Carmo Steel

Carmo Steel

Steel name: Carmo
Diagram No.: 2756
Mat.No. (Wr.Nr.) designation: 1.2358
Chemical composition in weight %: 0.60% C, 0.35% Si, 0.80% Mn, 4.50% Cr, 0.50% Mo, 0.20% V
Steel group: Cold work tool steels
Properties: Carmo is a high-strength, surface- and through hardening steel delivered prehardened to 240–270 HB.
Applications: Carmo is a cold work tool steel which has been developed together with the automotive industry. Its property profile has been balanced to give one universal tool steel for car body dies instead of the several steel grades (surface hardening and through hardening grades) which are normally used. The steel can be used in the surface hardened or in the through-hardened condition for blanking and forming of both car body parts (thin sheet) or structural parts (thicker sheet).
Reference: Not shown in this demo version.

Heat Treatment
Hardening: For through hardening following temperatures and times are recommended: Pre-heating temperature: 600–700°C (1110– 1290°F). Austenitizing temperature: 950–970°C (1740– 1780°F), normally 960°C (1760°F). Holding time: 30–45 minutes.
Quenching media: Forced air/gas. Vacuum furnace with sufficient overpressure. Martempering bath or fluidized bed at 200–550°C (320–1020°F) followed by forced air cooling. Oil.
Tempering: The tempering temperature for the required hardness may be determined by means of the tempering graph. Temper twice. Lowest tempering temperature 200°C (390°F). Holding time at temperature minimum 2 hours.
Diagram note: No data.

Tempering Diagram

Price: 20.00 US $
Buy Online Tempering Diagram

Other Steel Data links
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Diagrams of Steels
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants

Disclaimer: The material data is a central depository of information based on global actual tests and calculated software data that is available to the public for a fee. The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.