What is the hardness of 440C?

58–60 HRC
Unsourced material may be challenged and removed. 440C (UNS designation S44004) is a martensitic 400 series stainless steel, and is the highest carbon content from 400 stainless steel series. It is usually heat treated to reach hardness of 58–60 HRC.

IS 440C strong?

Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys.

How hard is 440 stainless?

440 steel has a Rockwell hardness of 58, which is considered quite hard. For comparison, hard steels used for blade edges have a hardness of 60, so it is clear that 440 steel is quite resilient to surface deformation.

Is 440 steel good for a knife?

440C Steel: This steel has a carbon content range between . 95% to 1.20% and is generally considered higher-end steel. It’s prevalent in knives because it provides a good mixture of hardness and corrosion resistance and isn’t terribly expensive.

What does the C stand for in 440C stainless steel?

Introduction. Grade 440C stainless steels are high carbon steels, which attain the highest hardness, wear resistance and strength of all stainless steel grades after heat treatment.

IS 440C stainless?

Stainless 440C is a high-carbon martensitic stainless steel. As a martensitic stainless steel, 440C is magnetic and can be hardened by heat treatment. The high carbon content in 440C provides high hardness and strength.

How hard is 440C steel to sharpen?

It is rated at 58-60 on the Rockwell Hardness scale. The same scale lists the qualities of 440C steel as a,” high chromium stainless steel which exhibits an excellent balance of hardness and corrosion resistance. This steel takes a nice edge, and is fairly easy to sharpen even for a novice.”

Does 440C steel rust?

440C is only marginally rust resistant. It you want solid rust resistance, look at 302 or 316 stainless. It may still discolor but you shouldn’t see much if any red rust..

IS 440C steel easy to sharpen?

IS 440C steel tough?

Corrosion resistant- 440C steel is highly resistant to corrosion with only a minimum of care needed to protect the blade from rust. Toughness – 440C steel is proven to be very tough. It has high wear resistance which is important if the knife is used in an outdoor environment.

IS 440C stainless steel?

Does 440C hold an edge?

Sharpness – Many knife makers say a 440C blade will take the sharpest edge and hold it the longest over any of the other blade materials. It is rated at 58-60 on the Rockwell Hardness scale.

Is 440C steel good for knives?

The same scale lists the qualities of 440C steel as a,” high chromium stainless steel which exhibits an excellent balance of hardness and corrosion resistance. This steel takes a nice edge, and is fairly easy to sharpen even for a novice.” Negativity toward 440C knife blades.

What is the corrosion resistance of 440C steel?

440c steel has moderate corrosion resistance when compared to other stainless steels, and it exhibits its best corrosion resistance in its hardened and tempered form. However, care must be taken to avoid over-tempering, which results in a decline in its corrosion resistance. Table 1. Properties of annealed 440c stainless steel [2]

What is annealed 440C stainless steel?

Table 1. Properties of annealed 440c stainless steel [2] 440c stainless steel is martensitic, which implies that it is hardenable by heat treatment. The general goal of the heat treatment of 440c stainless steel is to limit, as much as possible, the amount of austenite in the steel and promote the creation of martensite [3].

What is heat treatment of 440C stainless steel?

Heat treatment of 440c stainless steel 440c stainless steel is martensitic, which implies that it is hardenable by heat treatment. The general goal of the heat treatment of 440c stainless steel is to limit, as much as possible, the amount of austenite in the steel and promote the creation of martensite.