Din 2738 Plastic Mould Steel

Product Description

Din Plastic Mould Steel Chemical Composition - (Typical Analysis in %)

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STANDARDS

P20+Ni

DIN

40CrMnNiMo8-6-4

AISI P20+Ni

C

Si

Mn

P

S

Cr

Ni

Mo

0.35-0.45

0.20-0.40

1.30-1.60

0.030max

0.030max

1.80-2.10

1.90-1.20

0.15-0.35

Din Plastic Mould Steel has excellent hardening penetration and 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. P20+Ni is upgraded version of plastic mold steel 0f , which normally supply in Pre hardened condition. Hardness in as supplied condition 280-320 HB with having uniform hardness. It can be subject to a nitriding treatment to improve its wear resistance.

Steel Properties:

• P20+Ni is upgrade version of plastic mold steel 0f , which normally supplied in Prehardened condition
• Hardness in supplied condition is 280-320 HB
• Additional nickel content of 1 % increases through hardening
• It is micro-alloyed
• Good machinability
• Suitable for texturing
• Outstanding Polishability
• Corrosion resistance
• Vacuum-degassed steel with the following excellent features.
  

Application: P20 is equivalent grade of most popular steel grade of DIN which is applicable for large & small plastic mould dies for Automotive Industries, Dies for Domestic goods , High finishing plastic Die, Bolster Plates of Presses, Die Holders & Shoe blocks for drop Hammers, Press Cassettes , Upsetter Blocker, forging dies, Different dies & mold for plastic products etc.

Physical Properties:

Coefficient of Thermal Expansion at °C

10 ¯ m / (m*K)

20-100

11.2

20-200

12.8

20-300

13.5

20-400

13.7

20-500

14.3

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20-600

14.7

20-700

14.9

Thermal Conductivity at °C

W / (m*K)

20

35

350

34

700

33

Heat Treatment:

Soft Annealing °C

710-740

Cooling

Furnace

Hardness HB

max. 235

Hardening °C

840-870

Quenching

Polymer or Oil

Hardness after quenching HRC

51

Tempering °C after quenching

100

200

300

400

500

600

700

HRC

51.5

50.2

48

46.2

43

39

29

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