Fusion TG Canada

  • 866.430.9660

    Free Call

  • 08:00 AM - 05:00 PM EST

    Monday - Friday

  • Online 24/7

    Sales@fusionsteel.com

Never overbuy steel again.
Let us cut it to your exact measurements!

Get Cutting Services

What Is 440C Steel?

440C is a high carbon stainless steel that is commonly used in the production of knife blades. It is a martensitic stainless steel, which means it is a type of stainless steel that is hardened and strengthened by heat treatment.

The "440" in 440C refers to the carbon content of the steel, which is around 1.0% carbon. This high carbon content gives the steel excellent hardness and wear resistance. The "C" in 440C stands for "chromium," which is the most important element in the steel's composition for providing corrosion resistance.

440C steel is highly regarded by knife makers and users for its hardness, sharpness, and ability to hold a keen edge. It is also known for its toughness and resistance to corrosion, making it a popular choice for knife blades that will be used in demanding applications.

AISI 440C UNS S44004/DIN X105CrMo17/1.4125
FusionTG Color Code Gold
Offered As Availability
Sheet Yes
Plate Yes
Cut Bar Yes
Blocks No
Rounds Yes
Forging No
Drill Rod No
Flat Ground Stock Yes - Upon Special Request
Typical Chemical Composition Minimum - Maximum Value
Carbon (C) 0.95-1.20%
Chromium (Cr) 16.00-18.00%
Manganese (Mn) 1.00% max
Silicon (Si) 1.00% max
Phosphorus (P) 0.040% max
Sulfur (S) 0.030% max
Nickel (Ni) 0.75% max
Molybdenum (Mo) 0.50% max
Maximum Rockwell C Hardness Obtainable 62 HRC
Supplied In Annealed Condition 229 BHN

440C steel is often used in the production of high-end knives, cutlery, and other cutting tools due to its excellent hardness, wear resistance, and ability to hold a sharp edge. In addition to knives and cutlery, some other typical applications of 440C steel include:

  • Bearings and bearing components: 440C's high hardness and corrosion resistance make it a popular choice for bearing components, such as balls and races.
  • Valve parts and components: 440C is sometimes used in the production of valve parts and components that are exposed to corrosive environments.
  • Surgical instruments: The high corrosion resistance of 440C makes it suitable for use in some surgical instruments.
  • Nozzles and pump parts: The wear resistance of 440C makes it a popular choice for nozzles and pump parts that are subjected to high stresses and wear.
  • Mold inserts: 440C's ability to maintain a sharp edge makes it a popular choice for mold inserts used in the plastic injection molding industry.

Not sure which steel grade is right for you? We can help!

Get Help
Direct-From-The-Mill Affordable Pricing
Expedited shipping means we deliver anywhere in Canada in 1-3 business days.
Durable and Reliable High-Grade Tool Steel