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Introduction
ASTM
A1011/A1011M is a standard specification that covers hot-rolled steel sheet and
strip supplied in coils and cut lengths. The standard includes multiple steel
categories such as carbon steel, structural steel, high-strength low-alloy
(HSLA) steel, and HSLA steel with improved formability.
Ladhani
Metal Corporation Manufactures, Supplies & Exports ASTM A1011/A1011M steel
sheet and strip.
These steels
are widely used in construction, automotive, fabrication, and industrial manufacturing
due to their balanced strength, ductility, weldability, and cost efficiency.
ASTM A1011/A1011M is specifically designed to provide flexibility in selecting
materials based on forming, strength, and structural requirements.
Applicable Standard
Standard
Specification: ASTM A1011/A1011M
Issuing Organization: ASTM International
Title: Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon,
Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved
Formability
This
specification covers:
- Hot-rolled steel sheet and
strip
- Supplied in coils and cut
lengths
- Structural and HSLA steels with
varying strength levels
It does not apply to materials covered under ASTM
A635/A635M
The standard
provides classification, chemical composition limits, mechanical properties,
and delivery requirements.
Forms of Supply
ASTM
A1011/A1011M steel is supplied in the following forms:
Hot rolled
sheets
Hot rolled strips
Coils
Cut-to-length sheets
Typical supply condition:
As-rolled
(hot rolled)
Pickled and oiled (P&O)
Surface finish:
Mill finish
(black surface)
Pickled surface (cleaned oxide scale)
Oiled surface (corrosion protection)
Typical size range:
Thickness:
approx. 1.2 mm to 25 mm
Width: up to ~2000 mm or more
Length: as per customer requirement
Steel Classifications and Grades (As per Standard)
ASTM
A1011/A1011M classifies steel into the following categories:
Commercial
Steel (CS) – Types A, B, C
Drawing Steel (DS) – Types A, B
Structural Steel (SS) – Grades 30, 33, 36, 40, 45, 50, 55
High-Strength Low-Alloy Steel (HSLAS) – Classes 1 & 2
High-Strength Low-Alloy Steel with Improved Formability (HSLAS-F)
These
classifications define the steel’s strength level, formability, and application
suitability
Grade Description (Technical Explanation)
Hot-Rolled Carbon Steel (CS)
These are
low-carbon steels designed for general fabrication. They offer good weldability
and moderate strength, making them suitable for simple forming and bending
operations.
Drawing Steel (DS)
Drawing
steels are designed for improved ductility and formability. These grades are
suitable for deeper forming operations such as bending, shaping, and light
drawing.
Structural Steel (SS)
Structural
steels are intended for load-bearing applications. These grades offer higher
yield strength and are commonly used in structural components such as beams,
frames, and supports.
High-Strength Low-Alloy Steel
(HSLAS)
HSLA steels
contain small additions of alloying elements such as manganese, niobium,
vanadium, or titanium. These elements improve strength, toughness, and
corrosion resistance without significantly increasing weight.
High-Strength Low-Alloy Steel with
Improved Formability (HSLAS-F)
These steels
are engineered to provide a balance between high strength and enhanced
formability. They are ideal for applications requiring complex shaping without
cracking or loss of mechanical integrity.
Chemical Composition Table (Hot Rolled Steel Sheet
& Strip – SS, HSLAS, HSLAS-F)
|
Designation |
C |
Mn |
P |
S |
Si |
Cu |
Ni |
Cr |
Mo |
V |
Nb |
|
Grade 30 (205) |
0.25 |
0.90 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
|
Grade 33 (230) |
0.25 |
0.90 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
|
Grade 36 (250) Type 1 |
0.25 |
0.90 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
|
Grade 36 (250) Type 2 |
0.25 |
1.35 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
|
Grade 40 (275) |
0.25 |
0.90 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
|
Grade 45 (310) |
0.25 |
1.35 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
|
Grade 50 (340) |
0.25 |
1.35 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
|
Grade 55 (380) |
0.25 |
1.35 |
0.035 |
0.040 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.008 |
0.008 |
HSLAS
(High Strength Low Alloy Steel)
|
Designation |
C |
Mn |
P |
S |
Si |
Cu |
Ni |
Cr |
Mo |
V |
Nb |
|
Grade
45 (310) Class 1 |
0.22 |
1.35 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
45 (310) Class 2 |
0.15 |
1.35 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
50 (340) Class 1 |
0.23 |
1.35 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
50 (340) Class 2 |
0.15 |
1.35 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
55 (380) Class 1 |
0.25 |
1.35 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
55 (380) Class 2 |
0.15 |
1.35 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
60 (410) Class 1 |
0.26 |
1.50 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
60 (410) Class 2 |
0.15 |
1.50 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
65 (450) Class 1 |
0.26 |
1.50 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
65 (450) Class 2 |
0.15 |
1.50 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
70 (480) Class 1 |
0.26 |
1.65 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
|
Grade
70 (480) Class 2 |
0.15 |
1.65 |
0.04 |
0.04 |
— |
0.20 |
0.20 |
0.15 |
0.06 |
0.01
min |
0.005
min |
Key Features of ASTM A1011/A1011M Steel
• Wide range
of grades for different applications
• Excellent weldability across all categories
• Good formability, especially in DS and HSLA-F grades
• High strength-to-weight ratio in HSLA steels
• Suitable for both structural and forming applications
• Available in coils and cut lengths for flexibility
• Cost-effective material for industrial fabrication
Applications of ASTM A1011 Steel Sheet & Strip
Construction Industry
Structural
frames
Brackets and supports
Beams and reinforcements
Automotive Industry
Chassis
components
Reinforcement panels
Formed body parts (HSLA-F grades)
Fabrication Industry
General
fabrication
Machine parts
Formed sheet components
Agricultural Equipment
Frames
Implements
Protective panels
Industrial Equipment
Storage
tanks
Ducting systems
Machinery structures
These steels
are selected based on required strength, forming complexity, and cost
considerations.
Conclusion
ASTM
A1011/A1011M hot-rolled steel sheet and
strip is a versatile specification covering carbon, structural, and HSLA steels
designed for a wide range of industrial applications. With multiple
classifications and strength levels, it provides flexibility for both forming
and structural requirements.
Ladhani
Metal Corporation supplies ASTM A1011/A1011M steel sheet and strip in various
grades, sizes, and supply conditions, ensuring reliable quality and performance
for construction, automotive, and engineering industries.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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@Mumbai @Delhi @Chennai @Kolkata @Hyderabad @Bengaluru
 | Grade 33 (230) | Grade 36 (250) Type 1 | Grade 36 (250) Type 2 | Grade 40 (275) | Grade 45 (310) | Grade 50 (340) | Grade 55 (380)]){kind=link}