AISI 1040
UNS G10400
Description
AISI 1040 steel (specifically, it is equivalent to EN8/080M40) is medium carbon steel with medium-strength, adequate tensile strength and good hardness. The hardness can be further improved by heat treatment. It is also ductile and easily machined. It can be machined using all the conventional methods like turning, drilling, tapping, etc. AISI 1040 possesses good resistant to chemicals and humid environments, as well as has excellent heat resistance, which makes it an excellent choice for a variety of applications including high-temperature and cryogenic storage tanks, farm equipment, ships, bridges and naval applications.
Chemical Component
| Fe | Mn | C | S | P |
|---|---|---|---|---|
| 98.6-99% | 0.60-0.90% | 0.370-0.440% | <0.050% | <0.040% |
Basic Information
| Item | AISI 1040 |
|---|---|
| Catalog | ACMA-Fe-A059 |
Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength | 620 MPa | 89900 psi |
| Yield Strength | 415 MPa | 60200 psi |
| Bulk Modulus (Typical for Steel) | 140 GPa | 20300 ksi |
| Shear Modulus (Typical for Steel) | 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 |
| lzod impact (annealed at 790 °C (1450 °F)) | 45 J | 33.2 ft-lb |
| lzod impact (as rolled) | 49 J | 36.1 ft-lb |
| lzod impact (normalized at 900 °C(1650 °F) | 65 J | 47.9 ft-lb |
Material Forms
Sheet & Plate
| Production Route | Hot rolled, cold rolled |
| Material Standard | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry |
| Size | Width from 100 mm to 3000 mm; Length from 500 mm to 12000 mm |
| Thickness | 0.1 mm to 400 mm |
| Delivery Condition | As rolled, annealed, quenched and tempered, normalized |
| Surface Finish | Plain, brushed, cladded |
Equivalent Grade / Specifications
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Applications
- Structures in buildings, bridges, railway stations
- Fabrication of pipeline components & industrial equipment
- Construction of automotive bodies, warehouses, shipping containers
- Commercial appliances, etc.
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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