STHA 20
Korea KS STHA 20 Boiler steel grade and alloy steel tubes for heat exchanger and STHA 20 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
KS STHA 20 KS STHA 20 Datasheet
| Category | Type | Steel Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Structure Steel | STHA 20 | KS | Korea | Boiler steel grade and alloy steel tubes for heat exchanger |
| SEV 245/SEV 25 |
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| SEV 295/SEV 30 |
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| SEV 345/SEV 35 |
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| SBB 410/SBB 42 |
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| SBB 450/SBB 46 |
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| SBB 450M/SBB 46M |
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| SBB 480/SBB 49 |
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| SBB 480M/SBB 49M |
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| STHA 12 |
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| STHA 13 |
Datasheet for:Steel Grades:Structure Steel:STHA 20
Chemical composition(mass fraction)(wt.%) of the STHA 20
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) |
|---|---|---|---|---|---|---|
| 0.10-0.20 | 0.10-0.50 | 0.30-0.60 | 0.035 | 0.035 | 0.50-0.80 | 0.45-0.65 |
Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade STHA 20
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 184 (≥) | 149 (≥) | 13 | 44 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 334 |
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson’s coefficient, ν |
|---|---|---|---|---|---|---|---|
| 43 | - | - | 0.23 | - | |||
| 933 | 347 | - | 32.3 | 324 | - | ||
| 678 | - | 14 | 12.2 | 234 | 122 |
Heat treated : 1859°C - 1546°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
| Grade | Standard | Country | Application |
|---|---|---|---|
| STHA 20 | KS | Korea |
Boiler steel grade and alloy steel tubes for heat exchanger
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