Plastic Mould Steel P20 1.2311 Alloy Steel Round Bar tool and die steel
1.2311 Tool steel is a type die steel which has been pre-hardened by the "super clean" production process, showing a high degree of purity and excellent uniform structure, excellent polishing and light etching engraving.1.2311 is commonly supplied in the hardened and tempered condition with a supply hardness of approximately 300HB.
This steel gives an excellent polished finish and is one of the most widely accepted specifications for machine cut plastic moulds and zinc die casting dies. This grade gives excellent wear resistance but if maximum surface hardness is required for compression moulding plastic dies or similar tools, the steel can be case hardened or nitrided.
1.2311 Plastic Mold Tool And Die Steel Specification
Shape | Round, Square ,Blocks ,Rollers,Flat ,Shafts |
Delivery condition | Rough ,Semi-finished ,finished |
Diameter | φ150mm-15000mm |
Length | (160-1000mm )*(300-2000mm) |
UT standard | SEP1921,EN10228-3 C/c D/d |
Standard | EN10250,EN10083,SEW550 etc. |
Grain size | 5-8 acc to ASTM E112-96 |
Marking | Grade/Weight/Length/Size/Heat Number |
Tool and die steel 1.2311 chemical composition
Grade | C | Si | Mn | P | S | Cr | Mo |
Guangda 2311 | 0.10-0.40 | 0.10-0.40 | 1.50-2.00 | ≤0.020 | ≤0.005 | 1.30-1.70 | 0.15-0.35 |
Tool and die steel 1.2311 Heat treatment
Heat Treatment
● 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 1100°F) for a Rockwell C hardness of 37 to 28.
● Annealing
Annealing for AISI P20 tool steels takes place at 760-788°C (1400 to 1450°F) and then the steels are cooled slowly in the furnace at a temperature less than 4°C (40°F) per hour.
Applications of P20 bar and block
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.
Tool and die steel 1.2311 Equivalent steel grades
Country | USA | German | GB/T | JIS |
Standard | ASTM A681 | DIN EN ISO 4957 | GB/T 1299 | |
Grades | P20 | 1.2311 | 3Cr2Mo | PDS-3 |
Tool and die steel 1.2311 characteristics
Alloyed and pre-toughened tool steel, especially suitable for polishing and nitriding; high dimensional stability.After heat treatment, machining and polishing performance is good, can be carried out, and can be processed, suitable for chromium surface treatment, material hardness uniform, good toughness, good mechanical processing performance.
A wide range of pre-hardened hardness and good hardness uniformity .The hardness of Guangda 2311 between 28-34 HRC can be adjusted according to customer's requirements, cross hardness fluctuations is ±1.5HRC
Tool and die steel 1.2311 Application
Other Tool and die steel we provided
Catalogue | Grades | Size | |
Diameter (mm) |
Thickness*width (mm) |
||
Plastic mold steel |
S50C,S55C,S55C+Cr,HMSD2738,HMSD2738HH,P20, |
Φ200-1200 | 160~1000×300~2000 |
4Cr13ESR,S136ESR,HMSD 80,1.2083,1.2316,1.2711,1.2714,1.2767 | Φ100-450 | 100~450×300~2000 | |
Hot work die steel | HMSD 2344/PH13,HMSD DVN,HMSD DM,HMSD H13-MOD | Φ100-450 | 100~450×300~2000 |
1.2344/H13 ESR,1.2365/H10 ESR,1.2343/H11ESR,1.2367,3Cr2W8V/H21 ESR,5CrNiMo,H13F,SKD61 | Φ100-1000 | 100~600×300~2000 | |
Cold work die steel | 1.2379/D2 ESR,HMSD DC53,SKD11,Cr12MoV ESR | Φ100-350 | 100~350×300~1000 |
About Guangda
Guangda are professional die and tool steel manfuacturer and based on professional technologies,well-furnished equipmnets with rich experience. We provide high quality die steel materials: super large section pre-hardening plastic die , high polishing mirror die , high polishing mirror die , corrosion resistant mirror die , car lamp die steel, high heat strength hot die steel , high heat stability hot work die steel etc .
We are qualified by the classifications such as PED,DNV, BV, Rina, ISO, GL, ABS, LR .Act as the high-tech enterprises with high-quality special alloy materials as the core business belong to the "advanced iron and steel materials" industry under the strategic emerging industries supported by the state.
Products are widely used in automobille,machinery and electronics industry , home appliances ,defense and aerospace industry .Especially , the newly developed die-casting mold steel ,core bar for large diameter steel sleeves and big plastic mould block ,have filled in the technical blanks and reached the top quality in the world .At the same time ,we maintain leading role in advanced vacuum heat treatment technology and advanced surface technology with the support of the research Group .
1.2311 steel
1.2311 p20
DIN 1.2311
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