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ASTM A1011 High-Strength Low-Alloy, Carbon, Structural Steel Mechanical Strength

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ASTM A1011 Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength

ASTM A1011 specifies hot‑rolled carbon, structural, high‑strength low‑alloy (HSLAS), HSLAS with improved formability, and ultra‑high‑strength steel (UHSS) sheet/strip. It directly adopts general test methods, sampling, retest rules, and dimensional inspection from ASTM A568. Serves as a comprehensive specification for hot-rolled steel sheets and strips. It mandates specific testing protocols to ensure the material's metallurgical integrity, mechanical strength, and formability.

It specifies mandatory tests to verify chemical, mechanical (tension test, bending test) etc., 


ASTM A1011 Steel Mechanical Properties:

Property  Condition/Temper     Test Temperature      Typical Value/Range      Typical Value/Range      Reference Standard for Test Method  
Tensile StrengthHot-RolledRoom Temp310 - 450 MPa45 - 65 ksiASTM E8
Yield Strength (0.2% offset)    Hot-RolledRoom Temp200 - 300 MPa29 - 43 ksiASTM E8
ElongationHot-RolledRoom Temp20 - 30%20 - 30%ASTM E8
Hardness (Brinell)Hot-RolledRoom Temp120 - 160 HB120 - 160 HBASTM E10
Impact StrengthHot-Rolled-20°C (-4°F)27 J20 ft-lbfASTM E23


Test stipulated in the ASTM A1011 details introduction: 

1, Tension Test (Mechanical)

Determines the structural integrity, ductility, and load-bearing capacity of the hot-rolled steel.

Test Methods

According ASTM A370 (Mechanical Testing of Steel Products). Tension Testing to determine Yield Strength, Tensile Strength, and Elongation.

Test Stipulation

Applicable to SS, HSLAS, HSLAS-F, and UHSS grades (Typical properties for CS and DS are non-mandatory but listed in standard).

The material must conform to the mechanical property requirements of standard.

Yield strength can be determined by the 0.2% offset method or the 0.5% extension under load method. 

Test Sample Information

Longitudinal (parallel to rolling direction), full‑thickness strip.

Location: halfway between sheet center and edge.

Sampling: 2 tests per heat / 50 tons; 1 test if <50 tons; test thickest & thinnest if Δt ≥0.050 in. 

Test EquipmentUniversal testing machine (UTM)Electronic Universal Testing Machine

Extensometer (ASTM E83); 

Test Procedure

Prepare burr‑free longitudinal specimens.

Test at room temperature; record yield/tensile/elongation.

Retests allowed for flawed machining, off‑center fracture, or procedural error.

2. Bend Test (Ductility)   Evaluates the material's ability to deform without cracking, which is critical for fabrication processes involving cold bending.
Test MethodCold bending around a fixed cylindrical mandrel. As Per ASTM E290 (Test Methods for Bend Testing of Material for Ductility).
Test Stipulations

For CS and DS grades, the material must be capable of being bent at room temperature in any direction through 180° flat on itself without cracking on the outside of the bent portion. 

Test Sample InformationStrip specimens of a defined width and length, taken parallel or transverse to the rolling direction.
Test Equipment

Universal testing machine (UTM)Electronic Universal Testing Machine with bending test fixtures; 

Bend test machine. 

Test Procedure

Bend slowly to specified angle around mandrel.

Other test: Chemical Composition Analysis. 

Optional test: Hardenss Test. Impact Test. 


ASTM A1011 Main Application Fields: 

ASTM A1011 steel sheet is widely used in:


Automotive: Chassis, frames, structural components, exposed panels.

Construction: Roofing, siding, structural framing, support components.

Furniture & Storage: Shelving, racks, cabinets, appliance housings.

Heavy Equipment: Machinery bases, structural parts, agricultural equipment.

Transportation: Truck bodies, trailers, railcar components.

General Fabrication: Stamped, formed, welded parts for industrial use.

Related products and device

ASTM A1011 High-Strength Low-Alloy Steel Universal Testing Machine

United Test make Universal Testing Machines are known for their long lasting trouble-free performance and highest quality material used in the manufacturing process. The Hydraulic universal testing machine can perform tension, compression, flexure/bending and shearing test for kinds of specimens. Suitable for metal and nonmetal material, such as iron, steel, steel bar, rebar, cement, concrete, rod and so on. Specially design for production, research, student training and industrial laboratory. Available in wide range of loadframe capacities (300kN to 2000kN)/(10Ton to 200Ton) and with combination of control panels (Digital, Computerized) makes United Test product range suitable for every customer requirement.

ASTM A1011 High-Strength Low-Alloy Steel tensile testing machine

WDW Series Computer Control Electronic Universal Testing Machine made by UNITEDTEST range from 100N to 600KN load capacity with various models like single columns, table type, door frame type etc., is used to perform tension, compression, flexure/bending, shearing, peeling etc., test for metal and nonmetal specimens.

ASTM A1011 High-Strength Low-Alloy Steel Bending Testing Machine

Metal Bending & Rebending Testing Machine is used for bending tests of metal materials such as rods, sheets and rebar for construction, and is loaded with two-way hydraulic cylinders, adjusting the roll spacing by hand wheels and being able to lock itself.

ASTM A1011 High-Strength Low-Alloy Steel Bending test fixture for UTM

Metal bending test fixture used measure the ductility of metallic materials, bent the test specimen to a predetermined angle or until the specimen fractures. Conform with ASTM E290, ISO 7438, and JIS Z2248 standard.

Related Standard

ASTM A370 Test method for mechanical testing of steel

ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products


ASTM A370 test methods cover procedures and definitions for the mechanical testing of steels, stainless steels, and related alloys. The various mechanical tests herein described are used to determine properties required in the product specifications. Variations in testing methods are to be avoided, and standard methods of testing are to be followed to obtain reproducible and comparable results. In those cases in which the testing requirements for certain products are unique or at variance with these general procedures, the product specification testing requirements shall control.


Covering tests like Tension, Bend, Hardness, Brinell, Rockwell, Portable, and Impact, each catering to distinct aspects of mechanical property assessment. Moreover, it accommodates annexes for specific product types, including Bar Products, Tubular Products, Fasteners, Round Wire Products, and more, ensuring a holistic approach to testing.


ASTM E290 Metal Bend testing of materials ductility

ASTM E290 Standard Test Methods for Bend Testing of Material for Ductility


ASTM E290 is a destructive mechanical test standard that evaluates the ductility and structural soundness of metallic materials (and welds) by subjecting specimens to controlled bending deformationASTM International. It is a widely used quality control and qualification method for metals, alloys, and welded joints across industries.

ISO 7438 Metallic materials Bending test details

ISO 7438 is a standard that specifies a method for determining the ability of metallic materials to undergo plastic deformation in bending. It is used to evaluate the flexural strength and stiffness of a material , The bend test shall be carried out in testing machines equipped with a bending device with two supports and a former; bending device with a V-block and a former; bending device with a clamp. 

ISO 6892-1 Metallic materials - Tensile testing

ISO 6892 specifies the method for tensile testing of metallic materials and defines the mechanical properties which can be determined at room temperature.  Related standard ASTM E8 , JIS Z2241 Method of tensile test for metallic materials.

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