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Steel
Characteristics of materials,
Steel is a general-purpose steel for cold work dies with low hardenability and high carbon steel with a carbon mass fraction of above.
The advantages of this steel are good processability, high hardness and toughness, but low hardenability and large quenching deformation. Because steel contains few alloying elements, its tempering resistance is low, and its hardened layer is shallow, so its load-bearing capacity is low. It has high hardness and wear resistance, and is less sensitive to grain growth.
Delivery status
Hardness
Chemical composition
The main chemical composition (mass fraction) of the steel: ~.,.3,..
Reference corresponding grades
China B standard grade, China Taiwan standard grade, Japanese standard grade
, United States/standard grade-, American standard grade German standard grade, German standard material number., British B Standard grade, Russian гост standard grade у, French standard grade, French standard grade, Korean standard grade International Standards Organization standard grade.
Critical point temperature (approximate value)
℃,
℃, r
℃.
Ordinary annealing specifications
Annealing temperature ~℃, heat preservation ~, and then slowly cooled in the furnace to ~℃ at a cooling rate of <3℃/, and then air-cooled out of the furnace.
Isothermal spheroidizing annealing specifications
) ~℃~~℃~ and then cooled to ~℃ in the furnace, air-cooled out of the furnace, hardness B.
)～℃～～℃～3 hardness 3～B, pearlite structure～grade.
Conditioning and holding treatment specifications
Quenching temperature ~ ℃, oil cooling, tempering temperature ~ ℃, insulation ~ 3, hardness 3 ~ B.
Quenching and tempering specifications
Quenching temperature ~ ℃, water cooling, water-oil double liquid cooling or alkali bath cooling, hardness, tempering temperature ℃.
Typical application examples
) It is suitable for making tools that are not subject to severe impact and have high hardness and are patiently ground, such as scrapers, dies, etc.
) Suitable for various small and medium-sized production batch molds and impact load-resistant molds.
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