Which material is better, 440c or d2

D2 is an alloy tool steel CR12MOV, and the maximum quenching hardness is higher. 440C is martensitic stainless steel 9Cr18, which has a slightly lower hardness but good rust resistance. Theoretically, it would be better to use D2 for a knife, but D2 is a steel that will rust, while 440C is stainless steel, and the two are not comparable.

One is stainless steel and the other is die steel, the performance and use are not the same, and there is no comparison.

440C (9Cr18Mo) stainless steel is a high-carbon, high-chromium martensitic type stainless steel. The carbon content is in, and the chromium content is 17%.

Scope of application: It is mainly used to manufacture bearing parts that work in corrosive environments and non-lubricated strong oxidation atmospheres. 440C has good high-temperature dimensional stability, so it can also be used as corrosion-resistant high-temperature bearing steel.

In addition, it can also be used to manufacture high-quality knives, such as medical scalpels, scissors, nozzles, bearings, etc. 440C has a lower capacity to withstand dynamic loads.

D2 (CR12MOV) cold work die steel, the hardenability, hardness, wear resistance and strength of quenching and tempering are higher than those of CR12. All kinds of cold stamping dies and tools under complex shapes and heavy working conditions, such as punching dies, trimming dies, hemming dies, steel plate deep drawing dies, circular saws, standard tools and gauges, thread rolling dies, etc.

Shanghai Bingzhengshi Owner: non-ferrous alloy metal materials, nickel-based superalloys, nickel-based corrosion-resistant alloys, precision alloys, nickel-based alloys, Hastelloy, Stellite alloys, Monel alloys, special stainless steels, copper alloys, etc.!

Dude, do you make knives?

D2 is alloy tool steel CR12MOV, the maximum quenching hardness is higher 440C, and it is martensitic stainless steel 9CR18

The hardness is slightly lower, but the rust resistance is good.

All things considered, I think 440C is a little better, the hardness is slightly lower, but it is sufficient, the rust resistance is good, and it is more convenient.

Hello is stainless steel, 440C surface bright.

Steel for surgical scalpels.

This steel does not have excellent cutting properties in any effective hardness range and tends to be brittle at higher hardnesses. When 440C is hard enough to give the edge a decent retention, it becomes almost unsharp. That is, a 440C steel knife either has very poor retention; Either the overall strength is so low that you can't grind it back.

Its chemical composition is as follows:

Carbon C Silicon Si:

Manganese mn:

Sulfur s:

Phosphorus p:

Chromium-nickel ni: Allowed to contain

440C steel is a martensitic type stainless steel with a carbon content of 16-18% chromium. It has strong rust resistance and is a high-quality stainless steel.

It's a very, very, very, very good material.

440C stainless steel is a hardenable stainless steel, which has higher quenching hardness than 420, has high strength and hardness in the quenching and tempering state, and has stainless corrosion resistance.

440C Stainless Steel Chemical Composition:

Carbon C Silicon Si:

Manganese Mn: Phosphorus P:

Sulfur S: Chromium Cr:

Nickel ni: Charge and add

Molybdenum mo: Allowed to add

440C stainless steel application field: mainly used to make nozzles, bearings, etc.