Amstrong® 550MC

Alternative and trade names
Soldur 550
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Description

Amstrong® 550MC characterised by high ductility, controlled internal purity, fine grain structure and low carbon content. On request, Amstrong® may be delivered with an improved surface finish on black hot-rolled product called MASC (Micro Adhesive Scale). Contact our commercial teams for further information.

It combines:

  • Outstanding mechanical properties
    • High strength
    • Toughness
    • Fatigue resistance
  • Good formability
  • Good weldability


    With its high strength, it is an excellent choice when weight-saving is a priority, and is frequently used to replace structural steels.

Related Standards

Equivalent Materials

This material data has been provided by ArcelorMittal.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyValueComment

Carbon equivalent (CEV)

0.44 [-]

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max.

Dimension

PropertyValue

Dimensions

*Pickled products with thicknesses up to 15 mm may be delivered after prior agreement: please contact us. Please feel free to check the figure on the right side of the material page for more details.

Mechanical

PropertyTemperatureValueComment

Charpy impact energy

-20 °C

40 J

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min. | for thickness 6-16 mm

Elongation

11 %

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min. | for thickness < 3 mm | Transverse, A80

12 %

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min. | for thickness < 3 mm, A80

13 %

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min. A5.65√So | for thickness 3-16 mm | Transverse

14 %

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min. A5.65√So | for thickness 3-16 mm

Tensile strength

620 - 750 MPa

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for thickness < 16 mm

630 - 750 MPa

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for thickness < 16 mm | Transverse

Yield strength

550 - 650 MPa

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for thickness < 16 mm

580 - 680 MPa

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for thickness < 16 mm | Transverse

Chemical properties

PropertyValueComment

Aluminium

0.015 %

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min.

Carbon

0.1 %

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max.

Manganese

1.7 %

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max.

Niobium

0.09 %

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max.

Phosphorus

0.02 %

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max.

Silicon

0.03 %

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max.

Sulfur

0.012 %

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max.

Titanium

0.15 %

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max.

Vanadium

0.2 %

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max.

Technological properties

Property
Application areas

High strength Amstrong® steels are used in a wide range of applications in transport (earth movers, trailers, agricultural and railroad machinery etc), profiling (racks etc) and building (cranes, safety barriers, light poles etc). Significant weight reductions can be achieved by using Amstrong® steels, especially for cranes and heavy vehicle trailers, thus allowing a larger payload.

Chemical composition

The chemical properties given are based on cast analysis data.

Coating

Galvanisation: Class 1

Suitability for hot-dip zinc coating is defined as per the requirements of EN ISO 14713-2 Table 1 and NFA 35-503.

Other

Toughness guarantee at -40°C: on request