440C/9Cr18 Stainless Steel Plate
Grade: 440C/9Cr18
Thickness: 3.0mm-200mm
Width: 1.5m/2.0m/2.2m or as client’s requirement.
Standard: ASTM A240/A240M, JIS G4304, JISG 4305, EN 10088/3
Finish: No.1, Polished
- Fast Shipping / Ready Stock
- ISO 9001 Direct Factory
- Custom Cutting & Processing
- 100% MTC & SGS Inspection Supported
440C (9Cr18) is a high-carbon martensitic stainless steel with excellent hardness, wear resistance, and good corrosion resistance. After heat treatment, it can achieve very high hardness and strength, making it suitable for applications requiring sharp edges, abrasion resistance, and dimensional stability.
Chemical Composition (Typical wt.%)
| Element | Value |
| Carbon (C) | 0.95-1.20 |
| Chromium (Cr) | 16.00-18.00 |
| Manganese (Mn) | ≤1.00 |
| Silicon (Si) | ≤1.00 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical Condition)
| Property | Value |
| Tensile Strength | ≥760 MPa |
| Hardness | 58-60 HRC (typical heat treated) |
| Elongation | ≥2% |
- Knife blades
- Bearings
- Cutting tools
- Wear-resistant components


440C (9Cr18) is a high-carbon martensitic stainless steel with excellent hardness, wear resistance, and good corrosion resistance. After heat treatment, it can achieve very high hardness and strength, making it suitable for applications requiring sharp edges, abrasion resistance, and dimensional stability.
Chemical Composition (Typical wt.%)
| Element | Value |
| Carbon (C) | 0.95-1.20 |
| Chromium (Cr) | 16.00-18.00 |
| Manganese (Mn) | ≤1.00 |
| Silicon (Si) | ≤1.00 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical Condition)
| Property | Value |
| Tensile Strength | ≥760 MPa |
| Hardness | 58-60 HRC (typical heat treated) |
| Elongation | ≥2% |
- Knife blades
- Bearings
- Cutting tools
- Wear-resistant components






