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Plastic Mold Tool Steel Bar Prehardening QT Round Bar P20 / 1.2311 / 3Cr2Mo

China Guangzhou Changfeng Steel Co., LTD certification
China Guangzhou Changfeng Steel Co., LTD certification
Gold supplier! Arranged shipment very fast, quality is super good. They are one of our best suppliers, will do more business with them in the future!

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Plastic Mold Tool Steel Bar Prehardening QT Round Bar P20 / 1.2311 / 3Cr2Mo

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Large Image :  Plastic Mold Tool Steel Bar Prehardening QT Round Bar P20 / 1.2311 / 3Cr2Mo

Product Details:
Place of Origin: China
Brand Name: CF
Certification: ISO / Mill Certificate
Model Number: 1.2311 P20 PDS-3 3Cr2Mo
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Standard Export Packing or As per request
Delivery Time: 15 to 20 days
Payment Terms: T/T, L/C
Supply Ability: 1000 MT per month
Detailed Product Description
Heat Treatment: Annealed/Q + T Surface Treatment: Black/Peeling/Polishing/Machined
Delivery Condition: Forged Or Hot Rolled Test: SGS/Ut 100%/Element Testing
Certificate: ISO/Mill Certificate Shape: Round/plate/sheet/flat Bar
Hardness: 28 To 32 HRC Flaw Detection: CC / DD/ EE
Service: Free Sample And 24 Hours Online Process: EAF+LF+VD+ESR
High Light:

carbon tool steel


tool steel flat bar


P20/ 1.2311/ 3Cr2Mo Plastic Mold Steel Prehardening QT Round Bar


P20 mould steel is a common alloy tool steel which usually supplied in QT condition. The 1.2311 steel can give an excellent polished finish. DIN 40CrMnMo7 tool steel is one of the most widely used material for machine cut plastic moulds. This grade also provides excellent wear resistance.



Physical Properties of 1.2311, P20, 3Cr2Mo special steel


Density: 0.284 lb/in3 (7861 kg/m3)


Specific Gravity: 7.86


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


Thermal Conductivity:


24 Btu/ft/hr/°F


41.5 W/m/°K


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



3Cr2Mo 1.2311 P20 special mould steel Mechanical and Physical Properties


Properties Metric
Hardness, Brinell (typical) 300
Hardness, Rockwell C (typical) 30
Tensile strength, ultimate 965-1030 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



1, Features

a, Good hardness uniformity and polishing property,good machining properties.

b, Good integral machanical performance when under high temperature, high Corrosion resistance

c, Good heat-resistance and fatigue-resistance,very high mechanical behavior,cutting mechanical property.

d, Pre-hardened to HRC28-32, can be directly used on mould processing, shorten the construction period.

e, High putity and homogeneous structure of China's biggest ESR production base for its strict requirement in the whole process of exploitation, smelting, vacuum degassing, ESR, forging, annealing, inspection.



2, Equivalent Grades


3Cr2Mo 1.2311 P20 PDS-3



3, 3Cr2Mo 1.2311 P20  Chemical Composition (Wt%)


Steel Grade C Si Mn Cr Mo S P
1.2311 0.35-0.45 0.20-0.40 0.60-1.00 1.80-2.10 0.30-0.55 ≤0.003 ≤0.030
P20 0.35-0.45 0.20-0.40 0.60-1.00 1.80-2.10 0.30-0.55 ≤0.003 ≤0.030
PDS-3 0.35-0.45 0.20-0.40 0.60-1.00 1.80-2.10 0.30-0.55 ≤0.003 ≤0.030



4, Available Size(mm)


Plate Size(mm) Flat Bar Size(mm) Round Bar Size(mm)
Thickness Width


Thickness Width Length Diameter Length
10-700 1600-2200 4000-10000 10-700 155-2200 2000-6000 20-200 2000-6000



5, Recommend Heart Treatment


Quenching Tempering
Heating temperature/℃ Cooling way Hardness (HRC) Heating temperature/℃ Cooling way Hardness
850-880 Oil Cooling 50-52 580-640 Air Cooling 28-32


6, Applications

Used for various lager-sized or medium-size precision plastic mould and alloy parts. 

a, Ideally suited for the production of plastic moulds;

b, Die holders, zinc die casting dies, backers, bolsters and injection moulds;

c, Shafts, rails and wear strips;



7, Packing: Standard Export Packing or As per request


Plastic Mold Tool Steel Bar Prehardening QT Round Bar P20 / 1.2311 / 3Cr2Mo 0




Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in plastic mould steel, hot work mould steel, cold work mould steel, alloy steel for mechanical, high speed steel, etc. All material are with high quality and competitive price.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as SGS, CE, ISO if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 30-50days (depend on the quantity)after receiving your prepayment or firm order.

Q: What is the payment term?
A: T/T or L/C or Trade Assurance.

Q: Can we visit your company and factory?

A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.



Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +8613535323261

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