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

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

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