Rapidur 3247

Alternative and trade names
DIN EN ISO HS2-9-1-8, 1.3247, AISI M42, AFNOR Z110DKCWV
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Description

1.3247 (HS2-9-1-8) Quenched and Tempered high-speed steel based on molybdenum with high wear resistance, red hardness and toughness. As a result of its low vanadium content, this grade exhibits good grindability.

Equivalent Materials

This material data has been provided by Deutsche Edelstahlwerke Specialty Steel (DEW).

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

Mechanical

PropertyValueComment

Hardness, Brinell

277.0

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annealed

Hardness, Rockwell C

66.0 - 69.0 [-]

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Chemical properties

PropertyValue

Carbon

1.08

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Chromium

4.1

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Cobalt

8.0

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Molybdenum

9.5

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Tungsten

1.5

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Vanadium

1.2

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Technological properties

Property
Application areas

For tools subject to severe mechanical wear, particularly suitable for die-sinking cutters, milling cutters and engraving machines, suitable for non-cutting shaping

Heat Treatment

Soft annealing: 820-860°C (Cooling in furnace) - Stress relief annealing: 630-650°C (Cooling in furnace) - Hardening: 1160-1190°C and quenching in air, oil or salt bath T=550°C - Tempering: at least 3 times 530-560°C