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Introduction
ISO 5952 specifies
requirements for hot-rolled steel sheets of structural quality with improved
atmospheric corrosion resistance. These steels are commonly known as weathering
steels and are designed to develop a protective oxide layer when exposed to
atmospheric conditions.
ISO 5952 covers hot-rolled
steel sheet supplied in grades suitable for structural and engineering
applications where improved resistance to atmospheric corrosion is required.
The material is a carbon/low-alloy structural steel rather than stainless
steel.
Ladhani Metal Corporation
supplies ISO 5952 hot-rolled steel sheets in required grades, thicknesses,
widths, lengths and surface conditions.
Applicable Standard
ISO 5952 – Hot-Rolled Steel
Sheet of Structural Quality with Improved Atmospheric Corrosion Resistance.
The standard specifies
requirements relating to chemical composition, mechanical properties,
dimensional tolerances, surface characteristics and testing.
Material Type
ISO 5952 covers:
- Weathering Steel Sheet
- Atmospheric Corrosion Resistant
Steel
- Hot-Rolled Structural Steel Sheet
- Low-Alloy Structural Steel
- Corrosion-Resistant Structural
Steel
- Carbon-Manganese Steel with
Alloying Elements
ISO 5952 material is not stainless
steel. Its improved atmospheric corrosion resistance is obtained through
controlled alloying and formation of a protective surface layer.
Forms of Supply
- Hot-Rolled Steel Sheets
- Weathering Steel Sheets
- Structural Steel Sheets
- Cut-to-Length Sheets
- Flat Sheets
- Plates where dimensions fall within
the applicable standard
- Custom Cut Sheets
Grades Covered
ISO 5952 includes weathering
structural steel grades designated according to the standard's requirements for
chemical composition and mechanical properties.
The applicable grade should
be selected according to the required thickness, strength level and atmospheric
exposure conditions.
Grade Designation
ISO 5952 grades are intended
to provide structural strength together with improved resistance to atmospheric
corrosion.
The designation identifies
the relevant steel grade and its specified mechanical properties. Grade
selection depends on the required yield strength, tensile strength, thickness
and service environment.
Chemical Composition
The chemical composition of
ISO 5952 weathering steels is controlled to provide improved atmospheric
corrosion resistance.
|
Grade |
Class |
C max. |
Mn |
Si |
P |
S max. |
Cu |
Ni |
Cr |
Mo |
Zr |
|
HSA 235W |
B |
0.13 |
0.20 to 0.60 |
0.10 to 0.40 |
0.040 max. |
0.035 |
0.25 to 0.55 |
0.65 max. |
0.40 to 0.80 |
c |
c |
|
HSA 235W |
D |
0.13 |
0.20 to 0.60 |
0.10 to 0.40 |
0.040 max. |
0.035 |
0.25 to 0.55 |
0.65 max. |
0.40 to 0.80 |
c |
c |
|
HSA 245W |
B |
0.18 |
1.25 max. |
0.15 to 0.65 |
0.035 max. |
0.035 |
0.30 to 0.50 |
0.05 to 0.30 |
0.45 to 0.75 |
c |
c |
|
HSA 245W |
D |
0.18 |
1.25 max. |
0.15 to 0.65 |
0.035 max. |
0.035 |
0.30 to 0.50 |
0.05 to 0.30 |
0.45 to 0.75 |
c |
c |
|
HSA 355W1 |
A |
0.12 |
1.00 max. |
0.20 to 0.75 |
0.06 to 0.15 |
0.035 |
0.25 to 0.55 |
0.65 max. |
0.30 to 1.25 |
c |
c |
|
HSA 355W1 |
D |
0.12 |
1.00 max. |
0.20 to 0.75 |
0.06 to 0.15 |
0.035 |
0.25 to 0.55 |
0.65 max. |
0.30 to 1.25 |
c |
c |
|
HSA 355W2 |
C |
0.16 |
0.50 to 1.50 |
0.50 max. |
0.035 max. |
0.035 |
0.25 to 0.55 |
0.65 max. |
0.40 to 0.80 |
0.30 max. |
0.15 max. |
|
HSA 355W2 |
D |
0.16 |
0.50 to 1.50 |
0.50 max. |
0.035 max. |
0.035 |
0.25 to 0.55 |
0.65 max. |
0.40 to 0.80 |
0.30 max. |
0.15 max. |
|
HSA 365W |
B |
0.18 |
1.40 max. |
0.15 to 0.65 |
0.035 max. |
0.035 |
0.30 to 0.50 |
0.05 to 0.30 |
0.45 to 0.75 |
c |
c |
|
HSA 365W |
D |
0.18 |
1.40 max. |
0.15 to 0.65 |
0.035 max. |
0.035 |
0.30 to 0.50 |
0.05 to 0.30 |
0.45 to 0.75 |
c |
c |
Delivery Conditions
ISO 5952 hot-rolled sheets
can be supplied in suitable hot-rolled delivery conditions.
- As-Rolled
- Hot-Rolled
- Normalized or Normalized-Rolled
where specified
- Cut-to-Length
- Surface Condition as agreed
The required delivery
condition should be specified when placing the order.
Surface Finish
ISO 5952 sheets have a
hot-rolled surface suitable for structural applications.
Available surface conditions
can include:
- Hot-Rolled Surface
- Mill Surface
- Descaled Surface
- Pickled Surface where specified
- Shot-Blasted Surface where
specified
Weathering steel develops a
protective patina progressively under suitable atmospheric exposure.
Dimensional Accuracy
ISO 5952 sheets are supplied
with controlled:
- Thickness
- Width
- Length
- Flatness
- Straightness
- Edge Condition
- Surface Quality
Standard dimensional tolerances
apply according to the applicable requirements, while special tolerances can be
agreed where permitted.
Standard Sizes
ISO 5952 hot-rolled steel
sheets can be supplied in various thicknesses, widths and lengths.
- Thickness: According to standard
and grade
- Width: Standard or custom
- Length: Fixed or cut-to-length
- Edge: Mill edge or trimmed edge
where specified
- Custom Dimensions: Available by
agreement
Key Features
- Improved atmospheric corrosion
resistance
- Weathering steel characteristics
- Hot-rolled construction
- Good structural strength
- Good outdoor durability
- Reduced dependence on protective
coatings in suitable environments
- Suitable for structural fabrication
- Good weldability in appropriate
grades and thicknesses
- Available in various dimensions
Applications
Structural Engineering
- Bridges
- Building Structures
- Structural Frames
- Towers
- Industrial Structures
- Support Structures
Transportation Infrastructure
- Railway Structures
- Railway Bridges
- Highway Structures
- Roadside Structures
- Transport Infrastructure
Architectural Applications
- Building Facades
- Exterior Cladding
- Architectural Structures
- Sculptural Structures
- Outdoor Architectural Components
Industrial Applications
- Storage Structures
- Equipment Supports
- Industrial Frames
- Outdoor Machinery Structures
- General Fabricated Components
Fabrication and Machining
ISO 5952 hot-rolled
weathering steel sheets can generally be cut, drilled, formed, welded and
fabricated using appropriate procedures.
Welding procedures should
take account of the steel grade, sheet thickness, carbon equivalent and
required service conditions. Suitable consumables and preheating requirements
should be established according to the welding procedure.
Heat Treatment
ISO 5952 hot-rolled
weathering steel is supplied primarily for structural applications rather than
as a heat-treatment steel.
Depending on the specified
grade and delivery condition, products may be supplied:
- As-Rolled
- Normalized
- Normalized-Rolled
Any subsequent heat treatment
should be evaluated carefully because it can affect the mechanical properties
and corrosion behaviour of the material.
Advantages
- Improved resistance to atmospheric
corrosion
- Suitable for outdoor structural
applications
- Good structural strength
- Reduced maintenance requirements in
suitable environments
- Weather-resistant characteristics
- Good weldability in appropriate
grades
- Suitable for architectural
applications
- Suitable for bridges and
infrastructure
- Hot-rolled manufacturing route
- Available in various sizes
Conclusion
ISO 5952 hot-rolled steel
sheet is a structural weathering steel designed to provide improved atmospheric
corrosion resistance together with suitable strength and fabrication
characteristics. It is used for bridges, structural frameworks, transportation
infrastructure, architectural structures and outdoor fabricated components.
Ladhani Metal Corporation
supplies ISO 5952 hot-rolled steel sheets in required grades, thicknesses,
widths, lengths and surface conditions, with mill test certificates and
inspection documentation as required.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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