CTS-20CP

CTS-20CP is a steel made by Carpenter Steel and consists of:

Carbon

Chromium

Cobalt

Copper

Manganese

Molybdenium

Nickel

Nitrogen

Phosphorus

Silicon

Sulfur

Tungsten

Vanadium

2.20

13.00

/

/

0.50

1.30

/

/

/

0.90

/

/

9.30

Some information from the Spyderco website:

Carpenter specifically developed CTS-20CP as a blade tool steel. Its high vanadium content results in elevated corrosion-resistance and is manufactured with their proprietary Micro-Melt powdered steel technique. The Micro-Melt process enables the finished blade to be machined to an ultra-fine edge with superior surface finish.

CTS-20CP is Carpenter's version of Crucible's ever popular CPM-S90V and has been shown to offer almost identical performance in user testing.