Fermo Steel

Fermo Steel

Steel name: Fermo
Diagram No.: 2758
Mat.No. (Wr.Nr.) designation: ~1.7140
Chemical composition in weight %: 0.48% C, 0.40% Si, 0.90% Mn, 1.50% Cr
Steel group: Alloyed steels
Properties: Uddeholm Fermo is a high strength, flameand induction hardening steel delivered prehardened to 250–290 HB. The surface of the steel can be flame hardened without water cooling. The hardened and tempered matrix provides good support for the flame hardened layer.
Applications: Blanking and forming tools for car body parts. Tool parts such as slides, pressure plates/ pads. Shear blades and circular knives with special requirements on toughness. Curve plates, cams. Guides, constructional parts. The steel is particularly suitable for tools with surfaces exposed to abrasion and which can be flame hardened.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Uddeholm Fermo is primarily intended for flame hardening. If ordinary heat treatment is required, the following directions can be followed:
• austenitizing temperature: 840–880°C (1540–1620°F), normally 860°C (1580°F)
• holding time: 20–30 minutes
Tempering: The tempering temperature according to the hardness required may be determined by means of the tempering graph. Temper twice. Lowest tempering temperature 180°C (360°F). Holding time at temperature minimum 2 hours.
Diagram note: No data.

Tempering Diagram

Price: 20.00 US $
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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

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