Toolox 33 / 1.2738.mod Special Engineering Steel

Toolox 33 steel wheel delivery forms

Toolox 33: Properties, Applications, and Features

General Technical Characteristics

Toolox 33 is a pre-hardened, quenched, and tempered tool and engineering steel known for its high impact toughness and very low residual stresses, ensuring excellent dimensional stability after machining. Its low carbon and alloy content make it well-suited for welding and thermal cutting. Delivered in a hardened and tempered state, Toolox 33 is ready for immediate use without the need for additional heat treatment.

Key Characteristics:

• High impact toughness
• Very low residual stresses
• Excellent dimensional stability post-machining
• Good weldability and suitability for thermal cutting
• Superior machinability
• Excellent polishing and photo-etching properties

Chemical Composition (%):

• Carbon (C): 0.22–0.24
• Silicon (Si): 0.60–1.10
• Manganese (Mn): 0.80
• Phosphorus (P): ≤0.010
• Sulfur (S): ≤0.003
• Chromium (Cr): 1.00–1.20
• Molybdenum (Mo): 0.30
• Vanadium (V): 0.10–0.11
• Nickel (Ni): ≤1.00

This composition provides an optimal balance between strength, toughness, and machinability.

Mechanical Properties

• Hardness (HBW): 275–325
• Yield Strength (Rp0.2): ≥700 MPa
• Tensile Strength (Rm): ≥800 MPa
• Elongation (A5): ≥10%
• Impact Toughness (Charpy V 10×10 mm): ≥35 J at 20 °C

These properties make Toolox 33 suitable for applications requiring high strength and toughness.

Applications

Due to its unique properties, Toolox 33 is widely used in various industries.

Main Application Areas:

• Plastic and rubber molds
• Bending tools
• Machine components requiring high wear resistance and dimensional stability
• Press brake tools
• Wear parts
• Die casting molds

Toolox 33 is also suitable for components operating at elevated temperatures up to 590 °C.

Features

• Machinability: Toolox 33 offers excellent machinability, allowing for precise and efficient processing.
• Dimensional Stability: Very low residual stresses ensure minimal deformation after machining.
• Surface Treatment: Suitable for nitriding, induction, and laser hardening to enhance surface hardness and wear resistance.
• Weldability: Low carbon and alloy content provide good weldability without the risk of cracking.

Toolox 33 is a modern tool and engineering steel that combines high strength, toughness, and excellent machinability, making it an ideal choice for a wide range of applications in engineering and tool manufacturing.