(90Cr18MoV) 9Cr18MoV Stainless Steel Equivalent, Chemical Composition, Mechanical Properties

9Cr18MoV Steel

9Cr18MoV stainless steel is a high carbon martensitic stainless steel, and mainly used to manufacture parts that resist strong friction and work in corrosive media, such as stainless steel blades, mechanical cutting tools, surgical blades, measuring tools, and other high-wear parts.

The performance and use of 9Cr18MoV steel (90Cr18MoV) is similar to 9Cr18. Due to the addition of molybdenum (Mo) and vanadium (V), the thermal strength and tempering resistance are better than 9Cr18 steel.

9Cr18MoV (old name) = 90Cr18MoV (new name)

Datasheet & Specification

The following tables list the 9Cr18MoV datasheet such as chemical composition and mechanical properties, etc.

(90Cr18MoV) 9Cr18MoV Steel Chemical Composition

Mechanical Properties of 9Cr18MoV Stainless Steel

• 9Cr18MoV material hardness: ≥55 HRC (Quenched and tempered);
• Material hardness: ≤269 HBW (Annealed)

Physical Properties

• Density (g/cm3): 7.70
• Specific heat capacity (J/Kg·K): 460 at 0-100℃
• Thermal conductivity (W/m·K): 29.3 at 100℃
• Coefficients of linear thermal expansion (10^-6/K):
  • 10.5 (0-100℃)
  • 12.0 (0-500℃)
• Electrical Resistivity (μΩ·m): 0.65 at 20℃
• Longitudinal modulus of elasticity (kN/mm2): 211 at 20℃

Typical Heat Treatment Specification

For steel bar

• Annealing: 800 – 920 ℃ (Slow cooling)
• Quenching: 1050 – 1075 ℃ (Oil cooling)
• Tempering: 100 – 200 ℃ (Air cooling)

Equivalent Material

9Cr18MoV steel equivalent to US ASTM AISI SAE, European Germany DIN, British BS, France NF, Japanese JIS, and ISO standard. (for reference)