DIN 1.2738 is specially used for Plastic injection die moulds. The characteristics of a material are right sharpening, photo-etching properties with high purity and good homogeneity. DIN 2738 is upgraded version of plastic mold steel 0f 2311, which normally supply in Pre hardened condition. Hardness in as supplied condition 280-320 HB with having uniform hardness. The additional nickel content of 1 % increases through hardening. It has good machinability, suitable for Texturing, fine polishability, adequate corrosion resistance, vacuum-degassed steel.
DIN 2738 is a premium mold steel that offers excellent polishability, wear resistance, and toughness, making it ideal for a wide range of tooling applications. DIN 2738 is a specially designed mold steel with improved toughness and excellent machinability compared to standard P20 grades.
DIN 1.2738 is a widely used cold work steel, especially in the plastic mold industry. It is equivalent to P20+Ni and AISI P20+Ni tool steel. DIN 2738 steels have superior polishability compared to 1.2312 (AISI P20+S) and better machinability. To enhance the hardness and wearability of the mould surface material , it can be treated with nitrogenation and flame hardening. DIN 2738 steel is melted in an electrical furnace and refined using a VOD or DH equipment.
Chemical Composition:
DIN 2738: Carbon (C): 0.35-0.45%, Manganese (Mn): 1.30-1.60%, Silicon (Si): 0.20-0.40%, Phosphorus (P): ≤ 0.030%, Sulfur (S): ≤ 0.030%, Chromium (Cr): 1.80-2.10%, Nickel (Ni): 0.90-1.20%, Molybdenum (Mo): 0.15-0.25%
P20+Ni: Carbon (C): 0.28-0.40%, Manganese (Mn): 0.60-1.00%, Silicon (Si): 0.20-0.80%, Phosphorus (P): ≤ 0.030%, Sulfur (S): ≤ 0.030%, Chromium (Cr): 1.40-2.00%, Nickel (Ni): 0.80-1.20%
Mechanical Properties:
DIN 2738:
Tensile Strength: 980-1180 MPa
Yield Strength: ≥ 800 MPa
Elongation: ≥ 15%
Hardness: 280-325 HB
P20+Ni:
Tensile Strength: 1050-1250 MPa
Yield Strength: ≥ 900 MPa
Elongation: ≥ 12%
Hardness: 280-325 HB
Physical Properties:
Density: DIN 2738 and P20+Ni have a density of approximately 7.85 g/cm³.
Thermal Conductivity: The thermal conductivity of these steels is around 30-35 W/(m·K).
Specific Heat Capacity: The specific heat capacity is about 460-480 J/(kg·K).
Thermal Expansion: The linear coefficient of thermal expansion is approximately 11-12 x 10^-6 /K.
Application:
DIN 2738 is applicable for large & small plastic mould dies for Automotive Industries, Dies for Domestic goods , High finishing plastic Die, Boaster Plates of Presses, Die Holders & Shoe blocks for drop Hammers, Press Cassettes , Upsetter Blocker, forging dies, Different dies & mold for plastic products etc.
At Virat Special Steels, we provide DIN 2738 in round bar and flat bar blocks in different sizes and conditions to meet your specific requirements. Our team of experts is ready to assist you with any queries you have about DIN 2738 steel.
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