What material is 14MoV63?
14MoV63 is a low-alloy heat-resistant steel, corresponding to the Chinese material standard 15CrMoR. It is a German DIN standard steel grade, also known as 1.7715 steel (according to the German steel designation system). Its chemical composition includes 0.10-0.17% carbon, 0.30-0.60% silicon, 0.30-0.60% manganese, 0.025% phosphorus, 0.025% sulfur, 3.00-3.50% chromium, 0.25-0.50% molybdenum, 0.15-0.30% vanadium, up to 0.20% copper, and up to 0.03% nitrogen. This steel grade exhibits excellent oxidation resistance, creep resistance, and high-temperature strength at elevated temperatures.
14MoV63 Seamless Tubes of Heat-resistant Steels Chemistry Composition
14MoV63 Seamless Tubes of Heat-resistant Steels Mechanical Properties
Outside Diameter & Tolerance
Wall thickness & Tolerance
The mechanical properties of 14MoV6-3 can be optimized through heat treatment processes, commonly including normalizing + tempering (NT) or quenching + tempering (QT). The specific processes are as follows:
Normalizing or Quenching: Heating to 950°C - 990°C, followed by air cooling or oil cooling.
Tempering: Conducted at 670°C - 720°C, with cooling performed by air or furnace cooling.
After heat treatment, this steel grade achieves a uniform sorbite or bainite microstructure, resulting in high tensile strength, yield strength, and fatigue strength while maintaining a low brittle transition temperature. Its typical mechanical properties include:
High-Temperature Strength: Maintains good strength in environments of 500°C - 600°C.
Toughness: Excellent impact toughness, making it suitable for pressure-containing components.
Creep Resistance: Suitable for long-term operation under high-temperature and high-pressure conditions.
Test and inspection
Packaging and shipping
