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440HBW Quenched Hardened Steel Bar High Precision Diameters 21 - 172 Mm

Categories Hardened Steel Bar
Brand Name: VANFORGE
Certification: ISO9001, ISO10012, ISO14001, OHSAS18001, ABS, BV, DNV, Lloyd, NK
Place of Origin: China
MOQ: 5 metric tons
Payment Terms: L/C, T/T
Supply Ability: 5000 metric tons per month
Delivery Time: 60 days
Packaging Details: Seaworthy package for export
Material: Alloy steel
Process: Hot rolled
Treatment: Quenched and tempered
Surface: Black, peeled
Shape: Round
Length: Cut to length on request
Price: Negotiable
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440HBW Quenched Hardened Steel Bar High Precision Diameters 21 - 172 Mm

440HBW quenched and tempered tool and engineering steel round bar


Description


Pre-hardened, precise, predictable steel, now in round bars.


440HBW tool steel round bars are pre-hardened, ready-to-use quenched and tempered tool steels that come in a range of diameters from small to large.


Suitable for engineering applications in tool holders and in different types of shafts and rolls, the diameter dimensions also provide a better solution for round parts in tooling applications like molding and in dies for aluminium die casting.


Dimension Range


440HBW tool steel round bars are available in diameters 21 - 172 mm. Other dimensions can be available on request.


Mechanical Properties


Diameter

(mm)

Hardness

(HBW)

21 - 150410 - 475

Bar Hardness is measured on a milled surface, with indents positioned as impact test according to EN 10083.


Impact Properties

Diameter

(mm)


Min. Impact Energy for Charpy-V, longitudinal direction
21 - 14118 J / 20 °C
142 - 15011 J / 20 °C

Impact testing according to EN 10083, EN ISO 148.


Ultrasonic testing

Ultrasonic inspection is carried out according to EN 10308


Diameter and Length

Tolerances according to EN 10 060.


Straightness

Straightness according to EN 10 060.


Surface Properties

Turned surface.


Delivery Conditions

Quenched and Tempered at a minimum temperature of 590°C.

On delivery from VANFORGE the bars meet the following specifications:

  • free from mill scale
  • not repair welded

Fabrication and Other Recommendations


Welding, bending and machining

440HBW tool steel is not intended for further heat treatment. If 440HBW tool steel is heated above 590°C after delivery from VANFORGE, no guarantees for the properties of the steel are given.

Nitriding or surface coating may be carried out if the temperature is below 590°C.

Appropriate health and safety precautions must be taken when welding, cutting, grinding or otherwise working on the product. Grinding, especially of primer-coated plates, may produce dust with high particle concentration.


Product size range

Diameter: 21mm - 150mm

Length: on request


Production Process



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