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Material data sheet

Steel grade

Last revised: Tue, 07 Feb 2023 13:39:03 GMT

General Information

Ovako 152 is a high cleanliness case hardening steel used for bearing, transmission components and other highly stressed applications. There are three versions of the grade.

152A  / 20NiCrMoS2 - variant with regulated sulphur content for enhanced machinability

152C / 20NiCrMo2 - variant with enhanced hardenability (BQ)

152G / 20NiCrMo2 - Bearing Steel Quality (BQ) variant

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

20NiCrMo2, 20NiCrMoS2, 8620, 8620H, 1.6522, 1.6523, 1.6526, SS2506, UNS H 86200

152C : DI min 2,21.

20NiCrMo2-2+H shows the Jominy band accordig to EN ISO 683-3. Jominy hardenability according to ASTM A255. The graph also shows the average values +/- 1 standard deviation for steel grade 152G and 152C.

Carburizing response - Ovako 152G

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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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.