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Hongxin - Model GB/T 4Cr13 -Plastic Mold Steel for Tooling Applications
GB/T 4Cr13 is a martensitic stainless steel primarily used in the production of plastic molds and tooling components due to its high corrosion resistance, good polishability, and excellent wear resistance. The steel grade specifications include 1.2083, X40Cr14, SUS420J2, and 4Cr13, and it undergoes several heat treatments such as annealing, stress relieving, hardening, and tempering to achieve desired hardness and durability. The steel is processed using electric arc furnace (EAF), ladle furnace (LF), vacuum degassing (VD) techniques, and optionally forging to achieve the required mechanical properties. Customizable in size, GB/T 4Cr13 is available in round bars with diameters ranging from 12mm to 500mm and plates or blocks with thicknesses between 8mm and 300mm. Common quality tests include tensile strength, yield strength, elongation, hardness, and ultrasonic tests.4Cr13 is a type of stainless steel that is commonly used in the manufacturing of plastic molds and other tooling applications. It is known for its high corrosion resistance, good polishability, and excellent wear resistance. This material is often used in the production of injection molds, extrusion dies, and other precision tooling components.
- HONGXIN
- DAYE
- 30 DAYS
- 8000 TON/MONTH
- Steel Grade: 1.2083 /X40Cr14 / SUS420J2/ 4Cr13
General Information:
Stainless martensitic steel with a high hardenability, good polishing properties, excellent resistance to corrosion and hot oxidation.
- Heat treatment
Annealing:
-Heat to 750~800℃, with hold at minimum rate for 3 hours.
-Furnace cooling.
Stress relieving:
To be carried out after machining and before the final heat treatment.
Heating to 600~650°C for 2 hours.
Hardening:
Preheating to 600~700℃;
- Austenitizing at 990~1040℃
- Oil or thermal bath cooling at 500~550℃, then oil cooling according to the steel shape and size.
Quenched hardness: HRC 52~56
Tempering:
To be carried out after hardening according to the required hardness; at 170-270℃ in order to match hardness and resistance to corrosion; permanence for at least 2 hours;
Tempering must be repeated at least twice at a temperature 30 ℃ lower than the previous. Cooling in air.
Hongxin Mold Tech Co.,Ltd. owns 1 set of Hot Rolling Production Line at size range flats 8-80*210-710mm, rounds 16-50mm Dia.
12 sets of Hydraulic Forging Hammers from Power 560kgs to 6000kgs which could cover flats 40-300*210-710mm.
8 sets of EF+LF+VD
5 sets of ESR
9 sets of Milling Machines
10 sets of Turning Lathes
6 sets of Precision Milling Machines.