High carbon martensitic stainless steel plates EN 10088-2, DIN 1.4125, 1.4112, 1.4109

Stainless Steel Alloy 440

Type 440 Stainless Steel, as known as “razor blade steel,” is a hardenable high-carbon chromium steel.

When put under heat treatment it attains the highest hardness levels of any grade of stainless steel.

Type 440 Stainless Steel, which comes in four different grades, 440A, 440B, 440C, 440F, offers good corrosion resistance along with abrasion resistance. All grades can be easily machined in their annealed state, they also offer resistance to

mild acids, alkalis, foods, fresh water, and air. Type 440 can be hardened to Rockwell 58 harness.

Thanks to each grades outstanding properties, all grades of Type 440 Stainless Steel can be found in a number of different products including:

* Pivot pins

* Dental and surgical instruments

* High quality knife blades

* Valve seats

* Nozzles

* Oil pumps

* Rolling element bearings

Each grade of Type 440 Stainless Steel is made up of a unique chemical composition. It should be noted that the only

major difference between the grades is the level of Carbon

Type AISI 440A, W.-Nr. 1.4109 ( DIN X70CrMo15 )

Cr 16.00-18.00%

Mn 1.00%

Si   1.00%

Mo 0.75%

P 0.04%

S 0.03%

C 0.60-0.75%

Type AISI 440B, W.-Nr. 1.4112 ( DIN X90CrMoV18 )

C 0.75-0.95%

Type AISI 440C, W.-Nr. 1.4125 ( DIN X105CrMo17 )

C 0.95-1.20%

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