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Last revised: Fri, 17 Jun 2022 15:03:11 GMT

20MoCrS4

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General Information

Ovako 124D is a Chrome-Molybdenum alloyed steel used mainly as a carburizing grade, but may also be used in Q&T condition of its own from the 0.2% Carbon level. By also being alloyed with Sulphur the machinability is improved in low speed cutting as eg Broaching. This makes Ovako 124D very suitable for gears, but also other components with heavy machining by drilling or milling like Gear wheels in Hydraulic pumps. From being Ingot cast the cleanliness is following the base cleanliness from the Ovako Ingot process rouite.

Similar designations

20MoCr4

Chemical composition

Variant	Cast	Weldability		C %	Si %	Mn %	P %	S %	Cr %	Ni %	Mo %	V %
124D	IC	CEV 0.62_max	Min	0.18	0.15	0.70	-	0.020	0.40	-	0.40	-
124D	IC	Pcm 0.37_max	Max	0.22	0.35	0.90	0.035	0.035	0.50	0.20	0.50	0.100
20MoCrS4 EN 10084:2008	Std	CEV _max	Min	0.17	-	0.70	-	0.020	0.30	-	0.40	-
20MoCrS4 EN 10084:2008	Std	Pcm _max	Max	0.23	0.40	1.00	0.025	0.040	0.60	-	0.50	-

Mechanical Properties

Variant	Condition	Format	Dimension [mm]	Hardness
Rp_0.2 * R_eh, ** R_el
124D	+AR	Tube,wall	22 typical	190 HB typical

Transformation temperatures

	Temperature °C
MS	440
AC1	735
AC3	860

Heat Treatment Guide generated Graphs

The following graphs are generated from a theoretical model. For further info see the Heat treatment guide module. Select a specific grade version for individual display.

Hardenability

Jominy temperature: 900°C for Ovako 124D. 910°C for 20MoCrS4 EN 10084:2008.

SUSTAINABILITY-ENVIRONMENTAL IMPACT DATA

At Ovako sustainability and reduction of our environmental impact is a major focus in everything we do.
Further information is found here.

In many international comparisons the crude steel Scope 1-2 emission is a key parameter, ie. the CO₂ emission from the steel works itself.
As of 1 January 2022 we carbon offset all our scope 1 and 2 volume shown below.

Steel works	Hofors	Smedjebacken	Imatra
CO2e/kg	120	62	76

To get the full picture of our products environmental impact we have to look at all of our CO₂ emission sources.
Not only the steel work Scope 1-2 itself, but all operations downstream in our production, heating and heat treatment furnaces etc (full scope 1-2) as well as all the emission from input material, eg. alloys, scope 3.

Steel Grade	Format	Condition	Scope 1-3 (CO2e kg /1000 kg steel)	Climate compensated Net emission = Scope 3 (CO2e kg /1000 kg steel) Scope 1 - 2 = 0 (compensated)
124D	Round bar	+AR	636	240
124D	Round bar	+SA	642	241
124D	Tube,wall	+AR	655	252
124D	Tube,wall	+SA	657	252

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.

General information
Chemical composition
Mechanical properties
Transformation temp.
HTG Graphs
Hardenability
Sustainability