SITHERM hot work steel
SITHERM hot work tool steel properties are matched specifically to high-temperature applications. These steels are typically used for forging, die casting, heading, piercing, trim, extrusion applications, and hot-shear and punching blades.
GRADE RANGE
| HTS GRADE | W.NR. | DIN | AISI | Achievable hardness | Stock program ◯ | Stock program ☐ | Downloads |
| SITHERM 2343 | 1.2343 | X38CrMoV5-1 | H11 | 50–56 HRC | Φ > 12 mm < Φ 642 mm | <1010×455 | Data Sheet |
| SITHERM 2343R | 1.2343 | X38CrMoV5-1 | H11 | 50–56 HRC | / | <1010×455 | Data Sheet |
| SITHERM 2344 | 1.2344 | X40CrMoV5-1 | H13 | 52–56 HRC | / | <1010×355 | Data Sheet |
| SITHERM 2344R | 1.2344 | X40CrMoV5-1 | H13 | 52–56 HRC | / | <1010×355 | Data Sheet |
| SITHERM 2367 | 1.2367 | X38CrMoV5-3 | / | 53–57 HRC | / | <705×355 | Data Sheet |
| SITHERM 2714 | 1.2714 | 56NiCrMoV7 | / | 56–58 HRC | / | <1010×410 | Data Sheet |
| SITHERM S353R | / | / | / | 54–56 HRC | Φ > 202 mm < Φ 282 mm | <760×455 | Data Sheet |
| SITHERM S360R | / | / | / | 62–64 HRC | Φ > 123 mm < Φ 263 mm | <610×310 | Data Sheet |
| SITHERM S361R | / | / | / | 56–58 HRC | / | <810×410 | Data Sheet |
| SITHERM S140R | / | / | / | 50–52 HRC | / | <705×300 | Data Sheet |
Custom developed grades
SITHERM S2343R
General-purpose hot work tool steel for demanding applications
Key Benefits
- Excellent toughness, wear resistance, and machinability
- Produced using ESR remelting procedure for maximum purity and performance
- Suitable for water cooling and nitriding without significant loss of hardness
Performance Highlights
- Significantly higher impact toughness compared to SITHERM 2344R
(at the expense of lower hardness and wear resistance) - Certified to NADCA #229 standards
– However, HTS can guarantee significantly higher mechanical properties and stricter microstructure control
Learn More
SITHERM S353R
High-toughness hot work steel with excellent thermal fatigue resistance
Key Benefits
- Achieves high impact and fracture toughness
- Excellent thermal fatigue resistance at typical die casting hardness levels
- Certified as Grade C according to NADCA #229
– consistently exceeds standard requirements in performance
Typical Applications
- Die casting of light metals and alloys
- Structural parts exposed to high thermal and mechanical stress
- Tools used in: Die forging, Aluminum extrusion, Hot stamping
SITHERM S360R
Modified steel grade - high-hardness hot work tool steel with enhanced wear resistance and toughness
Key Benefits
- Achieves work hardness exceeding 55 HRC
- Retains impact and fracture toughness despite high hardness
- Not subject to NADCA #229, but tested to Grade B-level mechanical properties
Material Characteristics
- Higher carbon content
– Increases working hardness and wear resistance
– Ideal for applications with abrasive or erosive wear - Nickel alloying
– Enhances toughness, hardenability, and thermal conductivity
– Promotes uniform properties across tool cross-sections
SITHERM S140R
High thermal conductivity hot work tool steel
Key Benefits
- Engineered for maximum thermal conductivity
- Without compromising other fundamental properties of the material, such as hardness, hot wear resistance, toughness, hardenability, and oxidation resistance.
- Not subject to NADCA #229, but tested to match Grade B mechanical properties
Material Characteristics
- Exceptional thermal conductivity even at elevated temperatures
– Reduces risk of intergranular cracking (“pyrocracks”) due to thermal fatigue - High resistance to:
- Tempering and softening at high temperatures
- Hot wear, oxidation, and thermal degradation
Downloads
Download the catalog for more information about our steel offerings. Datasheets for each of the grades we offer can be found in the GRADE RANGE table above.
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