25CrMo4 KB Steel Grade: The Secret Ingredient for Lightweight and Strong Components

25CrMo4 KB Steel Grade: The Secret Ingredient for Lightweight and Strong Components

1. 사양 :
– Material: 25CrMo4 KB Steel Grade
– Purpose: Lightweight and Strong Components

2. 기계적 성질:
– Ultimate Tensile Strength: 700-900 MPa
– Yield Strength: 550-750 MPa
– Elongation: 15-25%
– Impact Toughness: ≥ 100 J
– Hardness: 197-241 HB

3. 기술적 특성:
– Density: 7.85 g/cm³
– Modulus of Elasticity: 207 GPa
– Thermal Conductivity: 46.6 W/m·K
– Coefficient of Thermal Expansion: 10.6 x 10^-6/K
– Electrical Conductivity: 2.16 MS/m

4. 화학 성분:
– 탄소(C): 0.22-0.29%
– 실리콘(Si): 0.15-0.35%
– 망간(Mn): 0.60-0.90%
– 인(P): ≤ 0.035%
– 유황(S): ≤ 0.035%
– 크롬(Cr): 0.90-1.20%
– 몰리브덴(Mo): 0.15-0.30%
– Nickel (Ni): ≤ 0.30%
– 구리(Cu): ≤ 0.30%

In summary, 25CrMo4 KB Steel Grade is a steel material with excellent mechanical properties, including high tensile and yield strength, good elongation and impact toughness. It also possesses desirable technical properties, such as moderate density, high modulus of elasticity, and good thermal and electrical conductivity. Its chemical composition, including the presence of chromium and molybdenum, contributes to its lightweight and strong characteristics, making it an ideal choice for components that require both strength and lightweight design.