High-alloy X12CrNiMoV12-3, 1.4938 creep-resistant, oxidation for aviation and cosmonautics according to EN 2278, EN 10302, EN 10088-1 and EN 10269.

 

Standard Steel Grade
Chemical Composition %
C: Mn: Si: P: S: Cr: Mo: Ni: V: N:
EN
EN
X12CrNiMoV12-3 - X 12 CrNiMoV 12-3 - 1.4938 - 1.4933
0.08 - 0.15 0.4 - 0.9 <0.5 <0.025 <0.015 11.0 - 12.5 1.5 - 2.0 2.0 - 3.0 0.25 - 0.40 0.02 - 0.04
LW X12CrNiMo12 - X 12 CrNiMo 12 - 1.4939
0.08 - 0.13 0.5 - 0.9 <0.35 <0.025 <0.020 11.0 - 12.5 1.5 - 2.0 2.0 - 3.0 0.25 - 0.40 0.02 - 0.04
DIN X11CrNiMoN12 - X 11 CrNiMoN 12
0.08 - 0.15 0.4 - 0.9 <0.50 <0.025 <0.015 11.0 - 12.5 1.5 - 2.0 2.0 - 3.0 0.25 - 0.40 0.02 - 0.04
UNS
AMS
UNS S64152 - S 64152 - AMS 5718 - AMS 5719
0.08 - 0.15 0.5 - 0.9 <0.35 <0.025 <0.025 11.0 - 12.5 1.5 - 2.0 2.0 - 3.0 0.25 - 0.40 0.01 - 0.05
AFNOR Z12CNDV12-03 - Z 12 CNDV 12-03 - X13VD - X13V.D
0.08 - 0.15 0.5 - 0.9 <0.35 <0.030 <0.015 11.0 - 12.5 1.5 - 2.0 2.0 - 3.0 0.25 - 0.40 0.02 - 0.04
GB/T 10Cr12Ni3Mo2VN - S47250
0.08 - 0.13 0.5 - 0.9 <0.40 <0.030 <0.025 11.0 - 12.5 1.5 - 2.0 2.0 - 3.0 0.25 - 0.40 0.02 - 0.04

 

X12CrNiMoV12-3, 1.4938 - Description and specifications

X12CrNiMoV12-3 is a high-alloy chromium-nickel-molybdenum steel with the addition of vanadium for carburization with a martensitic structure, which due to high strength properties and significantly increased resistance to oxidation, is used for the production of aviation propellers, especially loaded gears, ball screws, responsible parts working at elevated temperatures such as rotors and turbine blades, bolts in the power industry, pump components as well as coupling parts in aircraft constructions.

Unique composition chemical composition ensures high hardenability, great nawęglonej layer parameters (hardness, toughness), and a clear reduction in deformations arising during heat treatment.


Mechanical properties of X12CrNiMoV12-3 +QT steel in heat-improved condition acc. to EN 10269:

  • Tensile strength, Rm: 930 - 1130 MPa
  • The yield point, Re: > 760 MPa
  • Elongation, A: >14%
  • Impact resistance, KV20℃: > 40 J
  • Contraction, Z: >40%
  • Hardness in softening annealed condition: ~250 HB

 


Steel heat treatment X12CrNiMoV12-3 - processes, temperature, cooling

  • Softening in the temperature of 660 - 690 ℃
  • Tempering in oil at temperatures of 1030 - 1060 ℃ with cooling to -65 ℃, after which tempering is carried out at a temperature of about 220 - 280 ℃
  • Hardening with air cooling in the temperature range of 1040 - 1060 ℃ with tempering at temperatures 600-700 ℃
  • Carburizing at temperatures around 950 ℃

 


The Virgamet company in the X12CrNiMoV12-3 grade and equivalents provides:

 


Other indications and equivalents of grade X12CrNiMoV12-3:

X 12 CrNiMoV 12-3, 1.4938, 1.4933, 4938, 4933, X12CrNiMo12, X 12 CrNiMo 12, 1.4939, X11CrNiMoN12, S 64152, S61452, AMS 5719, AMS 5718, Z12CNDV12-03, Z 12 CNDV 12-03, Z12CNDV12, EZ12CNDV12, X13V.D, X13VD, CX13VD, M152, S.151, 12Cr12Ni2Mo, 414MV, M-152, 10Cr12Ni3Mo2VN, 1Cr12Ni3Mo2VN, UNS K64152, XM-32.


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