ASTM A709 Grade 345 Type 1 – High Strength Low‑Carbon Steel
Properties
General
| Property | Temperature | Value | Comment |
|---|---|---|---|
Density | 23.0 °C | 7.8 - 7.9 g/cm³ | Typical for Low Carbon Steel |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 200 - 215 GPa | Typical for Low Carbon Steel |
Elongation A50 | 23.0 °C | 21 % | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Low Carbon Steel |
Shear modulus | 23.0 °C | 82 GPa | Typical for Low Carbon Steel |
Tensile strength | 23.0 °C | 450 MPa | |
Yield strength Rp0.2 | 23.0 °C | 345 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.32E-5 - 1.38E-5 1/K | Typical for Low Carbon Steel |
Max service temperature | 500 °C | Typical for Carbon Steel | |
Melting point | 1480 - 1526 °C | Typical for Low Carbon Steel | |
Specific heat capacity | 23.0 °C | 465 J/(kg·K) | Typical for Low Carbon Steel |
Thermal conductivity | 23.0 °C | 25 - 93 W/(m·K) | Typical for Low Carbon Steel |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 23.0 °C | 1.43E-7 - 1.74E-7 Ω·m | Typical for Carbon Steel |
Magnetic
| Property | Value | Comment |
|---|---|---|
Curie temperature | 770 °C | Typical for Low Carbon Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.23 % |
Manganese | 1.35 % |
Niobium | 0.01 - 0.05 % |
Phosphorus | 0.03 % |
Silicon | 0.4 % |
Sulfur | 0.03 % |
Metal
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- ASTM A709 Grade 345S Low‑Carbon Steel – Key Properties & Performance
- ASTM A709 QST 345 Heat‑Treated Steel: Technical Specifications & Performance
- ASTM A656 Grade 345 Type 7 – As-Rolled Low‑Carbon Steel
- ASTM A656 Grade 345 Type 8 – Premium As‑Rolled Steel for Structural Use
- ASTM A709 Grade 345 Type 2 Steel: Properties & Specifications
- ASTM A656 Grade 345 Type 3 As-Rolled Steel – Premium Low‑Carbon Structural Material