Martensitic steel X4CrNiCuMo14-5
2026-08-04 09:11:37 Origin： Remark：0 Click：
X4CrNiCuMo14-5 displays an excellent material for last-stage turbine blades, where high mechanical strength, good fatigue resistance, and reliable performance at elevated temperatures are critical
X4CrNiCuMo14-5 is designated as a martensitic stainless steel and also known as S145, 1.4594 or FV520B (precipitation hardening) stainless steel. It is widely used in high-stress applications, such as turbine blades, due to its excellent combination of mechanical properties, corrosion resistance, and heat treatability.
Steel X4CrNiCuMo14-5 displays an excellent material for last-stage turbine blades, where high mechanical strength, good fatigue resistance, and reliable performance at elevated temperatures are critical.
Its corrosion resistance also makes it suitable for the harsh, high-moisture environment typical of steam turbines.
These properties make it a preferred choice for high-performance turbine applications where material reliability and longevity are paramount.
Stock available: round bar, flat bar
Material category: precipitation hardening stainless steel
Material specification: ATM1230048, DIN EN 10088-1
TYPICAL APPLICATIONS
Moving blade pins
Chemical equipment & parts
Mechanical parts used in the condition of corrosion resistance
Bolts and nuts for industry purpose
Mechanical parts used in the condition of corrosion resistance
Bolts and nuts for industry purpose
Industrial fan blades and blowers
Steam and gas turbine components
Compressors, rotors, shafts, and gears
High-stress structural aerospace and marine parts
Typical chemical compositions (mass weight - %)
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 0.50
Manganese, Mn (％): 0.30 ~ 0.80
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 13.0 ~ 15.0
Nickel, Ni (％): 5.00 ~ 6.00
Molybdenum, Mo (％): 1.20 ~ 2.00
Copper, Cu (％): 1.40 ~ 2.10
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 0.50
Manganese, Mn (％): 0.30 ~ 0.80
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 13.0 ~ 15.0
Nickel, Ni (％): 5.00 ~ 6.00
Molybdenum, Mo (％): 1.20 ~ 2.00
Copper, Cu (％): 1.40 ~ 2.10
Niobium, Nb (%): 0.15 ~ 0.30
MECHANICAL PROPERTIES UNDER AMBIENT TEMP.
Condition: double overaged,1020 ℃ +2 hours 750 / 850 ºC,+2 hours 590 / 620 ºC
Proof stress (N/mm²): 800
Tensile strength, Rm / MPa: 900
Yield strength, Rp0.2 / MPa: 700 ~ 880
Elongation, A5 (％): 15.0 Min.
Yield strength, Rp0.2 / MPa: 700 ~ 880
Elongation, A5 (％): 15.0 Min.
Hardness | HB: 277 ~ 321
Impact strength, Akv / Min.: 90J
Steel density: 7.80kg / dm
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers - E-mail: sales@ccsteels.com
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers - E-mail: sales@ccsteels.com
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