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Material data sheet

Steel grade

Last revised: Fri, 17 Jun 2022 11:42:24 GMT

General Information

A medium carbon steel for quench and tempering steel with high hardenability. Ovako 477L has high tensile strength in combination with high toughness, and it is often used for large axles and machine parts. By using air– or gas-quenching it is possible to reduce the amount of quenching distortion. Additionally the use of quenching medias such as oil and salt may be avoided, which improves both safety and environment. The sulphur content is in a low and narrow range for consistent machinability.

Suitable for nitriding

Suitable for induction or flame hardening

Through hardenability corresponding to a bar with approx 60mm diameter (cooling in still air)

Provides low distortion

Weldable under certain conditions

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

TTT CCT - Ovako 477L

Tempering response - Ovako 477L

Mechanical Properties - Ovako 477L

Steel cleanliness

Micro inclusions - steel grade Ovako 477L   Macro inclusions - 477L
Applied standard ASTM E45 Applied standard

ISO 3763

(Blue fracture)

Sampling ASTM A295 Sampling Statistical testing on billets

Maximum average


A B C D Limits < 5 mm/dm2
Th He Th He Th He Th He
2.5 1.5 1.0 0.5 0 0 0.5 0.5

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.