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Material data sheet

Steel grade

Last revised: Thu, 30 Jan 2025 11:12:49 GMT

General Information

Ovako 528E and 528Q is a high tensile quench and tempering steel with high wear resistance and good toughness. The grade is mainly used for axis and machine components. Ovako 528Q is produced with the quality class IQ (isotropic quality). This ensures a very low number of elongated sulphide inclusions which will give more isotropic properties. The oxidic cleanliness is high and the steel could therefore meet same high demands as for remelted qualities. Through hardenability corresponding to a bar with approx. Ø75mm (oil quenched) Suitable for flame or induction hardening. Delivered as rolled, soft annealed normalized or quench and tempered. Weldable under certain conditions.

IQ-Steel®

IQ-Steel® is an isotropic quality ultra clean steel optimized for high fatigue strength under multi axial loading.

Similar designations

4150, 1.7228

528E: Jominy hardenability according to ASTM A255. Average value with +/- standard deviation.

CCT - 528E and 528Q

Tempering response - 528E and 528Q

Steel cleanliness

Micro inclusions - 528E  

 

 

 Macro inclusions - 528E
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 < 5 mm/dm2
Th He Th He Th He Th He

2.5

1.5

1.5

0.5

0

0

1.0

 0.5

Steel cleanliness

Micro inclusions - IQ      Macro inclusions - IQ
Applied standard DIN 50602  K1 Applied standard

10 M Hz UST

(Ovako internal standard)
Sampling Six random samples from final product dimension Sampling Statistical testing on billets
Limits

The limit is dimension dependent. The average rating of six samples 

should not exceed the limits given in the graph

 Limits

< 5 defects/dm3

> 0,2 mm FBH

IQ

Fatigue properties - 528Q, 35 mm bar

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.