What is P235GH TC1?
P235GH TC1 steel pipe is a non-alloy steel pipe, mostly used in basic pressure pipelines and boiler systems, belonging to conventional medium and low temperature pressure-bearing scenarios (such as ordinary machining and general engineering pipelines).
What is the difference between P235GH, TC1, and TC2?
| Feature | P235GH TC1 | P235GH TC2 | Main Differences |
|---|---|---|---|
| Heat Treatment | Normalized (N) or normalized and tempered | Must be normalized (N) | TC2 requires normalization, while TC1 allows other treatments like as-rolled (if specified). |
| Impact Testing Requirements | Impact testing not mandatory unless specified by the customer | Mandatory impact testing at a specified temperature (e.g., 0°C, -20°C, or as per agreement) | TC2 has stricter toughness requirements to ensure performance in low-temperature applications. |
| Toughness (Charpy V-notch) | No guaranteed minimum impact energy | Minimum impact energy values required (e.g., 27 J at the specified temperature) | TC2 is designed for colder environments where brittle fracture risk is higher. |
| Applications | General pressure equipment, boilers, and heat exchangers where low-temperature toughness is not critical | Low-temperature services, such as in cold climates, refrigeration systems, or offshore applications | TC2 is preferred when operational temperatures are low or when safety against brittle fracture is critical. |
| Quality Assurance | Basic mechanical and chemical requirements | Enhanced testing for impact properties | TC2 involves additional testing to verify toughness, increasing production costs. |
p235gh tc1 equivalent astm material
In the American Standard (ASA) system, the material equivalent to P235GH TC1 is usually A106 Grade B.
p235gh tc1 chemical composition
| C | Si | Mn | P | S | Cr | Cu | Mo | Nb | Ni | Ti | V | N | Al |
| ≤ 0.16 | ≤0.35 | 0.60-1.20 | ≤0.025 | ≤0.010 | ≤0.30 | ≤0.30 | ≤ 0.08 | ≤ 0.020 | ≤0.30 | ≤0.03 | ≤0.02 | ≤0.012 | ≥0.020 |
p235gh tc1 Mechanical properties:
| Tensile strength | σ B350 ~480 MPa |
| Yield strength | σ S ≥215 MPa |
| Elongation | δ5≥ 25% |
| Impact absorption energy | Akv≥47 J |
| Brinell hardness | ≤105~140 HB100/3000 |
p235gh tc1 Heat treatment:
| Hot working temperature | 1100~850 ℃ |
| Annealing temperature | 890~950 ℃ |
| Normalizing temperature | 520~580 ℃ |
High-Temperature Performance:
Design Operating Temperature: Up to 400°C (long-term) or higher (short-term).
Yield Strength at 100°C: ≥215 MPa.
Yield Strength at 200°C: ≈195 MPa.
Yield Strength at 300°C: ≈175 MPa, maintaining structural integrity.
Creep Resistance: Creep limit ≈110 MPa at 250°C; ≈90 MPa at 300°C, suitable for long-term high-temperature service.
High-Temperature Oxidation Resistance: A stable oxide layer forms below 300°C, reducing maintenance requirements.
P235GH TC1 Hot Rolled Pipe Factory
