Filter datasheet

Variants

Material data sheet

Steel grade

Last revised: Tue, 07 Feb 2023 13:39:57 GMT

General Information

Ovako 157 is a high cleanliness case hardening steel used for bearing and transmission components. There are three different modifications of the grade.

157C - Bearing quality (BQ) variant with low sulphur content

157D - Bearing quality (BQ) variant with low sulphur content

157G - Regulated sulphur content for improved and consistent machinability

BQ-Steel®
BQ-Steel® is a bearing quality clean steel optimized for fatigue strength and is also ideal for new design solutions outside the bearing industry.

Similar designations

ASTM 4320, ASTM 4320H, ASTM 4320RH

CCT - Ovako 157C

Carburizing response - Ovako 157C

Steel cleanliness - Ovako 157D

Micro inclusions - BQ   Macro inclusions - BQ
Applied standard ASTM E45 Applied standard

ISO 3763

(Blue fracture)

Sampling ASTM A295 Sampling Statistical testing on billets.

Maximum

average limits

A B C D Limits < 2,5 mm/dm2
Th He Th He Th He Th He
2,0 1,5 0,8 0,1 0 0 0,5 0,4

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

Contact us

Would you like to know more about our offers? Don´t hesitate to contact us:

Via e-mail: info@ovako.com 

Via telephone: +46 8 622 1300

For more detailed information please visit http://www.ovako.com/en/Contact-Ovako/

  

 

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.