Description

1.2311 Steel Plate (410 × 160 mm)

Link: 1-2311-steel-plate-410x160

1.2311 Steel Plate (410 × 160 mm) is a high-quality pre-hardened plastic mould steel manufactured for precision tooling and mould-making applications. This premium grade is widely used in the production of plastic injection moulds due to its excellent toughness, wear resistance, and superior machining performance.

The material is supplied in a pre-hardened condition (28–34 HRC), allowing manufacturers to machine the steel directly without requiring additional heat treatment. This significantly reduces production time while minimizing the possibility of distortion or cracking during mould manufacturing.

As a medium-carbon alloy tool steel, DIN 1.2311 Steel Plate provides excellent dimensional stability, uniform hardness, and outstanding polishing characteristics. These properties make it an ideal choice for medium and large moulds where durability and surface finish are important.

Related Specifications

• DIN 17350
• AISI A681
• YB/T 094

Chemical Composition

Element	Content (%)
Carbon (C)	0.35 – 0.45
Silicon (Si)	0.20 – 0.40
Manganese (Mn)	1.30 – 1.60
Phosphorus (P)	≤ 0.035
Sulfur (S)	≤ 0.035
Chromium (Cr)	1.80 – 2.10
Molybdenum (Mo)	0.15 – 0.25

Equivalent Steel Grades

• AISI / ASTM: P20
• GB Standard: 3Cr2Mo

Available Forms

• Round Bar
• Steel Plate
• Flat Bar
• Square Block
• Hexagonal Bar
• Precision Ground Plate
• Ground Round Bar

The material can be supplied in standard stock sizes or precision-cut dimensions according to customer requirements.

Applications

1.2311 Steel Plate is suitable for a wide range of industrial tooling and mould manufacturing applications, including:

• Plastic Injection Moulds
• Plastic Mould Bases
• Zinc Die-Casting Moulds
• Aluminium Die-Casting Dies
• Magnesium Alloy Die-Casting Tools
• Hot Forging Dies
• Hot Pressing Tools
• Metal Extrusion Dies
• Precision Tooling Components
• Industrial Die Sets

Supply Size Range

Round Bar

• Diameter: 20 mm – 1400 mm

Steel Plate

• Thickness: 20 mm – 1400 mm

Custom sizes and precision machining services are available on request.

Heat Treatment

Forging

Heat the steel slowly to 930–1050°C and maintain a uniform temperature throughout the material. After forging, allow the material to cool gradually to achieve optimum structural stability.

Annealing

Heat to 775–790°C, hold for sufficient soaking time, and cool slowly inside the furnace to improve machinability and relieve internal stresses.

Quenching

Heat the steel to 820–840°C followed by oil quenching to obtain the desired hardness and mechanical properties.

Tempering

Temper the material between 100°C and 600°C, depending on the required hardness and application. Hold at the selected temperature for adequate time before cooling in still air to achieve the best combination of toughness and wear resistance.