Product typeFind your steelSITHERMSITHERM S353R
BrandS353R

Hot Work Tool Steel

SITHERM S353R is engineered for demanding hot-work applications, including die casting, die forging, and extrusion of light metals and alloys. Its high toughness and thermal fatigue resistance make it ideal for highly stressed structural components. Additionally, SITHERM S353R's  polishability extends its utility to plastic moulding applications.

Industries in detail

Product advantages

SITHERM S353R is a premium hot work tool steel grade with improved toughness, better resistance to heat cracking, wear and plastic deformation. It is used in hot-work applications like die casting, die forging and extrusion.

Improved toughness (≥ 23 J) 

SITHERM S353R is characterised by elevated toughness and is specifically designed for demanding hot-work applications where resilience and durability are required.

KV impact specimens (EN ISO148-1:2017 / ASTM A370-05-17) are used to test impact toughness in a short transverse direction.

Specimens are quenched and tempered to 45+/-1 HRC, and test is performed at 20 °C. Average impact toughness of forged quality is higher than 23 Joule for the average forging size of blocks up a thickness of 500 mm. (NADCA#229-2016).

Manufacture

SITHERM S353R is made by SIJ Metal Ravne.

Standards & certificates

Material number

1.2367

AISI/SAE

1.2367

Properties

Density[g/cm³]:7.65 - 7.85
Thermal conductivity[W/mK]:28.5 - 32
Electrical resistivity[Ω mm²/m]:0.50 - 0.90
Specific heat[J/kgK]:0.47 - 0.59
Elasticity[10³ x N/mm²]:165 - 215

Chemical composition

In weight %

C0.36
Si0.30
Mn0.30
Cr5.00
Mo2.30
V0.60

Product forms

Flat sections

rolled
Wup to 1000 mm
Tup to 500 mm

Round bars | Forged

forged
Lup to 6000 mm
⌀up to 1000 mm

Square section

forged
Wup to 600 mm

Continuous Cooling Transformation (CCT)

Tempering

Hardening

Hardness after hardening is 50 - 54 HRC (1680 - 1916 N/mm²).

Disclaimer

The information and data presented herein are typical or average values. The typical properties of the materials described are provided solely to assist readers in making their own evaluations and decisions. These values are not guaranteed.
Applications specifically suggested for the materials described are intended only for illustrative purposes, enabling the reader to make their own assessments. They are not to be construed as warranties, whether express or implied, regarding fitness for any particular purpose.
The information and data are provided for informational purposes only and may be revised at any time without notice.
Unless otherwise specified, all registered trademarks are the property of SIJ – Slovenska industrija jekla, d.d. (Slovenian Steel Group) and its subsidiaries (SIJ Group).
Copyright © 2024 by SIJ Group. All rights reserved. Contact us for further information.

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