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26

Fe55,847

Stainless hot-work steel (powder)

CL 91RW is a hard stainless steel with high chrome content. With an appropriate approval* this material can be used for production of mould components for high volume injection moulding as well as for stainless functional components with high loads.

CHEMICAL COMPOSITION

Component Indicative value (%)

C 0,03

Si 0,3

Mn 0,3

Cr 12

Ni 9,2

Mo 1,4

Al 1,6

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CL 91RW Stainless hot-work steel

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TECHNICAL DATA AFTER RECOMMENDED HEAT TREATMENT

Yield Strength Rp0,2 1 approx. 1.600 N/mm2

Tensile Strength Rm 1 approx. 1.700 N/mm2

Elongation A 1, 2 > 2 %

Young‘s Modulus 3 approx. 200.000 N/mm2

Thermal Conductivity 3 approx. 18 W/mK

Hardness 4 48 – 50 HRC

With an appropriate approval* CL 91RW can be used for production of tool inserts with conformal cooling and medical or chirurgical instruments as well as for packaging used in food and pharmaceutical industries.

RANGE OF APPLICATION

1 Tensile test at 20°C according to DIN EN 501252 By using a special heat treatment a higher elongation can be achieved.3 Specification according to the material manufacturer’s data sheet.4 Hardness test according to DIN EN ISO 6508

CL 91RWStainless hot-work steel

Test piece (x 100 magnification)

MICROSECTION

Test piece (x 20 magnification)

HEAT TREATMENT MICROSTRUCTURE

Heat up with 100°C/h to 530°C. Maintain temperature for 4 hours. Allow the components to cool down in the oven with 100°C/h.

Components made from stainless hot-work steel CL 91RW display a homogeneous, dense structure after they are manufactured by means of the metal laser melting process LaserCUSING®.

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