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Variants

Material data sheet

Steel grade

  • SB28M13CB/9667
Last revised: Thu, 23 Mar 2017 14:53:12 GMT

General Information

WR-Steel®
(Wear resistant ) WR-steel, stands for wear-resistant steel. This group of steel includes a broad range of grades with a wide range of hardness levels 350 – 650 HV, dimensions and steel grades designed to give you a wear-resistant advantage when making product exposed to a high degree of wear and where service life is important. WR-steels are characterised by consistent properties and cost effectiveness due to optimized alloy content for different end applications.

Boron grade 29MnCrB5-2 is a non-standardised grade located in between 27MnCrB5-2 and 33MnCrB5-2. It is suitable for wear parts, but may be heat-treated for good toughness if needed. A tight chemical composition ensures repeatable heat-treatment response.

* Designation followed by "*" is not an official EN standard grade but named according to the rules in EN 10027.

Similar designations

27MnCrB5-2, 33MnCrB5-2, 15B35H, SB9667

+QT temperatures 900 + 510 °C

 

A tempering is recommended after quenching. For maximum hardness the tempering should be 200 °C, for increased toughness the tempering temperature should be higher. 

 

Other properties (typical values)

Youngs module (GPa)Poisson´s ratio (-)Shear module (GPa)Density (kg/m3)
210 0.3 80 7800
 Average CTE 20-300°C (µm/m°K) Specific heat capacity 50/100°C (J/kg°K) Thermal conductivity Ambient temperature (W/m°K) Electrical resistivityAmbient temperature (µΩm)
 12  460 - 480  40 - 45  0.20 - 0.25

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Disclaimer

The information in this document is for illustrative purposes only. The data and examples are only general recommendations and not a warranty or a guarantee. The suitability of a product for a specific application can be confirmed only by Ovako once given the actual conditions.The purchaser of an Ovako product has the responsibility to ascertain and control the applicability of the products before using them. Continuous development may necessitate changes in technical data without notice. This document is only valid for Ovako material. Other material, covering the same international specifications, does not necessarily comply with the properties presented in this document.