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Your present location:Home >> Products >> Plastic Mold Steel >> P20+Ni,1.2738,718 >> P20+Ni/718/1.2738 Plastic Mold Steel
  • Product Name: P20+Ni/718/1.2738 Plastic Mold...
  • Product ID: 3001
  • Views : 225

Chemical composition%

 

Standard

Steel Grade

C

Si

Mn

P

S

Cr

Mo

V

W

Other

DIN

1.2738

0.35-0.45

0.20-0.40

1.30-1.60

0.030

0.030

1.80-2.10

0.15-0.25

 

 

Ni 0.90-1.20

ASTM

P20+Ni

-

-

-

-

-

-

-

-

-

--

GB

3Cr2MnNiMo

0.32-0.40

0.20-0.40

1.10-1.50

0.030

0.030

1.70-2.00

0.25-0.40

 

 

Ni 0.85-1.15

Specification

 

Round bar

Diameter

Length

-

Forged round bar:φ50~450

2000~6000

-

 Rolled round barφ10~80

 2000~6000

-

Flat bar

Thickness(mm)

Width(mm)

Length(mm)

Forged plate20~300

50~710

2000~6000

Rolled plate10~65

155~610

2000~6000

 

Characteristics

1.Widely used plastic mould steel with excellent comprehensive mechanical properties, high hardenability, uniformed hardness throughout cross section for large-sized steel after the quenching and tempering treatment.

2.With good polishing and low roughness.

3.To be used directly after prehardening, which can guarantee good usability and avoid deformation after heat treatment for the mould.

 

Application

1.Suitable for making oversized, large-sized plastic moulds with high preciseness, long life span.

2.Used for making low melting-pointed alloyed die-casting moulds (like tin, zin, lead)

 

Delivery condition

Prehardening, hardness : 28-35HRC

 

Specifications

Round bars and flats with various sizes are available in accordance with customers’ requirements.

 

Manufacturer

Dongbei, Changcheng, Baosteel

 

Equivalents

P20+Ni   718    1.2738

 

Forging Technique

 

Heating temperature

Initial forging temperature

Final forging temperature

Cooling

1140-1180

1050-1140

850

cooling in pit

 

 Heat treatment technique

 

Item

Annealing

Quenching

Tempering

Temperature

710-740

840-870

550-650

Cooling

Furnace cooling

Oil cooling or air cooling

air cooling

Hardness

235HB

51HRC

28-35HRC