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
| Chemical composition (%) | |||||||||
| Steel Grade | W | Si (≤) | Mn (≤) | P (≤) | S (≤) | Ni (≤) | Cr | Mo | V |
| 9Cr18MoV (90Cr18MoV) |
0.85-0.95 | 0.80 | 0.80 | 0.04 | 0.03 | 0.60 | 5pm-7pm | 1h00-1h30 | 0.07-0.12 |
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)
| Equivalent material of 9Cr18MoV stainless steel | |||||||||||||
| China | USA | Germany | Japan | France | UK | ISO | |||||||
| Standard | Note | Standard | Note | Standard | Grade (steel number) | Standard | Note | Standard | Grade (steel number) | Standard | Grade (steel number) | Standard | Note |
| GB/T 1220 | 9Cr18MoV | AISI, ASTM A276/A276M |
440B, 440°C |
DIN EN 10088-3; DIN 17440, DIN 17222 |
X90CrMoV18 (1.4112) | JIS G4303 | SUS 440B | NF EN 10088-3 | X90CrMoV18 (1.4112) | EN 10088-3 | X90CrMoV18 (1.4112) | ||
