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Material data sheet

Steel grade

Last revised: Tue, 19 Oct 2021 12:11:56 GMT

General Information

25CrMo4 is a Cr and Mo alloyed quench and tempering steel with low carbon content. The steel combine high strength with high toughness.

  • Variant 322A correspond to the EN grade 25CrMo4.
  • Variant 322D corresponds to SAE 4130 / 30CrMo4*. Suitable for flame or induction hardening.
  • Variant 322Q is an IQ steel that corresponds to SAE 4130 
  • Variants 6014 and 6016 are both EN grade 25CrMo4 and M-steel

Delivered as rolled, soft annealed, normalized or quench and tempered. Weldable under certain conditions. 


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


The basis for the concept is that non-metallic inclusions are modified and controlled with calcium treatment in a way to minimize tool wear and to maximize chip control in machining operations.

Our M-Steel treatment can be applied to any steel grade. 


For further reading about our M-steel concept see our home page.



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

Similar designations

SS2225, 4130, 1.7218

The standard variant is the +HH version of 25CrMo4 EN ISO 683-2

Steel cleanliness

Micro inclusions - steel grade 322A + 322D  



Macro inclusions - 322A + 322D
Applied standard ASTM E45 Applied standard

ISO 3763

(Blue fracture)

Sampling ASTM A295 Sampling Statistical testing on billets




A B C D Limits < 5 mm/dm2
Th He Th He Th He Th He










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.