Stainless Steel 9Cr18MoV Specifications

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-carbon parts. wear.

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

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

Datasheet and specifications

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

(90Cr18MoV) Chemical Composition of 9Cr18MoV Steel

Mechanical Properties of 9Cr18MoV Stainless Steel

• Material hardness 9Cr18MoV: ≥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°C
• Thermal conductivity (W/m·K): 29.3 at 100°C
• Linear thermal expansion coefficients (10 ^-6 /K):
  • 10.5 (0-100°C)
  • 12.0 (0-500°C)
• Electrical Resistivity (μΩ·m): 0.65 at 20℃
• Longitudinal modulus of elasticity (kN/mm2): 211 to 20°C

Typical heat treatment specification

For steel bar

• Annealing: 800 – 920 ℃ (slow cooling)
• Quenching: 1050 – 1075 ℃ (oil cooling)
• Quenching: 100 – 200 ℃ (air cooling)

Equivalent Material

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