A Comprehensive Guide to the Mechanical Properties of X6CrNiNb1811 Steel Grade

1. Chemical Composition:

– 탄소(C): 최대 0.08%
– 실리콘(Si): 최대 1.00%
– 망간(Mn): 최대 2.00%
– 인(P): 0.045% 최대
– 유황(S): 최대 0.015%
– 크롬(Cr): 16.0-18.0%
– 니켈(Ni): 10.0-14.0%
– Niobium (Nb): 0.7% max
– Nitrogen (N): 0.11% max

2. 기계적 성질:

– Tensile Strength: 485 MPa (70,300 psi) min
– Yield Strength: 170 MPa (24,700 psi) min
– 신율: 40% min
– Hardness: 217 HB max

3. 기술적 특성:

– Density: 7.99 g/cm3 (0.289 lb/in3)
– Melting Point: 1400-1450°C (2552-2642°F)
– Thermal Conductivity: 15 W/(m·K) at 20°C
– Electrical Resistivity: 0.73 μOhm·m at 20°C
– Modulus of Elasticity: 200 GPa (29,000 ksi)

X6CrNiNb1811 steel grade is a low carbon, niobium-stabilized austenitic stainless steel with good corrosion resistance and excellent mechanical properties. It is often used in chemical processing, food processing, and pharmaceutical equipment due to its resistance to intergranular corrosion and stress corrosion cracking. The addition of niobium improves the stability of the material against sensitization and weld decay, making it suitable for welding and forming processes. This comprehensive guide provides detailed information about the chemical composition, mechanical properties, and technical properties of X6CrNiNb1811 steel grade, making it a valuable resource for engineers, material scientists, and anyone working with this steel grade.