Cold Work Mould Steel

Specification 1.High carton high chromium tool steel. 2.High wear resistance and toughness. 3.Offers a measure of corrosion resistar when polished. 4.Alternative to oil hardening tool steel. Chemical composition NAME C Si Mn P S Cr V 1.2842/O2 0.85~0.95 ,0.40 1.70~2.00 ,0.030 ,0.030 ---- 0.10~0.25 Similar grade GB AISI/ASTM DIN JIS 9Mn2V O2 1.2842 SKS31 PropertiesConditions T (°C)Treatment Density7.66 x 1000 kg/m325- Mechanical Properties The mechanical properties of O2 steels are tabulated below. Physical Properties Properties T (°C)Treatment Density 7.66 x 1000 kg/m3 25 Mechanical Properties Properties T (°C)Treatment Poisson's ratio 0.27-0.30 25- Elastic modulus 27557-30458 ksi 25 Thermal Properties Properties T (°C) Treatment Thermal expansion 11.2 x 10-6/ºC 20-100

1: It is a kind of High Carbon and High Chromium Cold Work Tool Steel which was maturely applied in the world. It belongs to the scope of ledeburitic steel. 2: It has very high hardenability and abrasive resistance, good oxidation resistance in high temperature, good resistance to rust after quenching and polishing, and low deformation of heat treatment. 3: Vacuum degassed, ladle refined, high cleaness. 4: Good machining property after softening process of spheroidizing. 5: With mixture of reinforced chemical element: Vanadium or Molybdenum, it has excellent abrasive resistance. Supplying Size: Round Bar: Dia. 60 C 600mm Flat Bar: Thickness : 16 C 600mm, Width: 60 C 800mm Delivery Condition: EAF / ESR, Hot Rolled /Hot Forged, Turned Surface /Black Surface, Annealed.

Performance Characteristics: Widely used cold work mould steel, with good quench-hardening ability, good wear resistance , as well hot workability. Applications: Making efficient blanking mould, stamping mould, all kinds of scissors , cold shearing , drilling bushing , gauge, wortle, coining die, thread rolling die, screw thread rolling die, cold extrusion dies . Chemical Composition : C 2.00¡«2.30 Si 0.40 Mn 0.40 S 0.030 P 0.030 Cr 11.50¡«13.00 Ni 0.25 Cu 0.30 Co 1.00 Heat treatment standard: (1) Quenching, 950 ~ 1000 centigrade cold oil; (2) Quenching 980 centigrade, cold oil, 180 centigrade tempering 2 hours Annealing temperature: 800-850 Centigrade. Annealing hardness: 248 HB Max. Destressing temperature: 650 Centigrade Approx. Hot forming temperature: 1050-850 Centigrade. Quenching temperature: 940-970 Centigrade. Hardening media: oil quenching, salt bath 220-250 Centigrade or 500-550 Centigrade, air or compressed air. Quenching hardness: 63-65 HRC. Delivery condition : Annealing. Under the client's requirement

Performance characteristics: Widely used cold work mould steel, belongs to ledebrite steel .Good hardenability and rigidity, excellent wear resistance; minimal distortion. Applications: Various tool & die, such as a variety of punching die, trimming die, steel tensile modulus, trim mold, drawing die, slot die, thread twistsilk panels, cold extrusion die, cold-cut scissors, circular saw blades, standard tools, measuring tools, etc. Chemical Composition (%): C 1.40~1.60 Si 0.60 Mn 0.60 Cr 11.00~13.00 V 1.10 Mo 0.70~1.20 Co 1.00 P 0.030 S: 0.030 Under the client's requirement.

Performance characteristics: Cold work mould steel, quench-hardening ability, the hardness of tempering, wear resistance and strength are better than cr12. Applications: All kinds of cold blunt mould and tools, such as punching concave die, trimming, roll mould, steel plates,deep drawing die, circular saws, standard tools and gauge, thread rolling mould and so on. Chemical Composition (%): C 1.45 1.70 Si 0.40 Mn 0.40 S 0.030 P 0.030 Cr 11.00 12.50 Ni 0.25 Cu 0.30 V 0.15 0.30 Mo 0.40 0.60 Heat Treatment Standard: 1) Quenching, 950 ~ 1000 centigrade cold oil 2) Quenching 1020 , 200 tempering 2 hours. Mechanical properties: Hardness: annealing, 255 ~ 207 HB, creasing diameter 3.8 ~ 4.2 mm; Quenching,more than or equal to 58 HRC Delivery status: Annealing. Under the client's requirement.

Performance Characteristics: 1, Good toughness; 2, High abrasive resistance; 3, High hardenability; 4, less deformation in quenching. Applications: 1. Suitable to make the punch dies or drawing dies which are complicated in shape and high in precision; 2. Suitable toHigh-speed punch head and cold forging dies; 3. Suitable to make the blanking dies and punching dies with a thickness. Chemical Composition (%): C 0.90/1.10 Mn 0.40 Si 0.80/1.20 Cr 7.50/8.50 P 0.025 S 0.020 Mo 1.80/2.0 V 0.20/0.50 Delivery Condition: Annealing. Under your requiremnet.

Performance characteristics: Vacuum deairing with fine steel, it is easy for cutting after quenching , high hardness, good abrasion resistance , dimension stability and minimal distortion. Applications: It is suitable for cutting tools, such as broach, filament hammer and gauge and complex shape of cold mould, plastic mould, precise screw, etc. Chemical Composition (%): C 0.85¡«0.95 Si 0.40 Mn 0.90¡«1.20 S 0.030 P 0.030 Cr 0.50¡«0.80 Ni 0.25 Cu 0.30 W 0.70¡«1.2 Heat Treatment Standard: Quenching, 800 ~ 830 centigrade cold oil. Forging: Oil quenching cold die has crack sensitivity,so it should not be quickly heated,it had better for a preheating in 650-750 centigrade .The temperature of forging is 1130-1150 centigrade, eventually temperature should be more than 800-850 centigrade, steel ingot take upper limit temperature.while blank forging take lower temperature. Delivery condition: Annealing. Under the client's requirement.