Caldie is a matrix tool steel

Tool steel

Tool steel refers to a variety of carbon and alloy steels that are particularly well-suited to be made into tools. Their suitability comes from their distinctive hardness, resistance to abrasion, their ability to hold a cutting edge, and/or their resistance to deformation at elevated temperatures...

 manufactured by Uddeholms AB

Uddeholms AB

Uddeholms AB is a multinational producer of high alloyed tool steel with production in Hagfors, Sweden. Since 1991, the company is part of the Austrian Böhler-Uddeholm group which in turn is part of the voestalpine AG group since 2007. Uddeholms AB has 800 employees in Sweden...

 for cold work applications with high demands on chipping / cracking

Fracture

A fracture is the separation of an object or material into two, or more, pieces under the action of stress.The word fracture is often applied to bones of living creatures , or to crystals or crystalline materials, such as gemstones or metal...

 resistance and compressive strength. Uddeholm Caldie is a robust tool steel and is suitable for medium production volume tooling for blanking

Blanking and piercing

Blanking and piercing are shearing processes in which a punch and die are used to modify webs. The tooling and processes are the same between the two, only the terminology is different: in blanking the punched out piece is used and called a blank; in piercing the punched out piece is...

 and forming

Work hardening

Work hardening, also known as strain hardening or cold working, is the strengthening of a metal by plastic deformation. This strengthening occurs because of dislocation movements within the crystal structure of the material. Any material with a reasonably high melting point such as metals and...

 difficult production materials such as advanced high strength steel.

International standards comparison chart

Grade name	AISI American Iron and Steel Institute The American Iron and Steel Institute is an association of North American steel producers. Its predecessor organizations date back to 1855 making it one of the oldest trade associations in the United States. AISI assumed its present form in 1908, with Elbert H...  (USA)	BS4659 (GB)	W.-Nr. (Germany)	SS (Sweden)	JIS (Japan)
Caldie	-	-	-	-	-

Chemical composition

Grade name	C Carbon Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds...	Si Silicon Silicon is a chemical element with the symbol Si and atomic number 14. A tetravalent metalloid, it is less reactive than its chemical analog carbon, the nonmetal directly above it in the periodic table, but more reactive than germanium, the metalloid directly below it in the table...	Mn Manganese Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a free element in nature , and in many minerals...	Cr Chromium Chromium is a chemical element which has the symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-gray, lustrous, hard metal that takes a high polish and has a high melting point. It is also odorless, tasteless, and malleable...	Mo Molybdenum Molybdenum , is a Group 6 chemical element with the symbol Mo and atomic number 42. The name is from Neo-Latin Molybdaenum, from Ancient Greek , meaning lead, itself proposed as a loanword from Anatolian Luvian and Lydian languages, since its ores were confused with lead ores...	Ni Nickel Nickel is a chemical element with the chemical symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile...	V Vanadium Vanadium is a chemical element with the symbol V and atomic number 23. It is a hard, silvery gray, ductile and malleable transition metal. The formation of an oxide layer stabilizes the metal against oxidation. The element is found only in chemically combined form in nature...	S Sulfur Sulfur or sulphur is the chemical element with atomic number 16. In the periodic table it is represented by the symbol S. It is an abundant, multivalent non-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S8. Elemental sulfur is a bright yellow...
Caldie	0.7	0.2	0.5	5.0	2.3	-	0.5	-

Properties

Uddeholm Caldie is a chromium-molybdenumvanadium alloyed tool steel which is characterized by:

• Very good chipping and cracking resistance
• Good wear resistance
• High hardness (>60 HRC) after high temperature tempering
• Good dimensional stability in heat treatment and in service
• Excellent through-hardening properties
• Good machinability and grindability
• Excellent polishability
• Good surface treatment properties
• Good resistance to tempering back
• Very good WEDM properties

Application areas

Uddeholm Caldie is suitable for short to medium run tooling where chipping and/or cracking are the predominant failure mechanisms and where a high compressive strength

Compressive strength

Compressive strength is the capacity of a material or structure to withstand axially directed pushing forces. When the limit of compressive strength is reached, materials are crushed. Concrete can be made to have high compressive strength, e.g...

 (hardness of over 60 HRC) is necessary. This makes Uddeholm Caldie very suitable for severe cold work applications where the combination of a hardness above 60 HRC and a high cracking resistance is of utmost importance e.g. as in the blanking and forming of ultra high strength steel sheets. Uddeholm Caldie is also very suitable as a substrate steel for applications where surface coatings are desirable or necessary.

Cold Work applications

• Blanking applications where high ductility
  Ductility
  In materials science, ductility is a solid material's ability to deform under tensile stress; this is often characterized by the material's ability to be stretched into a wire. Malleability, a similar property, is a material's ability to deform under compressive stress; this is often characterized...
  
   and toughness
  Toughness
  In materials science and metallurgy, toughness is the ability of a material to absorb energy and plastically deform without fracturing; Material toughness is defined as the amount of energy per volume that a material can absorb before rupturing...
  
   are needed to prevent chipping/cracking
• Cold forging and forming operations where a high compressive strength
  Compressive strength
  Compressive strength is the capacity of a material or structure to withstand axially directed pushing forces. When the limit of compressive strength is reached, materials are crushed. Concrete can be made to have high compressive strength, e.g...
  
   combined with good resistance to chipping/cracking are necessary
• Machine knives
• Thread rolling dies
• Substrate for surface coatings

Engineering components and machine parts

This steel can be used in engineering applications where high compressive strength has to be combined with high ductility/toughness. Knives for fragmentation of plastics and metals and roll forming rolls are good examples

Other Uddeholm Cold Work Steels

Arne,
Calmax,
Rigor,
Sleipner,
Sverker 3,
Sverker 21

Sverker 21

Sverker 21 is a tool steel manufactured by Uddeholms AB. It is primarily used for Cold Work applications such as blanking, piercing, cropping, bending, forming and cutting.-International standards comparison chart:-Chemical composition:-Properties:...

,
Unimax,
Vanadis 4 Extra

Vanadis 4 Extra

Vanadis 4 Extra is a powder metallurgical cold work tool steel produced by Uddeholms AB. It is characterized by a combination of wear and chipping resistance and is particularly suitable for high volume production tooling for production materials such as annealed austenitic stainless steel, mild...

,
Vanadis 6,
Vanadis 10,
Vanadis 23,
Vancron 40,
UHB 11,
Formax,
Holdax,