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Variants

Material data sheet

Steel grade

Last revised: Mon, 13 Sep 2021 11:04:33 GMT

General Information

Hybrid Steel® is a low carbon steel containing a number of carefully controlled alloying elements, most importantly nickel, chromium, aluminium, molybdenum and vanadium. These enable it to develop its full properties after aging at elevated temperature (500–620°C). The chromium and aluminium content also improves corrosion resistance. The variant 197A is offered under the name Hybrid Steel 50 and the variant 297A is offered under the name Hybrid Steel 55 and the variant 397A is offered under the name Hybrid Steel 60. 

Hybrid Steel 50 - Engineering steel.

Hybrid Steel 55 - Engineering steel.    

Hybrid Steel 60 - Bearing steel.                                                   

Maximum hardess after aging: Hybrid Steel 50, 50HRC. Hybrid Steel 55, 55HRC.   Hybrid Steel 60, 60HRC.  

 

Hybrid Steel offers superior mechanical and fatigue strength compared to conventional steel grades at elevated temperatures. 

  • Excellent elevated temperature strength
  • Flexible hardness, achieved by an aging treatment in the temperature range 500–620°C
  • Extremely good dimensional stability when aging is applied 
  • High uniformity of properties also for large components
  • Good weldability, no preheating necessary
  • Corrosion resistance comparable to AISI 440C

The density for these grades is 7582 kg/m3.

 

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

Similar designations

X20NiCrAlMoV6-5-2-1, X30NiCrAlMoV6-5-2-1 , Ovako197A, Ovako297A, Ovako397A

Transformation temperatures for Hybrid 55 above. AC3 for Hybrid Steel 50 is 950oC. AC3 for Hybrid Steel 60 is 1020oC.

Mf is 150°C for all three grades

Hybrid Steel

Yield Strength at Elevated Temperatures

Aging Characteristics

Aging

Fracture Toughness (K1C)

Oxidation Resistance

Corrosion Resistance

Nitiriding

Welding

Distortion Hybrid Steel 55

Thermal Properties

Machining recommendations Hybrid Steel 50

Hybrid Steel 50, as rolled

Turning

  Insert/tool Cutting speed vc (m/min) Feed rate fn (mm/rev) Cutting depth ap (mm)
Rough / medium RCMT1204 MP-M3 2220 140-170 0.45-0.7 2-3
CNMG120412-MM 2220 120-145 0.3-0.45 2-3
Fine CNMG120408-MM 2220 125-150 0.25-0.40 1.5-2.5
CNMG120404-MM 2220 125-150 0.20-0.35 0.5-1.5

 

Drilling

Tool Diameter Ø (mm) Cutting speed vc (m/min) Feed rate fn (mm/rev) Depth (mm)
Mitsubishi MVX2500X6F25 insert SOMX084005-UM VP15TF 25 70 0.18 5 x Ø
Mitsubishi STAWMN1600S20 insert STAWN1600T VP15TF 16 40 0.30 5 x Ø
Mitsubishi MPS1-0800-PC 8 70 0.27 2 x Ø
Mitsubishi MPS1-0800-L20C 8 55 0.27 20 x Ø
Mitsubishi MPS1-0400-PC 4 60 0.15 2 x Ø
Mitsubishi MPS1-0400-L30C 4 45 0.18 20 x Ø

Machining recommendations Hybrid Steel 55

Hybrid Steel 55, soft annealed

Turning

  Insert/tool Cutting speed vc (m/min) Feed rate fn (mm/rev) Cutting depth ap (mm)
Rough / medium RCMT1204MP-M3 2220 165-195 0.45-0.7 2-3
CNMG120412-MM 2220 150-175 0.3-0.45 2-3
Fine CNMG120408-MM 2220 160-180 0.25-0.40 1.5-2.5
CNMG120404-MM 2220 160-180 0.20-0.35 0.5-1.5

 

Drilling

Tool Diameter Ø (mm) Cutting speed vc (m/min) Feed rate fn (mm/rev) Depth (mm)
Mitsubishi MVX2500X6F25 insert SOMX084005-UM VP15TF 25 100 0.18 5 x Ø
Mitsubishi STAWMN1600S20 insert STAWN1600T VP15TF 16 55 0.30 5 x Ø
Mitsubishi MPS1-0800-PC 8 100 0.27 2 x Ø
Mitsubishi MPS1-0800-L20C 8 70 0.27 20 x Ø
Mitsubishi MPS1--0400-PC 4 80 0.15 2 x Ø
Mitsubishi MPS1-0400-L30C 4 60 0.18 20 x Ø

Machining recommendations Hybrid Steel 60

Hybrid Steel 60, soft annealed

Turning

  Insert/tool Cutting speed vc (m/min) Feed rate fn (mm/rev) Cutting depth ap (mm)
Rough / medium RCMT1204 MP-M3 2220 155-185 0.45-0.7 2-3
CNMG120412-MM 2220 150-180 0.3-0.45 2-3
Fine CNMG120408-MM 2220 155-180 0.25-0.40 1.5-2.5
CNMG120404-MM 2220 155-180 0.20-0.35 0.5-1.5

 

Drilling

Tool Diameter Ø (mm) Cutting speed vc (m/min) Feed rate (mm/rev) Depth (mm)
Mitsubishi MVX2500X6F25 insert SOMX0804005-UM VP15TF 25 85 0.18 5 x Ø
Mitsubishi STAWMN1600S20 insert STAWN1600T VP15TF 16 45 0.30 5 x Ø
Mitsubishi MPS1-0800-PC 8 85 0.27 2 x Ø
Mitsubishi MPS1-0800-L20C 8 60 0.27 20 x Ø
Mitsubishi MPS1-0400-PC 4 70 0.15 2 x Ø
Mitsubishi MPS1-0400-L30C 4 50 0.18 20 x Ø

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.