HP295 gas cylinder steel chemical composition and performance requirements

The GB6653 standard is the Chinese national standard regarding the steel used for cylinders. HP295 is a gas cylinder steel grade in this standard with specific chemical composition and performance requirements. HP295 gas cylinder steel is usually used to manufacture storage and transportation containers for liquefied petroleum gas or other compressed gases. According to the GB6653 standard, the production, quality control and application of HP295 gas cylinder steel must comply with relevant specifications to ensure that the product meets safety and reliability standards.

The general chemical composition and performance requirements of HP295 gas cylinder steel usually include the following:

Chemical composition of HP295 gas cylinder steel:
- Carbon content (C): ≤0.20%
- Manganese content (Mn): ≥1.00%
- Silicon content (Si): ≥0.35%
- Sulfur content (S): ≤0.015%
- Phosphorus content (P): ≤0.025%
- Aluminum content (Al): ≥0.015%

Performance requirements of HP295 gas cylinder steel:
- Yield strength (σs): ≥295 MPa
- Tensile strength (σb): 440-560 MPa
- Elongation (δ5): ≥26%
- Cold bending performance: cold bending diameter should meet standard requirements

The above are the general chemical composition and performance requirements of HP295 gas cylinder steel under normal circumstances. The specific requirements should be determined according to actual standard specifications or production requirements.

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