DIN 488-1 BSt 420 S Cold-Formed Ribbed Reinforcing Steel – Grade B
BSt 420 S (short: IIIS) is a ribbed concrete-reinforcing steel of medium strength (YS: 420 N/mm²) for single rod reinforcing. The weldability is given for the methods metal-arc welding, metal-arc active gas welding, pressure gas welding, flash welding and resistance spot welding. For high corrosive loads the application of the stainless ribbed reinforcing steel X 6 CrNiMoTi 17 12 2, mat. no. 1.4571, is recommended. Properties acc. DIN 17440.
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 A10 | 20.0 °C | 10 % | |
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 | 20.0 °C | 500 MPa | |
Yield strength | 20.0 °C | 420 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 | 0.22 % |
Nitrogen | 0.01 % |
Phosphorus | 0.05 % |
Sulfur | 0.05 % |
Metal
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