1.2311 Plastic Mould Steel | P20 Steel Plate Supplier

Description

• Steel Properties
• Nearest Equivalent : P20, NAK55, P20+Ni

What is 1. grade steel?

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1. is the Pre Hardened Plastic mould steel hardness distributed evenly in large cross sections that have excellent weldability with least hardness elevation, good mirror polishability and less streak texture making finishing easier. Size Section availability upto 255mm thickness. Supply hardness is 240-280 BHN.

  mold Steel Equivalent Steel Grades

Country USA German GB/T Standard ASTM A681 DIN EN ISO GB/T Grades P20 1. 3Cr2Mo

AISI P20 Steel Plate Materials

ASTM A681 C Mn P S Si Cr Mo P20 0.28 0.4 0.6 1 0.03 0.03 0.2 0.8 1.4 2 0.3 0.55 DIN ISO C Mn P S Si Cr Mo 1. 0.35 0.45 1.3 1.6 0.03 0.03 0.2 0.4 1.8 2.1 0.15 0.25

P20 Steel Mechanical Properties

Properties Metric Hardness, Brinell (typical) 300 Hardness, Rockwell C (typical) 30 Tensile strength, ultimate 965- MPa Tensile strength, yield 827-862 MPa Elongation at break (in 50 mm (2')) 20.00% Compressive strength 862 MPa Charpy impact (V-Notch) 27.1-33.9 J Poisson's ratio 0.27-0.30 Elastic modulus 190-210 GPa

What is steel used for?

Plastic mould steel equivalent to 1. use for die holders, zinc die, casting dies, backers, bolsters, injection moulds, mould frames for plastic moulds, Shoe Blocks, pressure casting moulds, recipient sleeves Etc.

Steel Heat Treatment

Soft annealing °C Cooling Hardness HB 710 ' 740 Furnace max. 235

 

Hardening °C Quenching Hardness after quenching HRC 850 ' 880 Oil or saltbath, 180 ' 220 °C 52

 

Tempering °C after Quenching 100 200 300 400 500 600 700 HRC 52 50.5 48.5 46 42 36.5 28

We supply full range of Plastic mould Steel plate, Plastic Mould steel round bar , Carbon steel plate, Carbon steel round Bar,  Hot work steel , Special Steel ,Tool Steel ,Corrosion resistant Steel.

 

What is P20 Steel ?

AISI P20 Steel Plate Material is a versatile, low-alloy tool steel that is characterized by good toughness at moderate strength levels. The special purpose mold steel P20 steel plate is commonly used for plastic injection mold cavities and tooling and for die casting dies for zinc. P20 mold steel plate material is typically sold in the pre-hardened condition at a hardness of approximately 300 HBW.

P20 tool steel differs from area to area in the different countries.Europeans generally use the DIN spec-DIN EN ISO standard materials (1. and 1.), while in Japan steel industry standard, PX5 is the new standard P20. And the Americas Countries, Grade steel P20 is the most and wide used steel grade material. In China, 3CrM2Mo is the P20 steel grade equivalent, which is in the standard GB/T tool steel specification.

AISI P20 tool steels are nitrided or carburized. These P20 mold steel materials steels are capable of being machined into complex and large dies and molds. Material P20 steel plate and round bars are mostly used in the carburized condition. The presence of chromium and nickel enhances the toughness and hardness of mold steel P20 grade material.

1. Supply Range of P20 Steel

Round Bar: diameter 200mm ' mm

Steel Plate: thickness 16-800mm x width 200-mm

Surface Finish: Black, Rough Machined, Turned or as per given requirements.

2. Relevant P20 Tool Steel Specification and Equivalent Steel Grades

Country USA German GB/T Standard ASTM A681 DIN EN ISO GB/T Grades P20 1. 3Cr2Mo

3. AISI P20 Steel Plate Materials

ASTM A681 C Mn P S Si Cr Mo P20 0.28 0.4 0.6 1 0.03 0.03 0.2 0.8 1.4 2 0.3 0.55 DIN ISO C Mn P S Si Cr Mo 1. 0.35 0.45 1.3 1.6 0.03 0.03 0.2 0.4 1.8 2.1 0.15 0.25 GB/T C Mn P S Si Cr Mo GBT 0.28 0.4 0.6 1 0.03 0.03 0.2 0.8 1.4 2 0.3 0.55

4. ASTM P20 Mold Tool Steel Properties

Physical Properties

• Density: 0.284 lb/in3 ( kg/m3)

• Specific Gravity: 7.86

• Modulus of Elasticity: 30 x 106 psi (207 GPa)

• Thermal Conductivity:

• 24 Btu/ft/hr/°F

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• 41.5 W/m/°K

• Machinability: 60-65% of a 1% carbon steel

P20 Steel Mechanical Properties

Properties Metric Hardness, Brinell (typical) 300 Hardness, Rockwell C (typical) 30 Tensile strength, ultimate 965- MPa Tensile strength, yield 827-862 MPa Elongation at break (in 50 mm (2')) 20.00% Compressive strength 862 MPa Charpy impact (V-Notch) 27.1-33.9 J Poisson's ratio 0.27-0.30 Elastic modulus 190-210 GPa

AISI P20 Mold Tool Steel Thermal Properties

Properties

Conditions

T (°C)

Treatment

Thermal expansion 12.8 x 10-6/ºC 20-425

'

5. Forging of P20 Steel Plate Mold Steel

AISI P20 steel plate and round bars materials are forged at °C (°F) down to 899°C (°F). Forging below 871°C (°F) is not recommended for these steels P20 material.

6. Heat Treatment of Tool Steel P20 material

• Stress Relieving

Preheating: Because mold steel P20 steel plate is sold in a pre-hardened condition, hardening heat treatment is not necessary. After machining and intermittently during service, the steel must be thermally stress relieved by heating to 900ºF (482ºC), equalizing and holding for one hour per inch (25.4mm) of thickness, and cooling in air to ambient temperature.

In those rare circumstances where the AISI steel P20 must be re-hardened, the steel must first be annealed prior to hardening.

• Hardening

Critical Temperature: Ac1: ºF (763ºC)

Preheating of P20 metal: Heat at a rate not exceeding 400ºF per hour (222ºC per hour) to -ºF (621-677ºC) and equalize.

• Austenitizing (High Heat)

Heat rapidly from the preheat to ºF (843°C). Soak for 30 minutes for first inch (25.4mm) of thickness, plus 15 minutes for each additional inch (25.4mm).

• Quenching

Pressurized gas, or interrupted oil to 150-125ºF (66-51ºC).

For oil, quench until black, at about 900°F (482°C), then cool in still air to 150-125°F (66-51°C).

• Tempering

P20 tool steels are tempered at 482-593°C (900 to °F) for a Rockwell C hardness of 37 to 28.

• Annealing

Annealing for AISI P20 tool steels takes place at 760-788°C ( to °F) and then the steels are cooled slowly in the furnace at a temperature less than 4°C (40°F) per hour.

7. Applications of P20 Steel Plate or Bar

P20 tool steels are used for low temperature applications that include injection molds and die casting dies. Main applications of P20 steel plate and bar:

Plastic moulds, die holder, backers, rames for plastic pressure dies, hydro forming mold tools.bolsters, die holders. Also suitable for other applications such as rails, shafts and wear strips.

We are reliable P20 tool steel, P20 steel plate, steel round bar and P20 steel flat supplier. Quality guarantee and reliable service make us a better choice for you for P20 special tool steel. We offer better P20 steel price and supplier service. Contact us today.

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