AISI 1040

AISI 1040

AISI 1040 carbon steel has high carbon content and can be hardened by heat treatment followed by quenching and tempering to achieve 150 to 250 ksi tensile strength.

Chemical Composition

Element Content(%)
Iron, Fe 98.6-99
Manganese, Mn 0.60-0.90
Carbon, C 0.370-0.440
Sulfur, S ≤ 0.050
Phosphorous, P ≤ 0.040

Mechanical Properties

Properties Metric Imperial
Tensile strength 620 MPa 89900 psi
Yield strength 415 MPa 60200 psi
Bulk modulus (typical for steels) 140 GPa 20300 ksi
Shear modulus (typical for steels) 80 GPa 11600 ksi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break (in 50 mm) 25% 25%
Reduction of area 50% 50%
Hardness, Brinell 201 201
Hardness, Knoop (converted from Brinell hardness) 223 223
Hardness, Rockwell B (converted from Brinell hardness) 93 93
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13 13
Hardness, Vickers (converted from Brinell hardness) 211 211
Izod impact (annealed at 790°C (1450°F)) 45 J 33.2 ft-lb
Izod impact (as rolled) 49 J 36.1 ft-lb
Izod impact (normalized at 900°C (1650°F) 65 J 47.9 ft-lb

Sheets / Plates

Production Route Hot Rolled, Cold Rolled
Material Standard AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry
Size Width from 100mm to 3000mm ; Length from 500mm to 12000mm
Thickness 0.1mm to 400mm
Delivery Condition As Rolled, Annealed, Quenched and Tempered, Normalized
Surface Finish Plain, Brushed, Cladded

AISI 1040 Equivalent Grade / Specifications


ASTM A29(1040)

ASTM A510(1040)

ASTM A513

ASTM A519(1040)

ASTM A546(1040)

ASTM A576(1040)

ASTM A682(1040)

ASTM A827

ASTM A830

MIL S-11310 (CS 1040)

MIL S-16788

MIL S-46070

SAE J1397 (1040)

SAE J403 (1040)

SAE J412(1040)

AISI 1040 Applications


1) Structures in Buildings, bridges, railway stations.

2) Fabrication of pipeline components & Industrial equipment.

3) Construction of automotive bodies, warehouses, shipping containers.

4) Commercial appliances, etc.