512.0 - 13.53.5 - 4.50.3 - 0.5-
B.S. 425C11, 425 C 11Max 0.1Max 1.0Max 1.0Max 0.04Max 0.0311.5 - 13.53.4 - 4.2Max 0.6-
JIS SCS5, SCS 5Max 0.06Max 1.0Max 1.0Max 0.040Max 0.04011.0 - 14.03.5 - 4.5--


Mechanical Properties

Annealed condition +A

  • for dimensions Min  16mm 
    • Tensile strength, Rm: <1100 MPa
    • Hardness, HB: <320
  • for dimensions Min  16mm 
    • Tensile strength, Rm: <1150 MPa
    • Hardness, HB: <380

Heat-treated condition +QT760 for bars

  • Tensile strength, Rm: 760 - 960 MPa
  • The yield point, Re: Min  550 MPa
  • Elongation, A:Min  16%
  • Impact resistance for dimensions KV20℃: Min 70J

Heat-treated condition +QT900 for bars

  • Tensile strength, Rm: 900 - 1150 MPa
  • The yield point, Re: Min  700 MPa
  • Elongation, A:Min  10%
  • Impact resistance for dimensions KV20℃: Min 60J

Heat-treated condition +QT840 for bars

  • Tensile strength, Rm: 840 - 1100 MPa
  • The yield point, Re: Min  660 MPa
  • Elongation, A:Min  14%
  • Impact resistance for dimensions KV20℃: Min 55J

Other mechanical and physical properties

  • Modulus of elasticity, E = 200 GPa
  • Thermal capacity, c-1
  • Thermal conductivity, λ = 15 W * m-1
  • Specific resistance, Ω: 0,8 mkOhm * m

Mechanical properties at elevated temperatures of X4CrNiMo16-5-1, 1.4418, Z8CND17-04

PropertiesTemperature
100℃150℃200℃250℃300℃350℃400℃
p0,2 (MPa)+QT760Min 520Min 510Min 500Min 490Min 480--
+QT900Min 660Min 640Min 620Min 600Min 580--
+QT840Min 660Min 640Min 620Min 600Min 580--
Modulus of elasticity, E (GPa)195-185-175-170
-1)10,3-10,8-11,2-11,6

Mechanical properties at elevated temperatures of X4CrNiMo16-5-1, 1.4418, Z8CND17-04

PropertiesTemperature
100℃150℃200℃250℃300℃350℃400℃
p0,2 (MPa)+QT760Min 520Min 510Min 500Min 490Min 480--
+QT900Min 660Min 640Min 620Min 600Min 580--
+QT840Min 660Min 640Min 620Min 600Min 580--
Modulus of elasticity, E (GPa)195-185-175-170
-110,3-10,8-11,2-11,6


Physical Properties

density (kg/dm3)  7.70

electrical resistivity at 20 °C (Ω mm2/m)  0.70

magnetizability  yes

thermal conductivity at 20 °C (W/m K)  15

specific heat capacity at 20 °C (J/kg K)  430

thermal expansion (K-1) :

  • 20 – 100 °C: 10.8 x 10-6
  • 20 – 200 °C: 10.8 x 10-6
  • 20 – 300 °C: 11.2 x 10-6
  • 20 – 400 °C: 11.6 x 10-6

Heat Treatment

  • Delivery condition +A- Annealing at 600 - 650 ℃ AC
  • 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 AC

Welding Properties

Good weldability, 1.4313, X3CrNiMo13-4, F6NM, UNS S41500, AISI 415 is readily weldable using all standard welding techniques. Care must however be taken to ensure that hydrogen or carbon containing gasses are not used when welding under shielded gas. Pre-heating of the work piece to a temperature between 100°C and 200°C is recommended. After welding, the weldment should either be annealed or tempered, as described before. If a filler material is required, then either a matching filler or Novonit® 4430 should be used.

Machining Properties

The machinability of this grade of stainless steel is directly related to its hardness. 1.4313, X3CrNiMo13-4, F6NM, UNS S41500, AISI 415 machines similar to carbon steels of the same hardness. Although it must be realised that the machining parameters will vary depending on the heat treated condition and hardness of the steel

What is 1.4313, X3CrNiMo13-4 equivalent to?

1.4313, X3CrNiMo13-4, F6NM, UNS S41500, AISI 415

Our provides:

Round Bars

Hot rolled coils & plates

Cold rolled coils and sheets

Square-bars

Flat bars

Hollow bars

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